Pub Date : 2024-04-27DOI: 10.1177/07316844241248236
N. Karthikeyan, Jesuarockiam Naveen
Among the myriad joining techniques, the adhesive bonding technique is widely used to join complex large-scale composite structures because of its numerous advantages compared to traditional joining techniques. This article profusely analysed the various techniques for ameliorating the performance of composite joints, such as bonding methods (secondary bonding, co-bonding, co-curing, and multi-material bonding), surface modification techniques (plasma, laser surface treatment, surface grinding, etc.), additional reinforcement techniques (Z pin, wire mesh, nanofiller, etc), and different joint geometries (stepped joints, half-stepped joints, balanced joints, and scarf joints). Also, the effect of various adhesives and fabrication techniques on the static and dynamic performance of CFRP and GFRP-based joints was studied in detail. Moreover, this review addresses the finite element modelling and optimisation techniques on adhesively bonded joints. It has been observed that the bonding methods, surface modification to enhance the roughness of the adherend, addition of nanofillers, and variations in joint geometry greatly influence the shear strength, fracture toughness, fatigue, and vibration behaviour of FRP composite joints.
{"title":"Progress in adhesive-bonded composite joints: A comprehensive review","authors":"N. Karthikeyan, Jesuarockiam Naveen","doi":"10.1177/07316844241248236","DOIUrl":"https://doi.org/10.1177/07316844241248236","url":null,"abstract":"Among the myriad joining techniques, the adhesive bonding technique is widely used to join complex large-scale composite structures because of its numerous advantages compared to traditional joining techniques. This article profusely analysed the various techniques for ameliorating the performance of composite joints, such as bonding methods (secondary bonding, co-bonding, co-curing, and multi-material bonding), surface modification techniques (plasma, laser surface treatment, surface grinding, etc.), additional reinforcement techniques (Z pin, wire mesh, nanofiller, etc), and different joint geometries (stepped joints, half-stepped joints, balanced joints, and scarf joints). Also, the effect of various adhesives and fabrication techniques on the static and dynamic performance of CFRP and GFRP-based joints was studied in detail. Moreover, this review addresses the finite element modelling and optimisation techniques on adhesively bonded joints. It has been observed that the bonding methods, surface modification to enhance the roughness of the adherend, addition of nanofillers, and variations in joint geometry greatly influence the shear strength, fracture toughness, fatigue, and vibration behaviour of FRP composite joints.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"71 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-04-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140808990","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-26DOI: 10.1177/07316844241242877
Chengrui Di, Bo Zhu, Tao Huang, Jianshun Feng, Yanbin Zhao, Kun Qiao
The epoxy/acid anhydride system was toughened with a homogeneous solution of surface-treated nano-SiO2 and polyethylene glycol (PEG), which satisfies the specific requirements of wet winding processes and effectively enhances the performance of resin and carbon fiber composites at ultra-low temperatures (108K). The results show that when the uniform solution formed by 1 phr SiO2 and 10 phr PEG is added, the tensile strength and elongation at break of the modified resin were increased by 21.4% and 16.1%, respectively, at room temperature. At 108K, the strength and modulus of the modified resin were increased, and the elongation at break was 2.8%. The fracture morphology was analyzed and compared at both room temperature and ultra-low temperature, verifying the relationship between material structure and properties across different temperatures. These findings offer both theoretical and empirical backing for the development of ultra-low temperature carbon fiber composite gas storage tanks.
{"title":"Cryogenic properties of PEG/nano-SiO2 co-toughened winding resin and its carbon fiber-reinforced composites","authors":"Chengrui Di, Bo Zhu, Tao Huang, Jianshun Feng, Yanbin Zhao, Kun Qiao","doi":"10.1177/07316844241242877","DOIUrl":"https://doi.org/10.1177/07316844241242877","url":null,"abstract":"The epoxy/acid anhydride system was toughened with a homogeneous solution of surface-treated nano-SiO<jats:sub>2</jats:sub> and polyethylene glycol (PEG), which satisfies the specific requirements of wet winding processes and effectively enhances the performance of resin and carbon fiber composites at ultra-low temperatures (108K). The results show that when the uniform solution formed by 1 phr SiO<jats:sub>2</jats:sub> and 10 phr PEG is added, the tensile strength and elongation at break of the modified resin were increased by 21.4% and 16.1%, respectively, at room temperature. At 108K, the strength and modulus of the modified resin were increased, and the elongation at break was 2.8%. The fracture morphology was analyzed and compared at both room temperature and ultra-low temperature, verifying the relationship between material structure and properties across different temperatures. These findings offer both theoretical and empirical backing for the development of ultra-low temperature carbon fiber composite gas storage tanks.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"69 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140806121","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
The present study investigates the critical bond characteristics between glass fiber-reinforced polymer (GFRP) bars, which is essential for the application bars as corrosion-resistant components in structural concrete. The interfacial bond deterioration and stress transfer mechanisms have been investigated in the present study by employing acoustic emission (AE) monitoring in hinged-type GFRP-reinforced concrete (GFRP-RC) beam specimens. The bond strength of the test specimens, governed by chemical adhesion, mechanical interlocking, and frictional resistance, has been intricately examined. Various AE signal parameters as well as historic and severity indices derived from the AE signal parameters have been meticulously evaluated and correlated with bond stress and rebar slip variations. The present study has also introduced an innovative approach of using the sentry function for the assessment of bond deterioration and associated mechanisms. The results of the present study demonstrate the reliability of AE parameters in monitoring debonding and bond strength variation, the effectiveness of the sentry function in evaluating damage progression, and the utility of historic and severity indices in capturing micro-mechanism transformations. The accurate localization of debonding and the qualitative distribution of bond stress have also been demonstrated by through correlations between cumulative AE parameters and rebar slip, Additionally, the present study also highlights the significance of peak frequency variations in AE signals, serving as a crucial tool for quantifying the mechanical interlocking and interfacial friction. The results contribute significantly to precise assessments and development of effective strategies for mitigating bond deterioration in GFRP-RC elements.
