首页 > 最新文献

Rapid Prototyping Journal最新文献

英文 中文
Correlation between the part quality, strength and surface roughness of material extrusion process 材料挤压工艺的零件质量、强度和表面粗糙度之间的相关性
IF 3.9 4区 工程技术 Q1 ENGINEERING, MECHANICAL Pub Date : 2024-01-11 DOI: 10.1108/rpj-10-2023-0347
Abdul Samad Rafique, Adnan Munir, Numan Ghazali, Muhammad Naveed Ahsan, Aqeel Ahsan Khurram
PurposeThe purpose of this study was to develop a correlation between the properties of acrylonitrile butadiene styrene parts 3D printed by material extrusion (MEX) process.Design/methodology/approachThe two MEX parameters and their values have been selected by design of experiment method. Three properties of MEX parts, i.e. strength (tensile and three-point bending), surface roughness and the dimensional accuracy, are studied at different build speeds (35 mm/s, 45 mm/s and 55 mm/s) and the layer heights (0.06 mm, 0.10 mm and 0.15 mm).FindingsThe results show that tensile strength and three-point bending strength both increase with the decrease in build speed and the layer height. The artifact selected for dimensional accuracy test shows higher accuracy of the features when 3D printed with 0.06 mm layer height at 35 mm/s build speed as compared to those of higher layer heights and build speeds. The optical images of the 3D-printed specimen reveal that lower build speed and the layer height promote higher inter-layer diffusion that has the effect of strong bonding between the layers and, as a result, higher strength of the specimen. The surface roughness values also have direct relation with the build speed and the layer height.Originality/valueThe whole experiments demonstrate that the part quality, surface roughness and the mechanical strength are correlated and depend on the build speed and the layer height.
设计/方法/途径通过实验设计法选择了两个 MEX 参数及其值。研究结果表明,拉伸强度和三点弯曲强度均随构建速度和层高的降低而增加。与更高的层高和构建速度相比,以 35 mm/s 的构建速度、0.06 mm 的层高进行三维打印时,选作尺寸精度测试的工件显示出更高的特征精度。三维打印试样的光学图像显示,较低的构建速度和层高可促进较高的层间扩散,从而使层间产生较强的结合力,进而提高试样的强度。整个实验表明,零件质量、表面粗糙度和机械强度与构建速度和层高相关,并取决于构建速度和层高。
{"title":"Correlation between the part quality, strength and surface roughness of material extrusion process","authors":"Abdul Samad Rafique, Adnan Munir, Numan Ghazali, Muhammad Naveed Ahsan, Aqeel Ahsan Khurram","doi":"10.1108/rpj-10-2023-0347","DOIUrl":"https://doi.org/10.1108/rpj-10-2023-0347","url":null,"abstract":"\u0000Purpose\u0000The purpose of this study was to develop a correlation between the properties of acrylonitrile butadiene styrene parts 3D printed by material extrusion (MEX) process.\u0000\u0000\u0000Design/methodology/approach\u0000The two MEX parameters and their values have been selected by design of experiment method. Three properties of MEX parts, i.e. strength (tensile and three-point bending), surface roughness and the dimensional accuracy, are studied at different build speeds (35 mm/s, 45 mm/s and 55 mm/s) and the layer heights (0.06 mm, 0.10 mm and 0.15 mm).\u0000\u0000\u0000Findings\u0000The results show that tensile strength and three-point bending strength both increase with the decrease in build speed and the layer height. The artifact selected for dimensional accuracy test shows higher accuracy of the features when 3D printed with 0.06 mm layer height at 35 mm/s build speed as compared to those of higher layer heights and build speeds. The optical images of the 3D-printed specimen reveal that lower build speed and the layer height promote higher inter-layer diffusion that has the effect of strong bonding between the layers and, as a result, higher strength of the specimen. The surface roughness values also have direct relation with the build speed and the layer height.\u0000\u0000\u0000Originality/value\u0000The whole experiments demonstrate that the part quality, surface roughness and the mechanical strength are correlated and depend on the build speed and the layer height.\u0000","PeriodicalId":20981,"journal":{"name":"Rapid Prototyping Journal","volume":"10 1","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-01-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139438960","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
An investigation into the mechanisms that influence laser sintered polyamide-12 top surfaces 激光烧结聚酰胺-12 表面的影响机理研究
IF 3.9 4区 工程技术 Q1 ENGINEERING, MECHANICAL Pub Date : 2024-01-09 DOI: 10.1108/rpj-09-2023-0317
James Tarver, Kieran Nar, Candice Majewski
PurposeThe purpose of this paper is to elucidate the extent to which the mechanisms of polymer melt viscous flow and finish layer powder particle adhesion influence the top surface topographies of laser sintered polyamide (PA12) components.Design/methodology/approachLaser sintered specimens were manufactured at varying laser parameters in accordance with a full factorial design of experiments. Focus variation microscopy was used to ascertain insight into their top surface heights and peak/valley distributions. Subsequently, regression expressions were generated to model the former with respect to applied laser parameters. Auxiliary experimental analysis was also performed to validate the proposed mechanisms and statistical models.FindingsWithin the parameter range tested, this work found the root mean square (Sq) and skewness (Ssk) roughness responses of laser sintered PA12 top surfaces to be inversely related to one another, and both also principally influenced by beam spacing. Furthermore, it was demonstrated that using optimised laser parameters (to promote polymer melt dispersion) and building without finish layers (to avert subsequent powder particle adhesion) reduced the mean Sq roughness of resultant topographies by 30.8% and 47.9% relative to standard laser sintered PA12 top surfaces, respectively.Practical implicationsThe scope to which laser sintered PA12 top surfaces can be modified was highlighted.Originality/valueThis research demonstrated the impact the mechanisms of polymer melt viscous flow and finish layer powder particle adhesion have on laser sintered PA12 top surfaces.
