Pub Date : 2024-06-13DOI: 10.1177/09544089241259758
Aman Singh Rajpoot, Tushar Choudhary, H. Chelladurai, Upendra Rajak, A. Sinha
Various types of alternative fuels and their additives have undergone extensive investigation to analyze their effects on diesel engine performance. The aim of this study is to comprehensively evaluate the effects on performance and sustainability while employing blends of palm oil biodiesel and diesel, together with the introduction of oxyhydrogen (HHO) gas, in a diesel engine. The objectives include evaluating energy, exergy and sustainability parameters in order to ascertain the effectiveness of certain fuel mixtures. The study examined five different fuel mixtures: PB0, PB10, PB20, PB10HHO and PB20HHO. The HHO gas was injected into the cylinder alongside the air at a flow rate of 0.3 LPM. The primary results indicate significant enhancements in energy and exergy efficiency when HHO gas is used in conjunction with palm oil biodiesel, resulting in gains of up to 1.52% and 1.43%, respectively, compared to using biodiesel blends alone. In addition, the introduction of HHO gas resulted in a drop of up to 4.58% in brake-specific fuel consumption (BSFC). The use of biodiesel blends in conjunction with HHO gas led to a noteworthy decrease of up to 11.4% in carbon dioxide (CO2) and 5.7% in hydrocarbon (HC) emissions. Nevertheless, there was a notable rise of up to 9.56% in nitric oxide (NO) emissions. With the HHO-supplied condition, the combination was shown to have up to a 2.05% better sustainability index. The PB10HHO and PB20HHO blends provide improved performance when compared to pure biodiesel blends and conventional diesel. This study offers a unique approach to increasing diesel engine performance through the synergistic usage of biodiesel blends and HHO gas.
{"title":"Effect of oxyhydrogen as on energy, exergy and sustainability analysis of a diesel engine fueled with palm oil biodiesel","authors":"Aman Singh Rajpoot, Tushar Choudhary, H. Chelladurai, Upendra Rajak, A. Sinha","doi":"10.1177/09544089241259758","DOIUrl":"https://doi.org/10.1177/09544089241259758","url":null,"abstract":"Various types of alternative fuels and their additives have undergone extensive investigation to analyze their effects on diesel engine performance. The aim of this study is to comprehensively evaluate the effects on performance and sustainability while employing blends of palm oil biodiesel and diesel, together with the introduction of oxyhydrogen (HHO) gas, in a diesel engine. The objectives include evaluating energy, exergy and sustainability parameters in order to ascertain the effectiveness of certain fuel mixtures. The study examined five different fuel mixtures: PB0, PB10, PB20, PB10HHO and PB20HHO. The HHO gas was injected into the cylinder alongside the air at a flow rate of 0.3 LPM. The primary results indicate significant enhancements in energy and exergy efficiency when HHO gas is used in conjunction with palm oil biodiesel, resulting in gains of up to 1.52% and 1.43%, respectively, compared to using biodiesel blends alone. In addition, the introduction of HHO gas resulted in a drop of up to 4.58% in brake-specific fuel consumption (BSFC). The use of biodiesel blends in conjunction with HHO gas led to a noteworthy decrease of up to 11.4% in carbon dioxide (CO2) and 5.7% in hydrocarbon (HC) emissions. Nevertheless, there was a notable rise of up to 9.56% in nitric oxide (NO) emissions. With the HHO-supplied condition, the combination was shown to have up to a 2.05% better sustainability index. The PB10HHO and PB20HHO blends provide improved performance when compared to pure biodiesel blends and conventional diesel. This study offers a unique approach to increasing diesel engine performance through the synergistic usage of biodiesel blends and HHO gas.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"32 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141346090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-13DOI: 10.1177/09544089241256591
Aniket Roushan, Sampad Biswas, Chetan
For the past century, conventional cutting fluids (CCFs) have been used extensively to machine various engineering materials. CCFs are also known as metalworking fluids (MWFs). These MWFs are considered the perfect environment for the growth of various micro-organisms. For sustainable manufacturing, it is important to adopt strategies that can reduce, replace, or remove the MWFs from the machining domain. This paper discusses the emerging sustainable techniques which are being successfully employed in the machining domain to reduce the application of MWFs. Most of these strategies have the potential to greatly improve machining tribology when implemented in production processes like turning, milling, and drilling.