{"title":"Comprehensive analysis of bond stress transfer mechanisms in glass fiber-reinforced polymer-reinforced concrete beams using acoustic emission monitoring","authors":"Amer Iliyas Rather, Sauvik Banerjee, Arghadeep Laskar","doi":"10.1177/07316844241248714","DOIUrl":"https://doi.org/10.1177/07316844241248714","url":null,"abstract":"The present study investigates the critical bond characteristics between glass fiber-reinforced polymer (GFRP) bars, which is essential for the application bars as corrosion-resistant components in structural concrete. The interfacial bond deterioration and stress transfer mechanisms have been investigated in the present study by employing acoustic emission (AE) monitoring in hinged-type GFRP-reinforced concrete (GFRP-RC) beam specimens. The bond strength of the test specimens, governed by chemical adhesion, mechanical interlocking, and frictional resistance, has been intricately examined. Various AE signal parameters as well as historic and severity indices derived from the AE signal parameters have been meticulously evaluated and correlated with bond stress and rebar slip variations. The present study has also introduced an innovative approach of using the sentry function for the assessment of bond deterioration and associated mechanisms. The results of the present study demonstrate the reliability of AE parameters in monitoring debonding and bond strength variation, the effectiveness of the sentry function in evaluating damage progression, and the utility of historic and severity indices in capturing micro-mechanism transformations. The accurate localization of debonding and the qualitative distribution of bond stress have also been demonstrated by through correlations between cumulative AE parameters and rebar slip, Additionally, the present study also highlights the significance of peak frequency variations in AE signals, serving as a crucial tool for quantifying the mechanical interlocking and interfacial friction. The results contribute significantly to precise assessments and development of effective strategies for mitigating bond deterioration in GFRP-RC elements.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"10 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-04-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140805446","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-18DOI: 10.1177/07316844241248510
Kaifei Ding, Wei Li, Yuxuan Wang, Yuxuan Yang, Mingwei Zhu, Lu Zhang, Hongmei Li, Shaowei Lu
With the wide application of structural adhesives in the aerospace field, the structural adhesive films with only bonding property have not met the current needs. The structural-functional integrated adhesive films have become the current study hotspot. In this paper, an epoxy-based electromagnetic wave-absorbing adhesive film was prepared by adding the magnetite/SWCNTs as the absorbing agent to the epoxy adhesive. And then, it was subjected to hygrothermal aging for 1500h at 70°C and 90% RH. The results show that the absorbing filler was uniformly dispersed in the epoxy resin matrix. The reflection loss (RL) peak of the magnetite/SWCNTs/epoxy adhesive film reached −27.5 dB at the frequency of 8.75 GHz when the absorbing agent content was 20 wt%. The effective bandwidth was 3 GHz with 25 wt% absorbent content. Moreover, after 1000h of hygrothermal aging, the lap shear strength of the magnetite/SWCNTs/epoxy adhesive film decreased by 19.6%, indicating that it can perform excellent service under hygrothermal conditions.