本文旨在阐明聚合物熔体粘性流动和饰面层粉末颗粒粘附机制对激光烧结聚酰胺 (PA12) 部件顶面形貌的影响程度。使用聚焦变化显微镜深入了解其顶面高度和峰谷分布。随后,生成了前者与应用激光参数相关的回归表达式模型。在测试的参数范围内,这项研究发现激光烧结 PA12 顶表面的均方根(Sq)和偏斜度(Ssk)粗糙度响应彼此成反比关系,并且都主要受光束间距的影响。此外,研究还表明,与标准激光烧结 PA12 顶面相比,使用优化的激光参数(以促进聚合物熔体分散)和不使用饰面层(以避免随后的粉末颗粒粘附),可使所得拓扑图的平均 Sq 粗糙度分别降低 30.8% 和 47.9%。原创性/价值这项研究表明了聚合物熔体粘性流动和饰面层粉末颗粒粘附机制对激光烧结 PA12 顶面的影响。
{"title":"An investigation into the mechanisms that influence laser sintered polyamide-12 top surfaces","authors":"James Tarver, Kieran Nar, Candice Majewski","doi":"10.1108/rpj-09-2023-0317","DOIUrl":"https://doi.org/10.1108/rpj-09-2023-0317","url":null,"abstract":"\u0000Purpose\u0000The purpose of this paper is to elucidate the extent to which the mechanisms of polymer melt viscous flow and finish layer powder particle adhesion influence the top surface topographies of laser sintered polyamide (PA12) components.\u0000\u0000\u0000Design/methodology/approach\u0000Laser sintered specimens were manufactured at varying laser parameters in accordance with a full factorial design of experiments. Focus variation microscopy was used to ascertain insight into their top surface heights and peak/valley distributions. Subsequently, regression expressions were generated to model the former with respect to applied laser parameters. Auxiliary experimental analysis was also performed to validate the proposed mechanisms and statistical models.\u0000\u0000\u0000Findings\u0000Within the parameter range tested, this work found the root mean square (Sq) and skewness (Ssk) roughness responses of laser sintered PA12 top surfaces to be inversely related to one another, and both also principally influenced by beam spacing. Furthermore, it was demonstrated that using optimised laser parameters (to promote polymer melt dispersion) and building without finish layers (to avert subsequent powder particle adhesion) reduced the mean Sq roughness of resultant topographies by 30.8% and 47.9% relative to standard laser sintered PA12 top surfaces, respectively.\u0000\u0000\u0000Practical implications\u0000The scope to which laser sintered PA12 top surfaces can be modified was highlighted.\u0000\u0000\u0000Originality/value\u0000This research demonstrated the impact the mechanisms of polymer melt viscous flow and finish layer powder particle adhesion have on laser sintered PA12 top surfaces.\u0000","PeriodicalId":20981,"journal":{"name":"Rapid Prototyping Journal","volume":"38 19","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139442897","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimental and numerical study of in-plane uniaxial compression response of PU foam filled aluminum arrowhead auxetic honeycomb 聚氨酯泡沫填充铝箭头辅助蜂窝材料平面单轴压缩响应的实验和数值研究
IF 3.9 4区 工程技术 Q1 ENGINEERING, MECHANICAL Pub Date : 2024-01-09 DOI: 10.1108/rpj-08-2023-0267
Chunfu Wu, Guorui Ye, Yonghong Zhao, Baowen Ye, Tao Wang, Liangmo Wang, Zeming Zhang
PurposeAuxetics metamaterials show high performance in their specific characteristics, while the absolute stiffness and strength are much weaker due to substantial porosity. This paper aims to propose a novel auxetic honeycomb structure manufactured using selective laser melting and study the enhanced mechanical performance when subjected to in-plane compression loading.Design/methodology/approachA novel composite structure was designed and fabricated on the basis of an arrowhead auxetic honeycomb and filled with polyurethane foam. The deformation mechanism and mechanical responses of the structure with different structural parameters were investigated experimentally and numerically. With the verified simulation models, the effects of parameters on compression strength and energy absorption characteristics were further discussed through parametric analysis.FindingsA good agreement was achieved between the experimental and simulation results, showing an evidently enhanced compression strength and energy absorption capacity. The interaction between the auxetic honeycomb and foam reveals to exploit a reinforcement effect on the compression performance. The parametric analysis indicates that the composite with smaller included angel and higher foam density exhibits higher plateau stress and better specific energy absorption, while increasing strut thickness is undesirable for high energy absorption efficiency.Originality/valueThe results of this study served to demonstrate an enhanced mechanical performance for the foam filled auxetic honeycomb, which is expected to be exploited with applications in aerospace, automobile, civil engineering and protective devices. The findings of this study can provide numerical and experimental references for the design of structural parameters.