{"title":"Emerging sustainable techniques in metal cutting to reduce the application of metalworking fluids: A review","authors":"Aniket Roushan, Sampad Biswas, Chetan","doi":"10.1177/09544089241256591","DOIUrl":"https://doi.org/10.1177/09544089241256591","url":null,"abstract":"For the past century, conventional cutting fluids (CCFs) have been used extensively to machine various engineering materials. CCFs are also known as metalworking fluids (MWFs). These MWFs are considered the perfect environment for the growth of various micro-organisms. For sustainable manufacturing, it is important to adopt strategies that can reduce, replace, or remove the MWFs from the machining domain. This paper discusses the emerging sustainable techniques which are being successfully employed in the machining domain to reduce the application of MWFs. Most of these strategies have the potential to greatly improve machining tribology when implemented in production processes like turning, milling, and drilling.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"56 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141349391","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-13DOI: 10.1177/09544089241260222
K. Periasamy, P. Prathap, A. Arunnath, S. Madhu
The role of silica in the aluminium alloy is to enhance its mechanical properties. Silica is an eco-friendly material that lowers the melting temperature which in turn enhances the fluidity of alloys. Low-cost synthesis, abundant natural resources, and mass production are other merits of silicon. In this investigation, plant-based bio-silica particles were incorporated in aluminium 7075 hybrid composites. The rice husk is rich in silica, and when it is burned or processed, it turns into ash, known as rice husk ash (RHA). After purification, the silica in RHA can be extracted using alkali fusion. Stir casting processes were used to fabricate hybrid composite material. Aluminium 7075 hybrid composites reinforced with different wt.% (0, 3, 6, and 9) of bio-silica extracted from rice husk were fabricated. Mechanical properties such as tensile, hardness, and impact were evaluated. Also, corrosion resistance was studied for the fabricated composites. The samples with different proportional values such as AlB (Al7075), AlBS1 (97 wt. % Al7075 + 3 wt. % bio-silica), AlBS2 (94% Al7075 + 6 wt. % bio-silica), and AlBS3 (91 wt. % Al7075 + 9 wt. % bio-silica) were fabricated by the stir casting process. Detailed microstructure characterization has been investigated using scanning electron microscopy (SEM). AlBS3 hybrid composites demonstrate a notable enhancement of 303.66 Mpa tensile strength and we observed a remarkable 10% increase in ductility compared to other composites. It was noticed that the sample AlBS3 shows an increased hardness of 162.4 HV and an impact energy of 26.67 kJ/mm2 due to the increased number of bio-silica particles. SEM-based fractography analysis of tensile and impact test specimens revealed the presence of dimples, cleavage facets, and intergranular cracks offering valuable insights into the failure mode.