目的 辅助超材料在其特定特性方面表现出很高的性能,但由于存在大量孔隙,其绝对刚度和强度要弱得多。本文旨在提出一种利用选择性激光熔融技术制造的新型辅助蜂窝结构,并研究其在承受平面压缩载荷时的增强机械性能。设计/方法/途径在箭头辅助蜂窝的基础上设计并制造了一种新型复合结构,并填充了聚氨酯泡沫。实验和数值研究了该结构在不同结构参数下的变形机理和机械响应。实验结果和模拟结果之间取得了良好的一致,显示出压缩强度和能量吸收能力的明显增强。辅助蜂窝和泡沫之间的相互作用显示出对压缩性能的增强作用。参数分析表明,含有较小的天使和较高泡沫密度的复合材料具有较高的高原应力和较好的比能量吸收能力,而增加支柱厚度则不利于提高能量吸收效率。研究结果可为结构参数设计提供数值和实验参考。
{"title":"Experimental and numerical study of in-plane uniaxial compression response of PU foam filled aluminum arrowhead auxetic honeycomb","authors":"Chunfu Wu, Guorui Ye, Yonghong Zhao, Baowen Ye, Tao Wang, Liangmo Wang, Zeming Zhang","doi":"10.1108/rpj-08-2023-0267","DOIUrl":"https://doi.org/10.1108/rpj-08-2023-0267","url":null,"abstract":"\u0000Purpose\u0000Auxetics metamaterials show high performance in their specific characteristics, while the absolute stiffness and strength are much weaker due to substantial porosity. This paper aims to propose a novel auxetic honeycomb structure manufactured using selective laser melting and study the enhanced mechanical performance when subjected to in-plane compression loading.\u0000\u0000\u0000Design/methodology/approach\u0000A novel composite structure was designed and fabricated on the basis of an arrowhead auxetic honeycomb and filled with polyurethane foam. The deformation mechanism and mechanical responses of the structure with different structural parameters were investigated experimentally and numerically. With the verified simulation models, the effects of parameters on compression strength and energy absorption characteristics were further discussed through parametric analysis.\u0000\u0000\u0000Findings\u0000A good agreement was achieved between the experimental and simulation results, showing an evidently enhanced compression strength and energy absorption capacity. The interaction between the auxetic honeycomb and foam reveals to exploit a reinforcement effect on the compression performance. The parametric analysis indicates that the composite with smaller included angel and higher foam density exhibits higher plateau stress and better specific energy absorption, while increasing strut thickness is undesirable for high energy absorption efficiency.\u0000\u0000\u0000Originality/value\u0000The results of this study served to demonstrate an enhanced mechanical performance for the foam filled auxetic honeycomb, which is expected to be exploited with applications in aerospace, automobile, civil engineering and protective devices. The findings of this study can provide numerical and experimental references for the design of structural parameters.\u0000","PeriodicalId":20981,"journal":{"name":"Rapid Prototyping Journal","volume":"4 5","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-01-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139443599","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Manufacture of thermoplastic molds by fused filament fabrication 3D printing for rapid prototyping of polyurethane foam molded products 通过熔融长丝制造 3D打印技术制造热塑性模具,用于聚氨酯泡沫塑料成型产品的快速原型制作
IF 3.9 4区 工程技术 Q1 ENGINEERING, MECHANICAL Pub Date : 2024-01-02 DOI: 10.1108/rpj-03-2023-0085
G. Guerrero-Vacas, Jaime Gómez-Castillo, Ó. Rodríguez-Alabanda
Purpose Polyurethane (PUR) foam parts are traditionally manufactured using metallic molds, an unsuitable approach for prototyping purposes. Thus, rapid tooling of disposable molds using fused filament fabrication (FFF) with polylactic acid (PLA) and glycol-modified polyethylene terephthalate (PETG) is proposed as an economical, simpler and faster solution compared to traditional metallic molds or three-dimensional (3D) printing with other difficult-to-print thermoplastics, which are prone to shrinkage and delamination (acrylonitrile butadiene styrene, polypropilene-PP) or high-cost due to both material and printing equipment expenses (PEEK, polyamides or polycarbonate-PC). The purpose of this study has been to evaluate the ease of release of PUR foam on these materials in combination with release agents to facilitate the mulding/demoulding process. Design/methodology/approach PETG, PLA and hardenable polylactic acid (PLA 3D870) have been evaluated as mold materials in combination with aqueous and solvent-based release agents within a full design of experiments by three consecutive molding/demolding cycles. Findings PLA 3D870 has shown the best demoldability. A mold expressly designed to manufacture a foam cushion has been printed and the prototyping has been successfully achieved. The demolding of the part has been easier using a solvent-based release agent, meanwhile the quality has been better when using a water-based one. Originality/value The combination of PLA 3D870 and FFF, along with solvent-free water-based release agents, presents a compelling low-cost and eco-friendly alternative to traditional metallic molds and other 3D printing thermoplastics. This innovative approach serves as a viable option for rapid tooling in PUR foam molding.
目的 聚氨酯(PUR)泡沫塑料部件传统上使用金属模具制造,这种方法不适合原型设计目的。因此,建议使用聚乳酸(PLA)和乙二醇改性聚对苯二甲酸乙二酯(PETG)熔融长丝制造(FFF)快速制造一次性模具,与传统的金属模具或使用其他难以打印的热塑性塑料进行三维(3D)打印相比,这是一种经济、简单、快速的解决方案、这些热塑性塑料容易收缩和分层(丙烯腈-丁二烯-苯乙烯、聚丙烯-聚苯乙烯),或因材料和打印设备费用而成本高昂(PEEK、聚酰胺或聚碳酸酯-PC)。本研究的目的是评估聚氨酯泡沫与脱模剂结合后在这些材料上的脱模难易程度,以促进混料/脱模过程。 通过三个连续的成型/脱模循环,对 PETG、聚乳酸和可硬化聚乳酸(聚乳酸 3D870)作为模具材料与水基和溶剂型脱模剂的组合进行了全面的实验设计评估。 结果表明,聚乳酸 3D870 的脱模性最好。已打印出专门用于制造泡沫垫的模具,并成功实现了原型制作。使用溶剂型脱模剂更容易脱模,而使用水基脱模剂则质量更好。 独创性/价值 聚乳酸 3D870 和 FFF 与无溶剂水基脱模剂的结合,为传统金属模具和其他 3D 打印热塑性塑料提供了一种令人信服的低成本、环保型替代方案。这种创新方法是 PUR 泡沫成型中快速模具的可行选择。
{"title":"Manufacture of thermoplastic molds by fused filament fabrication 3D printing for rapid prototyping of polyurethane foam molded products","authors":"G. Guerrero-Vacas, Jaime Gómez-Castillo, Ó. Rodríguez-Alabanda","doi":"10.1108/rpj-03-2023-0085","DOIUrl":"https://doi.org/10.1108/rpj-03-2023-0085","url":null,"abstract":"Purpose Polyurethane (PUR) foam parts are traditionally manufactured using metallic molds, an unsuitable approach for prototyping purposes. Thus, rapid tooling of disposable molds using fused filament fabrication (FFF) with polylactic acid (PLA) and glycol-modified polyethylene terephthalate (PETG) is proposed as an economical, simpler and faster solution compared to traditional metallic molds or three-dimensional (3D) printing with other difficult-to-print thermoplastics, which are prone to shrinkage and delamination (acrylonitrile butadiene styrene, polypropilene-PP) or high-cost due to both material and printing equipment expenses (PEEK, polyamides or polycarbonate-PC). The purpose of this study has been to evaluate the ease of release of PUR foam on these materials in combination with release agents to facilitate the mulding/demoulding process. Design/methodology/approach PETG, PLA and hardenable polylactic acid (PLA 3D870) have been evaluated as mold materials in combination with aqueous and solvent-based release agents within a full design of experiments by three consecutive molding/demolding cycles. Findings PLA 3D870 has shown the best demoldability. A mold expressly designed to manufacture a foam cushion has been printed and the prototyping has been successfully achieved. The demolding of the part has been easier using a solvent-based release agent, meanwhile the quality has been better when using a water-based one. Originality/value The combination of PLA 3D870 and FFF, along with solvent-free water-based release agents, presents a compelling low-cost and eco-friendly alternative to traditional metallic molds and other 3D printing thermoplastics. This innovative approach serves as a viable option for rapid tooling in PUR foam molding.","PeriodicalId":20981,"journal":{"name":"Rapid Prototyping Journal","volume":"10 9","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139124803","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
A layerwise geometric error compensation procedure for additive manufacturing 用于增材制造的分层几何误差补偿程序
IF 3.9 4区 工程技术 Q1 ENGINEERING, MECHANICAL Pub Date : 2024-01-02 DOI: 10.1108/rpj-04-2023-0144
Fernando Peña, J. C. Rico, P. Zapico, G. Valiño, Sabino Mateos
PurposeThe purpose of this paper is to provide a new procedure for in-plane compensation of geometric errors that often appear in the layers deposited by an additive manufacturing (AM) process when building a part, regardless of the complexity of the layer geometry.Design/methodology/approachThe procedure is based on comparing the real layer contours to the nominal ones extracted from the STL model of the part. Considering alignment and form deviations, the compensation algorithm generates new compensated contours that match the nominal ones as closely as possible. To assess the compensation effectiveness, two case studies were analysed. In the first case, the parts were not manufactured, but the distortions were simulated using a predictive model. In the second example, the test part was actually manufactured, and the distortions were measured on a coordinate measuring machine.FindingsThe geometric deviations detected in both case studies, as evaluated by various quality indicators, reduced significantly after applying the compensation procedure, meaning that the compensated and nominal contours were better matched both in shape and size.Research limitations/implicationsAlthough large contours showed deviations close to zero, dimensional overcompensation was observed when applied to small contours. The compensation procedure could be enhanced if the applied compensation factor took into account the contour size of the analysed layer and other geometric parameters that could have an influence.Originality/valueThe presented method of compensation is applicable to layers of any shape obtained in any AM process.
本文的目的是提供一种新的平面内补偿几何误差的程序,这种误差通常出现在增材制造(AM)工艺制造零件时沉积的层中,而与层几何形状的复杂程度无关。考虑到对齐和形状偏差,补偿算法生成新的补偿轮廓,尽可能与标称轮廓相匹配。为了评估补偿效果,我们对两个案例进行了分析。在第一个案例中,零件没有制造出来,但使用预测模型模拟了变形。研究限制/启示虽然大轮廓显示的偏差接近零,但在应用于小轮廓时,发现了尺寸过度补偿。如果应用的补偿因子考虑到被分析层的轮廓尺寸和其他可能产生影响的几何参数,则补偿程序可以得到改进。
{"title":"A layerwise geometric error compensation procedure for additive manufacturing","authors":"Fernando Peña, J. C. Rico, P. Zapico, G. Valiño, Sabino Mateos","doi":"10.1108/rpj-04-2023-0144","DOIUrl":"https://doi.org/10.1108/rpj-04-2023-0144","url":null,"abstract":"\u0000Purpose\u0000The purpose of this paper is to provide a new procedure for in-plane compensation of geometric errors that often appear in the layers deposited by an additive manufacturing (AM) process when building a part, regardless of the complexity of the layer geometry.\u0000\u0000\u0000Design/methodology/approach\u0000The procedure is based on comparing the real layer contours to the nominal ones extracted from the STL model of the part. Considering alignment and form deviations, the compensation algorithm generates new compensated contours that match the nominal ones as closely as possible. To assess the compensation effectiveness, two case studies were analysed. In the first case, the parts were not manufactured, but the distortions were simulated using a predictive model. In the second example, the test part was actually manufactured, and the distortions were measured on a coordinate measuring machine.\u0000\u0000\u0000Findings\u0000The geometric deviations detected in both case studies, as evaluated by various quality indicators, reduced significantly after applying the compensation procedure, meaning that the compensated and nominal contours were better matched both in shape and size.\u0000\u0000\u0000Research limitations/implications\u0000Although large contours showed deviations close to zero, dimensional overcompensation was observed when applied to small contours. The compensation procedure could be enhanced if the applied compensation factor took into account the contour size of the analysed layer and other geometric parameters that could have an influence.\u0000\u0000\u0000Originality/value\u0000The presented method of compensation is applicable to layers of any shape obtained in any AM process.\u0000","PeriodicalId":20981,"journal":{"name":"Rapid Prototyping Journal","volume":"63 9","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139452484","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Machine learning for forecasting the biomechanical behavior of orthopedic bone plates fabricated by fused deposition modeling 利用机器学习预测通过熔融沉积模型制造的矫形骨板的生物力学行为
IF 3.9 4区 工程技术 Q1 ENGINEERING, MECHANICAL Pub Date : 2024-01-01 DOI: 10.1108/rpj-02-2023-0042
Shrutika Sharma, Vishal Gupta, D. Mudgal, Vishal Srivastava
Purpose Three-dimensional (3D) printing is highly dependent on printing process parameters for achieving high mechanical strength. It is a time-consuming and expensive operation to experiment with different printing settings. The current study aims to propose a regression-based machine learning model to predict the mechanical behavior of ulna bone plates. Design/methodology/approach The bone plates were formed using fused deposition modeling (FDM) technique, with printing attributes being varied. The machine learning models such as linear regression, AdaBoost regression, gradient boosting regression (GBR), random forest, decision trees and k-nearest neighbors were trained for predicting tensile strength and flexural strength. Model performance was assessed using root mean square error (RMSE), coefficient of determination (R2) and mean absolute error (MAE). Findings Traditional experimentation with various settings is both time-consuming and expensive, emphasizing the need for alternative approaches. Among the models tested, GBR model demonstrated the best performance in predicting both tensile and flexural strength and achieved the lowest RMSE, highest R2 and lowest MAE, which are 1.4778 ± 0.4336 MPa, 0.9213 ± 0.0589 and 1.2555 ± 0.3799 MPa, respectively, and 3.0337 ± 0.3725 MPa, 0.9269 ± 0.0293 and 2.3815 ± 0.2915 MPa, respectively. The findings open up opportunities for doctors and surgeons to use GBR as a reliable tool for fabricating patient-specific bone plates, without the need for extensive trial experiments. Research limitations/implications The current study is limited to the usage of a few models. Other machine learning-based models can be used for prediction-based study. Originality/value This study uses machine learning to predict the mechanical properties of FDM-based distal ulna bone plate, replacing traditional design of experiments methods with machine learning to streamline the production of orthopedic implants. It helps medical professionals, such as physicians and surgeons, make informed decisions when fabricating customized bone plates for their patients while reducing the need for time-consuming experimentation, thereby addressing a common limitation of 3D printing medical implants.