{"title":"Exploring the effect of bio-silica on the mechanical, microstructural, and corrosion properties of aluminium metal matrix composites","authors":"K. Periasamy, P. Prathap, A. Arunnath, S. Madhu","doi":"10.1177/09544089241260222","DOIUrl":"https://doi.org/10.1177/09544089241260222","url":null,"abstract":"The role of silica in the aluminium alloy is to enhance its mechanical properties. Silica is an eco-friendly material that lowers the melting temperature which in turn enhances the fluidity of alloys. Low-cost synthesis, abundant natural resources, and mass production are other merits of silicon. In this investigation, plant-based bio-silica particles were incorporated in aluminium 7075 hybrid composites. The rice husk is rich in silica, and when it is burned or processed, it turns into ash, known as rice husk ash (RHA). After purification, the silica in RHA can be extracted using alkali fusion. Stir casting processes were used to fabricate hybrid composite material. Aluminium 7075 hybrid composites reinforced with different wt.% (0, 3, 6, and 9) of bio-silica extracted from rice husk were fabricated. Mechanical properties such as tensile, hardness, and impact were evaluated. Also, corrosion resistance was studied for the fabricated composites. The samples with different proportional values such as AlB (Al7075), AlBS1 (97 wt. % Al7075 + 3 wt. % bio-silica), AlBS2 (94% Al7075 + 6 wt. % bio-silica), and AlBS3 (91 wt. % Al7075 + 9 wt. % bio-silica) were fabricated by the stir casting process. Detailed microstructure characterization has been investigated using scanning electron microscopy (SEM). AlBS3 hybrid composites demonstrate a notable enhancement of 303.66 Mpa tensile strength and we observed a remarkable 10% increase in ductility compared to other composites. It was noticed that the sample AlBS3 shows an increased hardness of 162.4 HV and an impact energy of 26.67 kJ/mm2 due to the increased number of bio-silica particles. SEM-based fractography analysis of tensile and impact test specimens revealed the presence of dimples, cleavage facets, and intergranular cracks offering valuable insights into the failure mode.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"45 17","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141345703","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-13DOI: 10.1177/09544089241256758
Hüseyin Gürbüz, Şehmus Baday
Inconel 718 is extensively used in crucial fields such as aerospace, space researches, and space stations due to its superior features such as high mechanical strength even at very high temperatures, high oxidation resistance, and resistance to high temperatures. However, this material is categorized as a difficult-to-machine material owing to its high specific strength, high tool wear, and low thermal properties leading to poor machinability and poor surface integrity during machining. In order to overcome the challenges that arise during the machining of these materials, the cryogenic process, which has been very popular in recent years, have come to the fore due to the wear resistance and hardness it provides for the tool. In this statistical and experimental study, Inconel 718 was milled with cryogenically uncoated end mill (UCC) and uncoated end mill (UC) at different cutting parameters. Surface roughness, abrasive wear, cutting forces, cutting tool wear, vibration values, hardness and Build up Edge (BUE) formation obtained as a result of machining experiments were investigated. It was determined that the values of all experimental results obtained with UCCs are lower than those of UCs. Also, the second order equations (by response surface methodology (RSM)) showed very promising values of R2 (above 90%) and thus reflected the appropriate relation of the independent and dependent variables; therefore, RSM approach can be successfully implemented for predicting experimental values in milling Inconel 718 with UCCs and UCs.
{"title":"Comprehensive investigation of the effect of cryogenic process on machining of Inconel 718 superalloys with uncoated end mills","authors":"Hüseyin Gürbüz, Şehmus Baday","doi":"10.1177/09544089241256758","DOIUrl":"https://doi.org/10.1177/09544089241256758","url":null,"abstract":"Inconel 718 is extensively used in crucial fields such as aerospace, space researches, and space stations due to its superior features such as high mechanical strength even at very high temperatures, high oxidation resistance, and resistance to high temperatures. However, this material is categorized as a difficult-to-machine material owing to its high specific strength, high tool wear, and low thermal properties leading to poor machinability and poor surface integrity during machining. In order to overcome the challenges that arise during the machining of these materials, the cryogenic process, which has been very popular in recent years, have come to the fore due to the wear resistance and hardness it provides for the tool. In this statistical and experimental study, Inconel 718 was milled with cryogenically uncoated end mill (UCC) and uncoated end mill (UC) at different cutting parameters. Surface roughness, abrasive wear, cutting forces, cutting tool wear, vibration values, hardness and Build up Edge (BUE) formation obtained as a result of machining experiments were investigated. It was determined that the values of all experimental results obtained with UCCs are lower than those of UCs. Also, the second order equations (by response surface methodology (RSM)) showed very promising values of R2 (above 90%) and thus reflected the appropriate relation of the independent and dependent variables; therefore, RSM approach can be successfully implemented for predicting experimental values in milling Inconel 718 with UCCs and UCs.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"41 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141347949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Fused deposition modelling (FDM) is a three-dimensional printing technique which has become more popular and spreading in many fields. In this process, the molten thermoplastic is deposited layer by layer using a heated nozzle. Users can set the infill pattern to save the material and printing time. The main objective of this study is to investigate the tensile properties of polylactic acid (PLA) and Acrylonitrile butadiene styrene (ABS) tensile specimens with different infill patterns such as lines, tri-hexagonal and lightning. Further, the test specimens were prepared as per ASTM D638 using Ender 3D printer with varying infill patterns. The specimens were subjected to tensile tests in a mechanical tensile testing machine. It was observed that the specimens with linear infill patterns obtained higher tensile strength than the tri-hexagonal and lightning pattern infilled specimens. Later on, a microstructural study was examined on the fractured surface using scanning-electron-microscopy (SEM). It shows that the line pattern specimens have more uniform structure when compared to hexagonal and lightning pattern specimens.