目的 三维(3D)打印要达到较高的机械强度,在很大程度上取决于打印工艺参数。试验不同的打印设置既费时又费钱。本研究旨在提出一种基于回归的机器学习模型来预测尺骨骨板的机械性能。 设计/方法/途径 采用熔融沉积建模(FDM)技术制作骨板,并改变打印属性。训练了线性回归、AdaBoost 回归、梯度提升回归(GBR)、随机森林、决策树和 k 近邻等机器学习模型,用于预测抗拉强度和抗弯强度。使用均方根误差 (RMSE)、判定系数 (R2) 和平均绝对误差 (MAE) 评估模型性能。 研究结果 传统的各种设置实验既费时又费钱,因此需要采用替代方法。在所测试的模型中,GBR 模型在预测拉伸和弯曲强度方面表现最佳,实现了最低的 RMSE、最高的 R2 和最低的 MAE,分别为 1.4778 ± 0.4336 MPa、0.9213 ± 0.0589 和 1.2555 ± 0.3799 MPa,以及 3.0337 ± 0.3725 MPa、0.9269 ± 0.0293 和 2.3815 ± 0.2915 MPa。这些研究结果为医生和外科医生提供了使用 GBR 的机会,使其成为制作患者特异性骨板的可靠工具,而无需进行大量试验。 研究局限性/意义 目前的研究仅限于几个模型的使用。其他基于机器学习的模型也可用于基于预测的研究。 原创性/价值 本研究利用机器学习预测了基于 FDM 的尺骨远端骨板的机械性能,用机器学习取代了传统的实验设计方法,从而简化了骨科植入物的生产。它有助于内科医生和外科医生等医疗专业人士在为患者制作定制骨板时做出明智的决策,同时减少了耗时的实验,从而解决了 3D 打印医疗植入物的一个常见限制。
{"title":"Machine learning for forecasting the biomechanical behavior of orthopedic bone plates fabricated by fused deposition modeling","authors":"Shrutika Sharma, Vishal Gupta, D. Mudgal, Vishal Srivastava","doi":"10.1108/rpj-02-2023-0042","DOIUrl":"https://doi.org/10.1108/rpj-02-2023-0042","url":null,"abstract":"Purpose Three-dimensional (3D) printing is highly dependent on printing process parameters for achieving high mechanical strength. It is a time-consuming and expensive operation to experiment with different printing settings. The current study aims to propose a regression-based machine learning model to predict the mechanical behavior of ulna bone plates. Design/methodology/approach The bone plates were formed using fused deposition modeling (FDM) technique, with printing attributes being varied. The machine learning models such as linear regression, AdaBoost regression, gradient boosting regression (GBR), random forest, decision trees and k-nearest neighbors were trained for predicting tensile strength and flexural strength. Model performance was assessed using root mean square error (RMSE), coefficient of determination (R2) and mean absolute error (MAE). Findings Traditional experimentation with various settings is both time-consuming and expensive, emphasizing the need for alternative approaches. Among the models tested, GBR model demonstrated the best performance in predicting both tensile and flexural strength and achieved the lowest RMSE, highest R2 and lowest MAE, which are 1.4778 ± 0.4336 MPa, 0.9213 ± 0.0589 and 1.2555 ± 0.3799 MPa, respectively, and 3.0337 ± 0.3725 MPa, 0.9269 ± 0.0293 and 2.3815 ± 0.2915 MPa, respectively. The findings open up opportunities for doctors and surgeons to use GBR as a reliable tool for fabricating patient-specific bone plates, without the need for extensive trial experiments. Research limitations/implications The current study is limited to the usage of a few models. Other machine learning-based models can be used for prediction-based study. Originality/value This study uses machine learning to predict the mechanical properties of FDM-based distal ulna bone plate, replacing traditional design of experiments methods with machine learning to streamline the production of orthopedic implants. It helps medical professionals, such as physicians and surgeons, make informed decisions when fabricating customized bone plates for their patients while reducing the need for time-consuming experimentation, thereby addressing a common limitation of 3D printing medical implants.","PeriodicalId":20981,"journal":{"name":"Rapid Prototyping Journal","volume":"10 5","pages":""},"PeriodicalIF":3.9,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139128984","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Fiber reinforced additive manufacturing: structurally motivated print orientation and sequential topology optimization of anisotropic material 纤维增强增材制造:各向异性材料的结构性打印定向和顺序拓扑优化
IF 3.9 4区 工程技术 Q1 ENGINEERING, MECHANICAL Pub Date : 2023-12-29 DOI: 10.1108/rpj-08-2023-0276
Noah Ray, Il Yong Kim
Purpose Fiber reinforced additive manufacturing (FRAM) is an emerging technology that combines additive manufacturing and composite materials. As a result, design freedom offered by the manufacturing process can be leveraged in design optimization. The purpose of the study is to propose a novel method that improves structural performance by optimizing 3D print orientation of FRAM components. Design/methodology/approach This work proposes a two-part design optimization method that optimizes 3D global print orientation and topology of a component to improve a structural objective function. The method considers two classes of design variables: (1) print orientation design variables and (2) density-based topology design variables. Print orientation design variables determine a unique 3D print orientation to influence anisotropic material properties. Topology optimization determines an optimal distribution of material within the optimized print orientation. Findings Two academic examples are used to demonstrate basic behavior of the method in tension and shear. Print orientation and sequential topology optimization improve structural compliance by 90% and 58%, respectively. An industry-level example, an aerospace component, is optimized. The proposed method is used to achieve an 11% and 15% reduction of structural compliance compared to alternative FRAM designs. In addition, compliance is reduced by 43% compared to an equal-mass aluminum design. Originality/value Current research surrounding FRAM focuses on the manufacturing process and neglects opportunities to leverage design freedom provided by FRAM. Previous FRAM optimization methods only optimize fiber orientation within a 2D plane and do not establish an optimized 3D print orientation, neglecting exploration of the entire orientation design space.