熔融沉积建模（FDM）是一种三维打印技术，已在许多领域得到普及和推广。在这一过程中，熔融热塑性塑料通过加热喷嘴逐层沉积。用户可以设置填充图案，以节省材料和打印时间。本研究的主要目的是研究聚乳酸（PLA）和丙烯腈-丁二烯-苯乙烯（ABS）拉伸试样在不同填充图案（如线条、三六边形和闪电）下的拉伸性能。此外，还使用 Ender 3D 打印机按照 ASTM D638 标准制备了具有不同填充图案的试样。试样在机械拉伸试验机上进行拉伸试验。结果表明，采用线性填充图案的试样比采用三六边形和闪电图案填充的试样获得更高的抗拉强度。随后，使用扫描电子显微镜（SEM）对断裂表面进行了微观结构研究。结果表明，与六角形和闪电形试样相比，线形试样的结构更为均匀。
{"title":"Effect of infill pattern on the mechanical properties of PLA and ABS specimens prepared by FDM 3D printing","authors":"Shishir Patel, Sneha Gupta, Harshit Saket, Kamesh Bakna, Shiv Singh Patel, Surender Kumar, Veeravalli Ramakoteswara Rao, R. Mandava","doi":"10.1177/09544089241258744","DOIUrl":"https://doi.org/10.1177/09544089241258744","url":null,"abstract":"Fused deposition modelling (FDM) is a three-dimensional printing technique which has become more popular and spreading in many fields. In this process, the molten thermoplastic is deposited layer by layer using a heated nozzle. Users can set the infill pattern to save the material and printing time. The main objective of this study is to investigate the tensile properties of polylactic acid (PLA) and Acrylonitrile butadiene styrene (ABS) tensile specimens with different infill patterns such as lines, tri-hexagonal and lightning. Further, the test specimens were prepared as per ASTM D638 using Ender 3D printer with varying infill patterns. The specimens were subjected to tensile tests in a mechanical tensile testing machine. It was observed that the specimens with linear infill patterns obtained higher tensile strength than the tri-hexagonal and lightning pattern infilled specimens. Later on, a microstructural study was examined on the fractured surface using scanning-electron-microscopy (SEM). It shows that the line pattern specimens have more uniform structure when compared to hexagonal and lightning pattern specimens.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"22 15","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141356337","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The processing of grinding data and the prediction of accuracy are extremely complex; this paper proposes a novel prediction method to ensure the machining accuracy of computer numerical control (CNC) grinding machines. It consists of two components, namely the filter decomposition recurrence plot (RP) transformation (FDRP) and the deep inverted residual attention network (DIRAN). A pipeline named FDRP has been designed to address the issues in the processing of data and the shortcomings of RP. Firstly, the displacement signals undergo filtering to preserve essential grinding information while effectively removing noise. Secondly, long-time series signals are decomposed and augmented based on the characteristics of the machining process. Lastly, an RP transformation is applied to one-dimensional time series data, resulting in the generation of images that accurately represent the grinding process. Furthermore, this paper proposes a novel machining accuracy prediction model. The DIRAN uses a multi-layer inverse residual network structure combined with attention mechanism to extract the features of two-dimensional RP, and its performance is better than other typical prediction methods. It can be applied to predict the polar angle of the workpiece in industrial processing and reduce the defect rate.