目的 纤维增强增材制造(FRAM)是一项新兴技术,它将增材制造与复合材料相结合。因此,制造工艺提供的设计自由度可用于优化设计。本研究旨在提出一种新方法,通过优化 FRAM 组件的 3D 打印方向来提高结构性能。 设计/方法/途径 这项工作提出了一种由两部分组成的设计优化方法,可优化部件的三维全局打印方向和拓扑结构,以改善结构目标函数。该方法考虑了两类设计变量:(1) 打印方向设计变量和 (2) 基于密度的拓扑设计变量。打印方向设计变量确定独特的三维打印方向,以影响各向异性的材料特性。拓扑优化决定了材料在优化打印方向上的最佳分布。 研究结果 通过两个学术范例展示了该方法在拉伸和剪切时的基本行为。打印方向和顺序拓扑优化分别将结构顺应性提高了 90% 和 58%。优化了一个工业级实例,即一个航空航天部件。与其他 FRAM 设计相比,所提出的方法使结构顺应性分别降低了 11% 和 15%。此外,与等质量铝设计相比,结构顺应性降低了 43%。 原创性/价值 目前围绕 FRAM 的研究主要集中在制造工艺上,忽略了利用 FRAM 提供的设计自由度的机会。以前的 FRAM 优化方法只能优化二维平面内的纤维取向,不能建立优化的三维打印取向,从而忽略了对整个取向设计空间的探索。
{"title":"Fiber reinforced additive manufacturing: structurally motivated print orientation and sequential topology optimization of anisotropic material","authors":"Noah Ray, Il Yong Kim","doi":"10.1108/rpj-08-2023-0276","DOIUrl":"https://doi.org/10.1108/rpj-08-2023-0276","url":null,"abstract":"Purpose Fiber reinforced additive manufacturing (FRAM) is an emerging technology that combines additive manufacturing and composite materials. As a result, design freedom offered by the manufacturing process can be leveraged in design optimization. The purpose of the study is to propose a novel method that improves structural performance by optimizing 3D print orientation of FRAM components. Design/methodology/approach This work proposes a two-part design optimization method that optimizes 3D global print orientation and topology of a component to improve a structural objective function. The method considers two classes of design variables: (1) print orientation design variables and (2) density-based topology design variables. Print orientation design variables determine a unique 3D print orientation to influence anisotropic material properties. Topology optimization determines an optimal distribution of material within the optimized print orientation. Findings Two academic examples are used to demonstrate basic behavior of the method in tension and shear. Print orientation and sequential topology optimization improve structural compliance by 90% and 58%, respectively. An industry-level example, an aerospace component, is optimized. The proposed method is used to achieve an 11% and 15% reduction of structural compliance compared to alternative FRAM designs. In addition, compliance is reduced by 43% compared to an equal-mass aluminum design. Originality/value Current research surrounding FRAM focuses on the manufacturing process and neglects opportunities to leverage design freedom provided by FRAM. Previous FRAM optimization methods only optimize fiber orientation within a 2D plane and do not establish an optimized 3D print orientation, neglecting exploration of the entire orientation design space.","PeriodicalId":20981,"journal":{"name":"Rapid Prototyping Journal","volume":" 32","pages":""},"PeriodicalIF":3.9,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139142768","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Effect of scan speed on corrosion and tribocorrosion properties of cobalt-chromium alloy in situ produced by selective laser melting 扫描速度对选择性激光熔化原位生产的钴铬合金的腐蚀和摩擦腐蚀特性的影响
IF 3.9 4区 工程技术 Q1 ENGINEERING, MECHANICAL Pub Date : 2023-12-26 DOI: 10.1108/rpj-02-2023-0068
Raghad Ahmed Alaloosi, O. Çomaklı, Mustafa Yazıcı, Ziad A. Taha
Purpose This paper aims to investigate the influence of scan speed on the corrosion and tribocorrosion features of the CoCrMoW samples fabricated via the selective laser melting (SLM) process. Design/methodology/approach CoCrMoW samples were produced by SLM at different scan speeds. Produced samples were made via structural surveys (X-ray diffraction examinations and scanning electron microscopic analyses), hardness measurements and electrochemical and tribocorrosion experiments. Findings Outcomes displayed that the corrosion and tribocorrosion properties of CoCrMoW alloy were significantly influenced by scanning speeds. Also, these properties of the alloy increased with increasing scanning speeds. CoCrMoW samples produced at a laser scan speed of 1,000 mm/s showed the best resistance to corrosion and tribocorrosion. This could be related to the high hardness and low grain structure of the fabricated samples. Originality/value This paper may be a practical reference and offers insight into the effect of scanning speeds on the increase of hardness, tribological and corrosion performance of CoCrMoW alloys. This study can help in the further advancement of cobalt-chromium alloy in situ produced by SLM for both electrochemical and tribocorrosion behavior for biomedical applications.
目的 本文旨在研究扫描速度对通过选择性激光熔化(SLM)工艺制作的 CoCrMoW 样品的腐蚀和摩擦腐蚀特征的影响。 设计/方法/途径 通过 SLM 以不同的扫描速度制作 CoCrMoW 样品。对制作的样品进行了结构调查(X 射线衍射检查和扫描电子显微镜分析)、硬度测量以及电化学和摩擦腐蚀实验。 研究结果表明,CoCrMoW 合金的腐蚀和摩擦腐蚀特性受到扫描速度的显著影响。而且,随着扫描速度的增加,合金的这些特性也会增加。以 1,000 mm/s 的激光扫描速度制作的 CoCrMoW 样品显示出最佳的耐腐蚀性和耐摩擦腐蚀性。这可能与所制造样品的高硬度和低晶粒结构有关。 独创性/价值 本文可作为实用参考文献,有助于深入了解扫描速度对 CoCrMoW 合金硬度、摩擦学和腐蚀性能提高的影响。这项研究有助于进一步提高 SLM 原位生产的钴铬合金在生物医学应用中的电化学和摩擦腐蚀性能。
{"title":"Effect of scan speed on corrosion and tribocorrosion properties of cobalt-chromium alloy in situ produced by selective laser melting","authors":"Raghad Ahmed Alaloosi, O. Çomaklı, Mustafa Yazıcı, Ziad A. Taha","doi":"10.1108/rpj-02-2023-0068","DOIUrl":"https://doi.org/10.1108/rpj-02-2023-0068","url":null,"abstract":"Purpose This paper aims to investigate the influence of scan speed on the corrosion and tribocorrosion features of the CoCrMoW samples fabricated via the selective laser melting (SLM) process. Design/methodology/approach CoCrMoW samples were produced by SLM at different scan speeds. Produced samples were made via structural surveys (X-ray diffraction examinations and scanning electron microscopic analyses), hardness measurements and electrochemical and tribocorrosion experiments. Findings Outcomes displayed that the corrosion and tribocorrosion properties of CoCrMoW alloy were significantly influenced by scanning speeds. Also, these properties of the alloy increased with increasing scanning speeds. CoCrMoW samples produced at a laser scan speed of 1,000 mm/s showed the best resistance to corrosion and tribocorrosion. This could be related to the high hardness and low grain structure of the fabricated samples. Originality/value This paper may be a practical reference and offers insight into the effect of scanning speeds on the increase of hardness, tribological and corrosion performance of CoCrMoW alloys. This study can help in the further advancement of cobalt-chromium alloy in situ produced by SLM for both electrochemical and tribocorrosion behavior for biomedical applications.","PeriodicalId":20981,"journal":{"name":"Rapid Prototyping Journal","volume":"70 9","pages":""},"PeriodicalIF":3.9,"publicationDate":"2023-12-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139155251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modeling the effect of processing parameters on temperature history in Directed Energy Deposition: an analytical and finite element approach 定向能沉积中加工参数对温度历史的影响建模:一种分析和有限元方法
IF 3.9 4区 工程技术 Q1 ENGINEERING, MECHANICAL Pub Date : 2023-12-21 DOI: 10.1108/rpj-05-2023-0165
M. Ghasempour-Mouziraji, Daniel Afonso, Saman Hosseinzadeh, Constantinos Goulas, Mojtaba Najafizadeh, Morteza Hosseinzadeh, D.D. Ganji, Ricardo Alves de Sousa
PurposeThe purpose of this paper is to assess the feasibility of analytical models, specifically the radial basis function method, Akbari–Ganji method and Gaussian method, in conjunction with the finite element method. The aim is to examine the impact of processing parameters on temperature history.Design/methodology/approachThrough analytical investigation and finite element simulation, this research examines the influence of processing parameters on temperature history. Simufact software with a thermomechanical approach was used for finite element simulation, while radial basis function, Akbari–Ganji and Gaussian methods were used for analytical modeling to solve the heat transfer differential equation.FindingsThe accuracy of both finite element and analytical methods was validated with about 90%. The findings revealed direct relationships between thermal conductivity (from 100 to 200), laser power (from 400 to 800 W), heat source depth (from 0.35 to 0.75) and power absorption coefficient (from 0.4 to 0.8). Increasing the values of these parameters led to higher temperature history. On the other hand, density (from 7,600 to 8,200), emission coefficient (from 0.5 to 0.7) and convective heat transfer (from 35 to 90) exhibited an inverse relationship with temperature history.Originality/valueThe application of analytical modeling, particularly the utilization of the Akbari–Ganji, radial basis functions and Gaussian methods, showcases an innovative approach to studying directed energy deposition. This analytical investigation offers an alternative to relying solely on experimental procedures, potentially saving time and resources in the optimization of DED processes.
目的本文旨在评估分析模型(特别是径向基函数法、Akbari-Ganji 法和高斯法)与有限元法相结合的可行性。设计/方法/途径通过分析调查和有限元模拟,本研究探讨了加工参数对温度历史的影响。有限元模拟使用了 Simufact 软件的热力学方法,而分析建模则使用了径向基函数、Akbari-Ganji 和高斯方法来求解传热微分方程。研究结果表明,热导率(从 100 到 200)、激光功率(从 400 到 800 W)、热源深度(从 0.35 到 0.75)和功率吸收系数(从 0.4 到 0.8)之间存在直接关系。这些参数值的增加会导致更高的温度历史。另一方面,密度(从 7,600 升至 8,200)、发射系数(从 0.5 升至 0.7)和对流传热(从 35 升至 90)与历史温度呈反比关系。原创性/价值分析建模的应用,特别是 Akbari-Ganji 方法、径向基函数和高斯方法的使用,展示了研究定向能量沉积的创新方法。这种分析研究提供了完全依赖实验程序的替代方法,有可能为定向能沉积过程的优化节省时间和资源。
{"title":"Modeling the effect of processing parameters on temperature history in Directed Energy Deposition: an analytical and finite element approach","authors":"M. Ghasempour-Mouziraji, Daniel Afonso, Saman Hosseinzadeh, Constantinos Goulas, Mojtaba Najafizadeh, Morteza Hosseinzadeh, D.D. Ganji, Ricardo Alves de Sousa","doi":"10.1108/rpj-05-2023-0165","DOIUrl":"https://doi.org/10.1108/rpj-05-2023-0165","url":null,"abstract":"\u0000Purpose\u0000The purpose of this paper is to assess the feasibility of analytical models, specifically the radial basis function method, Akbari–Ganji method and Gaussian method, in conjunction with the finite element method. The aim is to examine the impact of processing parameters on temperature history.\u0000\u0000\u0000Design/methodology/approach\u0000Through analytical investigation and finite element simulation, this research examines the influence of processing parameters on temperature history. Simufact software with a thermomechanical approach was used for finite element simulation, while radial basis function, Akbari–Ganji and Gaussian methods were used for analytical modeling to solve the heat transfer differential equation.