磨削数据的处理和精度预测极为复杂；本文提出了一种新型预测方法，以确保计算机数控（CNC）磨床的加工精度。它由两个部分组成，即滤波分解递归图（RP）变换（FDRP）和深度反转残差注意网络（DIRAN）。为了解决数据处理中的问题和 RP 的缺陷，设计了一个名为 FDRP 的管道。首先，对位移信号进行滤波处理，以保留基本的研磨信息，同时有效去除噪声。其次，根据加工过程的特点对长时间序列信号进行分解和增强。最后，对一维时间序列数据进行 RP 变换，生成能准确反映磨削过程的图像。此外，本文还提出了一种新颖的加工精度预测模型。DIRAN 采用多层反残差网络结构，结合注意力机制，提取二维 RP 的特征，其性能优于其他典型预测方法。它可用于预测工业加工中工件的极角，降低缺陷率。
{"title":"Precision prediction in grinding processes based on displacement signal conversion into recurrent plot","authors":"X. Li, Qian Tang, Longlong Li, Yushuan Wu, Yihua Cheng","doi":"10.1177/09544089241253681","DOIUrl":"https://doi.org/10.1177/09544089241253681","url":null,"abstract":"The processing of grinding data and the prediction of accuracy are extremely complex; this paper proposes a novel prediction method to ensure the machining accuracy of computer numerical control (CNC) grinding machines. It consists of two components, namely the filter decomposition recurrence plot (RP) transformation (FDRP) and the deep inverted residual attention network (DIRAN). A pipeline named FDRP has been designed to address the issues in the processing of data and the shortcomings of RP. Firstly, the displacement signals undergo filtering to preserve essential grinding information while effectively removing noise. Secondly, long-time series signals are decomposed and augmented based on the characteristics of the machining process. Lastly, an RP transformation is applied to one-dimensional time series data, resulting in the generation of images that accurately represent the grinding process. Furthermore, this paper proposes a novel machining accuracy prediction model. The DIRAN uses a multi-layer inverse residual network structure combined with attention mechanism to extract the features of two-dimensional RP, and its performance is better than other typical prediction methods. It can be applied to predict the polar angle of the workpiece in industrial processing and reduce the defect rate.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"25 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141356901","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-11DOI: 10.1177/09544089241259347
C. Zirngibl, S. Goetz, S. Wartzack
Focusing on upcoming challenges in lightweight design, such as increasing emission targets or novel multimaterial connections, versatile applicable and environmentally friendly production technologies are crucial. In this context, mechanical joining technology clinching offers a fast and energy-efficient procedure for assembling sheet metals, being a proper alternative to established joining methods, such as spot welding. However, the design of clinch points is a challenge, which is partly supported by numerical or data-based approaches for optimal tool dimensions assuring proper joint characteristics. While this is usually done for an ideal environment, real joining processes are characterized by multiple inevitably varying parameters, e.g. of the material, which have a significant impact on the quality of clinch points. Therefore, this contribution addresses the current gap by analyzing the effect of parameter variations or uncertainties on the resulting joint characteristics and studying the impact of the nominal tool design. Thus, an efficient meta-model-based variation simulation procedure is proposed and used for analyzing the effect of different tool design configurations and variation scenarios. Based on the results, it was found that varying process parameters have a strong impact on the resulting joint characteristics, whereby the effect significantly depends on the nominal tool design. This reveals the potential for a robust tool design and implies that the nominal tool design and the tolerancing of parameters should be done simultaneously for a reliable virtual joining point design without extensive iterations and physical tests.
{"title":"Influence of process variations on clinch joint characteristics considering the effect of the nominal tool design","authors":"C. Zirngibl, S. Goetz, S. Wartzack","doi":"10.1177/09544089241259347","DOIUrl":"https://doi.org/10.1177/09544089241259347","url":null,"abstract":"Focusing on upcoming challenges in lightweight design, such as increasing emission targets or novel multimaterial connections, versatile applicable and environmentally friendly production technologies are crucial. In this context, mechanical joining technology clinching offers a fast and energy-efficient procedure for assembling sheet metals, being a proper alternative to established joining methods, such as spot welding. However, the design of clinch points is a challenge, which is partly supported by numerical or data-based approaches for optimal tool dimensions assuring proper joint characteristics. While this is usually done for an ideal environment, real joining processes are characterized by multiple inevitably varying parameters, e.g. of the material, which have a significant impact on the quality of clinch points. Therefore, this contribution addresses the current gap by analyzing the effect of parameter variations or uncertainties on the resulting joint characteristics and studying the impact of the nominal tool design. Thus, an efficient meta-model-based variation simulation procedure is proposed and used for analyzing the effect of different tool design configurations and variation scenarios. Based on the results, it was found that varying process parameters have a strong impact on the resulting joint characteristics, whereby the effect significantly depends on the nominal tool design. This reveals the potential for a robust tool design and implies that the nominal tool design and the tolerancing of parameters should be done simultaneously for a reliable virtual joining point design without extensive iterations and physical tests.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"84 22","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141357982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-11DOI: 10.1177/09544089241259565
Zhuo Chen, Pinlu Cao, Guoqing Cui, Han Wang, Qilei Yin
The deep ice cores preserved within the polar ice sheets hold a wealth of valuable information, and the demand for ice cores in related scientific research is on the rise. Thus, the replication of ice cores from the borehole wall holds significant importance. However, current methods face limitations such as difficulties in whipstock retrieval, extended auxiliary working hours, structural complexity, and the necessity of ice core depth calibration. To address this, this study proposes a novel method for replicating ice cores from the borehole wall utilizing a thermal coring drill bit. The design and dynamic analysis of the scissor deployable mechanism employed to drive the drill bit movement were thoroughly examined through theoretical and simulation studies. The motion characteristics of the drill bit during the replication coring process and the stress–strain behavior of the scissor rods were determined and validated through drill bit movement experiments, demonstrating a maximum error of 10%. The findings reveal that the mechanism can meet the strength requirements across three operating stages: horizontal drilling, vertical coring, and ice core recovery, with maximum loads of approximately 284 N, 749 N, and 970 N, respectively. Increasing the thickness of the scissor rods and reducing their length can augment the load-bearing capacity of the structure. Additionally, the speed transmission characteristics derived from the scissor mechanism can offer theoretical support for the drill's control system.
保存在极地冰原中的深冰芯蕴藏着大量宝贵的信息，相关科学研究对冰芯的需求也在不断增加。因此，从钻孔壁复制冰芯具有重要意义。然而，目前的方法面临着一些限制，如鞭子取样困难、辅助工作时间延长、结构复杂以及必须进行冰芯深度校准等。为此，本研究提出了一种利用热取心钻头从井壁复制冰芯的新方法。通过理论和模拟研究，对用于驱动钻头运动的剪刀式可展开机构的设计和动态分析进行了深入研究。通过钻头运动实验，确定并验证了复制取心过程中钻头的运动特性和剪刀杆的应力应变行为，结果表明最大误差为 10%。研究结果表明，该机构可以满足水平钻探、垂直取芯和冰芯回收三个作业阶段的强度要求，最大载荷分别约为 284 N、749 N 和 970 N。增加剪刀杆的厚度并缩短其长度可以提高结构的承载能力。此外，剪刀机构的速度传输特性也可为钻机控制系统提供理论支持。