\u0000\u0000\u0000Findings\u0000The accuracy of both finite element and analytical methods was validated with about 90%. The findings revealed direct relationships between thermal conductivity (from 100 to 200), laser power (from 400 to 800 W), heat source depth (from 0.35 to 0.75) and power absorption coefficient (from 0.4 to 0.8). Increasing the values of these parameters led to higher temperature history. On the other hand, density (from 7,600 to 8,200), emission coefficient (from 0.5 to 0.7) and convective heat transfer (from 35 to 90) exhibited an inverse relationship with temperature history.\u0000\u0000\u0000Originality/value\u0000The application of analytical modeling, particularly the utilization of the Akbari–Ganji, radial basis functions and Gaussian methods, showcases an innovative approach to studying directed energy deposition. This analytical investigation offers an alternative to relying solely on experimental procedures, potentially saving time and resources in the optimization of DED processes.\u0000","PeriodicalId":20981,"journal":{"name":"Rapid Prototyping Journal","volume":"37 13","pages":""},"PeriodicalIF":3.9,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138952634","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Enhanced-pixel strategy for wire arc additive manufacturing trajectory planning: operational efficiency and effectiveness analyses 线弧增材制造轨迹规划的增强型像素策略:运行效率和效果分析
IF 3.9 4区 工程技术 Q1 ENGINEERING, MECHANICAL Pub Date : 2023-12-21 DOI: 10.1108/rpj-12-2022-0413
Rafael Pereira Ferreira, L. Vilarinho, A. Scotti
PurposeThis study aims to propose and evaluate the progress in the basic-pixel (a strategy to generate continuous trajectories that fill out the entire surface) algorithm towards performance gain. The objective is also to investigate the operational efficiency and effectiveness of an enhanced version compared with conventional strategies.Design/methodology/approachFor the first objective, the proposed methodology is to apply the improvements proposed in the basic-pixel strategy, test it on three demonstrative parts and statistically evaluate the performance using the distance trajectory criterion. For the second objective, the enhanced-pixel strategy is compared with conventional strategies in terms of trajectory distance, build time and the number of arcs starts and stops (operational efficiency) and targeting the nominal geometry of a part (operational effectiveness).FindingsThe results showed that the improvements proposed to the basic-pixel strategy could generate continuous trajectories with shorter distances and comparable building times (operational efficiency). Regarding operational effectiveness, the parts built by the enhanced-pixel strategy presented lower dimensional deviation than the other strategies studied. Therefore, the enhanced-pixel strategy appears to be a good candidate for building more complex printable parts and delivering operational efficiency and effectiveness.Originality/valueThis paper presents an evolution of the basic-pixel strategy (a space-filling strategy) with the introduction of new elements in the algorithm and proves the improvement of the strategy’s performance with this. An interesting comparison is also presented in terms of operational efficiency and effectiveness between the enhanced-pixel strategy and conventional strategies.
目的 本研究旨在提出并评估基本像素算法(一种生成填充整个表面的连续轨迹的策略)在提高性能方面取得的进展。设计/方法/途径对于第一个目标,建议的方法是应用在基本像素策略中提出的改进,在三个示范部件上进行测试,并使用距离轨迹标准对性能进行统计评估。第二个目标是比较增强型像素策略与传统策略在轨迹距离、构建时间、弧线起始和停止次数(运行效率)以及针对零件标称几何形状(运行效率)方面的性能。在运行效率方面,采用增强型像素策略生成的零件的尺寸偏差低于所研究的其他策略。因此,增强型像素策略似乎是构建更复杂的可打印部件并提供运行效率和效果的良好候选方案。 原创性/价值 本文介绍了基本像素策略(一种空间填充策略)的演变,在算法中引入了新的元素,并证明了该策略性能的提高。本文还对增强型像素策略与传统策略在运行效率和效果方面进行了有趣的比较。
{"title":"Enhanced-pixel strategy for wire arc additive manufacturing trajectory planning: operational efficiency and effectiveness analyses","authors":"Rafael Pereira Ferreira, L. Vilarinho, A. Scotti","doi":"10.1108/rpj-12-2022-0413","DOIUrl":"https://doi.org/10.1108/rpj-12-2022-0413","url":null,"abstract":"\u0000Purpose\u0000This study aims to propose and evaluate the progress in the basic-pixel (a strategy to generate continuous trajectories that fill out the entire surface) algorithm towards performance gain. The objective is also to investigate the operational efficiency and effectiveness of an enhanced version compared with conventional strategies.\u0000\u0000\u0000Design/methodology/approach\u0000For the first objective, the proposed methodology is to apply the improvements proposed in the basic-pixel strategy, test it on three demonstrative parts and statistically evaluate the performance using the distance trajectory criterion. For the second objective, the enhanced-pixel strategy is compared with conventional strategies in terms of trajectory distance, build time and the number of arcs starts and stops (operational efficiency) and targeting the nominal geometry of a part (operational effectiveness).\u0000\u0000\u0000Findings\u0000The results showed that the improvements proposed to the basic-pixel strategy could generate continuous trajectories with shorter distances and comparable building times (operational efficiency). Regarding operational effectiveness, the parts built by the enhanced-pixel strategy presented lower dimensional deviation than the other strategies studied. Therefore, the enhanced-pixel strategy appears to be a good candidate for building more complex printable parts and delivering operational efficiency and effectiveness.\u0000\u0000\u0000Originality/value\u0000This paper presents an evolution of the basic-pixel strategy (a space-filling strategy) with the introduction of new elements in the algorithm and proves the improvement of the strategy’s performance with this. An interesting comparison is also presented in terms of operational efficiency and effectiveness between the enhanced-pixel strategy and conventional strategies.\u0000","PeriodicalId":20981,"journal":{"name":"Rapid Prototyping Journal","volume":"63 11","pages":""},"PeriodicalIF":3.9,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138952908","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
期刊
Rapid Prototyping Journal
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1