{"title":"Design and dynamic analysis of the scissor deployable mechanism used in the drill for replicating ice cores from the borehole wall","authors":"Zhuo Chen, Pinlu Cao, Guoqing Cui, Han Wang, Qilei Yin","doi":"10.1177/09544089241259565","DOIUrl":"https://doi.org/10.1177/09544089241259565","url":null,"abstract":"The deep ice cores preserved within the polar ice sheets hold a wealth of valuable information, and the demand for ice cores in related scientific research is on the rise. Thus, the replication of ice cores from the borehole wall holds significant importance. However, current methods face limitations such as difficulties in whipstock retrieval, extended auxiliary working hours, structural complexity, and the necessity of ice core depth calibration. To address this, this study proposes a novel method for replicating ice cores from the borehole wall utilizing a thermal coring drill bit. The design and dynamic analysis of the scissor deployable mechanism employed to drive the drill bit movement were thoroughly examined through theoretical and simulation studies. The motion characteristics of the drill bit during the replication coring process and the stress–strain behavior of the scissor rods were determined and validated through drill bit movement experiments, demonstrating a maximum error of 10%. The findings reveal that the mechanism can meet the strength requirements across three operating stages: horizontal drilling, vertical coring, and ice core recovery, with maximum loads of approximately 284 N, 749 N, and 970 N, respectively. Increasing the thickness of the scissor rods and reducing their length can augment the load-bearing capacity of the structure. Additionally, the speed transmission characteristics derived from the scissor mechanism can offer theoretical support for the drill's control system.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":"13 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141356542","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-07DOI: 10.1177/09544089241258177
I. Temizer, Fırat Gücer
Today, the tightening of exhaust emission regulations in engines directs researchers to alternative fuel types. In this study investigated the impact of blending diesel fuel with bioethanol and diethyl-ether on combustion parameters and exhaust emissions in a single-cylinder DI (direct injection) diesel engine. Both numerical and experimental analyses were used to compare the in-cylinder pressure and heat release rate of various fuel blends. Fuel spray/temperature/equivalence changes in the cylinder for different crank angles were created for different fuel types. The analysis was examined various parameters such as in-cylinder pressure, temperature, heat release rate, mass fraction burned, fuel spray formations, and equivalence ratio at variable crank angles. Results showed that all blended fuels exhibited a decrease in in-cylinder maximum pressure, temperature, and heat release rates compared to 100% diesel fuel, with an increase in mass fraction burned. CO2 emissions of D90E10 (90% diesel fuel + 10% bioethanol), D80E20 (80% diesel fuel + 20% bioethanol), D80E10DEE10 (80% diesel fuel 10% bioethanol + 10% diethyl ether) and D85E10DEE5 (85% diesel fuel + 10% bioethanol + 5% diethyl ether) fuelled engine were decreased rates 2%, 2.9%, 5% and 3.8% compared to D100 (100%diesel fuel) operation, respectively. Also, the maximum pressure in the chamber was decreased rate 3% in D80E10DEE10 fuel operation, compared to diesel fuel. Based on FTIR (Fourier Transform Infra-Red) data, the lubricating oil analyses showed that there was no significant decline in oil performance after 110 h of operation with different fuel types. However, a closer examination of the AVL FIRE program data and the EDX (Energy Dispersive X-Ray) analysis of the first ring uncovered that the wear patterns observed on the ring while using D100 fuel were heavily influenced by temperature and pressure parameters. This was particularly noticeable when compared to blended fuels that included bioethanol.
{"title":"The experimental and numerical investigation of biofuels on combustion and tribology characteristics in a compression ignition engine","authors":"I. Temizer, Fırat Gücer","doi":"10.1177/09544089241258177","DOIUrl":"https://doi.org/10.1177/09544089241258177","url":null,"abstract":"Today, the tightening of exhaust emission regulations in engines directs researchers to alternative fuel types. In this study investigated the impact of blending diesel fuel with bioethanol and diethyl-ether on combustion parameters and exhaust emissions in a single-cylinder DI (direct injection) diesel engine. Both numerical and experimental analyses were used to compare the in-cylinder pressure and heat release rate of various fuel blends. Fuel spray/temperature/equivalence changes in the cylinder for different crank angles were created for different fuel types. The analysis was examined various parameters such as in-cylinder pressure, temperature, heat release rate, mass fraction burned, fuel spray formations, and equivalence ratio at variable crank angles. Results showed that all blended fuels exhibited a decrease in in-cylinder maximum pressure, temperature, and heat release rates compared to 100% diesel fuel, with an increase in mass fraction burned. CO2 emissions of D90E10 (90% diesel fuel + 10% bioethanol), D80E20 (80% diesel fuel + 20% bioethanol), D80E10DEE10 (80% diesel fuel 10% bioethanol + 10% diethyl ether) and D85E10DEE5 (85% diesel fuel + 10% bioethanol + 5% diethyl ether) fuelled engine were decreased rates 2%, 2.9%, 5% and 3.8% compared to D100 (100%diesel fuel) operation, respectively. Also, the maximum pressure in the chamber was decreased rate 3% in D80E10DEE10 fuel operation, compared to diesel fuel. Based on FTIR (Fourier Transform Infra-Red) data, the lubricating oil analyses showed that there was no significant decline in oil performance after 110 h of operation with different fuel types. However, a closer examination of the AVL FIRE program data and the EDX (Energy Dispersive X-Ray) analysis of the first ring uncovered that the wear patterns observed on the ring while using D100 fuel were heavily influenced by temperature and pressure parameters. This was particularly noticeable when compared to blended fuels that included bioethanol.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":" 7","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141372325","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-06-07DOI: 10.1177/09544089241258842
R. Sharma, Shiv Ranjan Kumar
The current work examines the role of the addition of boron on the microstructure, mechanical characteristics, and slurry erosion wear behaviour of the Fe-Cr-Ti alloy. Five distinct Fe-Cr-Ti alloy coatings were prepared, each with varying boron contents (ranging from 0% to 20% by weight), and subsequently applied to 316L steel using the HVOF method. The study encompassed an assessment of mechanical characteristics, including hardness, adhesion tensile strength, and fracture toughness, alongside an examination of slurry erosion wear behavior employing a slurry jet erosion wear tester. X-ray diffraction (XRD) analysis confirmed the emergence of Fe2Br, contributing to the enhancement in the mechanical properties. Remarkably, the addition of 5% boron resulted in a notable improvement in the hardness and adhesion tensile strength by 2.3%, and 9% respectively, but a significant improvement in fracture toughness by 45%. As the impact speed increased from 35 m/sec to 70 m/sec and the slurry concentration increased from 10 weight per cent to 20 weight per cent, and wear rate increased by 51% and 37.7%, respectively. Conversely, an elevation in the impingement angle between 30° and 60° led to a 69.5% increase in wear rate, whereas between 60° and 90°, it resulted in a reduction of 19.3%.
{"title":"Erosion wear investigation of Fe-Cr-Ti coating with varying boron content","authors":"R. Sharma, Shiv Ranjan Kumar","doi":"10.1177/09544089241258842","DOIUrl":"https://doi.org/10.1177/09544089241258842","url":null,"abstract":"The current work examines the role of the addition of boron on the microstructure, mechanical characteristics, and slurry erosion wear behaviour of the Fe-Cr-Ti alloy. Five distinct Fe-Cr-Ti alloy coatings were prepared, each with varying boron contents (ranging from 0% to 20% by weight), and subsequently applied to 316L steel using the HVOF method. The study encompassed an assessment of mechanical characteristics, including hardness, adhesion tensile strength, and fracture toughness, alongside an examination of slurry erosion wear behavior employing a slurry jet erosion wear tester. X-ray diffraction (XRD) analysis confirmed the emergence of Fe2Br, contributing to the enhancement in the mechanical properties. Remarkably, the addition of 5% boron resulted in a notable improvement in the hardness and adhesion tensile strength by 2.3%, and 9% respectively, but a significant improvement in fracture toughness by 45%. As the impact speed increased from 35 m/sec to 70 m/sec and the slurry concentration increased from 10 weight per cent to 20 weight per cent, and wear rate increased by 51% and 37.7%, respectively. Conversely, an elevation in the impingement angle between 30° and 60° led to a 69.5% increase in wear rate, whereas between 60° and 90°, it resulted in a reduction of 19.3%.","PeriodicalId":506108,"journal":{"name":"Proceedings of the Institution of Mechanical Engineers, Part E: Journal of Process Mechanical Engineering","volume":" 5","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-06-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141371435","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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