{"title":"Study on the preparation of an epoxy-based electromagnetic wave-absorbing adhesive film and its hygrothermal aging","authors":"Kaifei Ding, Wei Li, Yuxuan Wang, Yuxuan Yang, Mingwei Zhu, Lu Zhang, Hongmei Li, Shaowei Lu","doi":"10.1177/07316844241248510","DOIUrl":"https://doi.org/10.1177/07316844241248510","url":null,"abstract":"With the wide application of structural adhesives in the aerospace field, the structural adhesive films with only bonding property have not met the current needs. The structural-functional integrated adhesive films have become the current study hotspot. In this paper, an epoxy-based electromagnetic wave-absorbing adhesive film was prepared by adding the magnetite/SWCNTs as the absorbing agent to the epoxy adhesive. And then, it was subjected to hygrothermal aging for 1500h at 70°C and 90% RH. The results show that the absorbing filler was uniformly dispersed in the epoxy resin matrix. The reflection loss (RL) peak of the magnetite/SWCNTs/epoxy adhesive film reached −27.5 dB at the frequency of 8.75 GHz when the absorbing agent content was 20 wt%. The effective bandwidth was 3 GHz with 25 wt% absorbent content. Moreover, after 1000h of hygrothermal aging, the lap shear strength of the magnetite/SWCNTs/epoxy adhesive film decreased by 19.6%, indicating that it can perform excellent service under hygrothermal conditions.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"77 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140623818","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-18DOI: 10.1177/07316844241247897
B. S. Sindu, Saptarshi Sasmal
This study has attempted to investigate the influence of major environmental degradation factors for offshore and coastal structures, such as moisture and salinity, on epoxy-based bonded composite systems and to identify the means of degradation of the same. Exhaustive experimental investigations have been carried out with different salinity levels (0%, 2.5% and 5%) and exposure periods (45 days to longer time periods (>1 year)) to determine the influence of the same on the mechanical property degradation of epoxy polymers. The effect of degraded properties on the performance degradation of bonded epoxy composite systems in terms of damage pattern and load-carrying capacity has been investigated using numerical simulations with non-linear material models and traction-separation interface behaviour. Further, it is also attempted to fundamentally engineer the epoxy polymers using nanosilica to improve their mechanical properties and environmental resistance. Finally, diffusion tests have been performed on the plain and nanoengineered epoxy polymers to understand the change in diffusion mechanisms due to nanoengineering, and a correlation has been established between the diffusion behaviour and the mechanical property degradation. The findings of this study will lead towards the development of stronger and more durable epoxy-bonded composite systems for marine applications.
{"title":"Influence of moisture and salinity on property degradation of nano-engineered epoxy polymers for offshore applications","authors":"B. S. Sindu, Saptarshi Sasmal","doi":"10.1177/07316844241247897","DOIUrl":"https://doi.org/10.1177/07316844241247897","url":null,"abstract":"This study has attempted to investigate the influence of major environmental degradation factors for offshore and coastal structures, such as moisture and salinity, on epoxy-based bonded composite systems and to identify the means of degradation of the same. Exhaustive experimental investigations have been carried out with different salinity levels (0%, 2.5% and 5%) and exposure periods (45 days to longer time periods (>1 year)) to determine the influence of the same on the mechanical property degradation of epoxy polymers. The effect of degraded properties on the performance degradation of bonded epoxy composite systems in terms of damage pattern and load-carrying capacity has been investigated using numerical simulations with non-linear material models and traction-separation interface behaviour. Further, it is also attempted to fundamentally engineer the epoxy polymers using nanosilica to improve their mechanical properties and environmental resistance. Finally, diffusion tests have been performed on the plain and nanoengineered epoxy polymers to understand the change in diffusion mechanisms due to nanoengineering, and a correlation has been established between the diffusion behaviour and the mechanical property degradation. The findings of this study will lead towards the development of stronger and more durable epoxy-bonded composite systems for marine applications.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"38 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140624017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-18DOI: 10.1177/07316844241248508
Behzad Najafloo, Amir Masood Rezadoust, Masoud Latifi
This study presents a process development and mechanical characterization for through-the-thickness yarns (TTYs) incorporated into continuous fiber-reinforced thermoset composites (CFTCs) using a 3D printing system with photopolymer curing technology. Two types of CFTCs were prepared with different ply orientations and placement of TTYs. The mechanical properties of the samples were evaluated through three-point flexural strength tests and numerical simulations. The experimental and numerical results exhibited acceptable agreement up to the first peak of the reaction force. The presence of TTYs reduced the maximum stress and altered the failure mechanisms, while improving resistance to delamination cracking. The energyabsorption capacity of the samples with TTYs was increased by 23% to 53%. However, the flexural strength of the samples decreased by 14% to 23% with the incorporation of TTYs due to the formation of small sections with low fiber content around TTYs and the concentration of von Mises stress.
{"title":"Z-printing of continuous fiber-reinforced thermoset composites: The process development, and mechanical properties evaluation","authors":"Behzad Najafloo, Amir Masood Rezadoust, Masoud Latifi","doi":"10.1177/07316844241248508","DOIUrl":"https://doi.org/10.1177/07316844241248508","url":null,"abstract":"This study presents a process development and mechanical characterization for through-the-thickness yarns (TTYs) incorporated into continuous fiber-reinforced thermoset composites (CFTCs) using a 3D printing system with photopolymer curing technology. Two types of CFTCs were prepared with different ply orientations and placement of TTYs. The mechanical properties of the samples were evaluated through three-point flexural strength tests and numerical simulations. The experimental and numerical results exhibited acceptable agreement up to the first peak of the reaction force. The presence of TTYs reduced the maximum stress and altered the failure mechanisms, while improving resistance to delamination cracking. The energyabsorption capacity of the samples with TTYs was increased by 23% to 53%. However, the flexural strength of the samples decreased by 14% to 23% with the incorporation of TTYs due to the formation of small sections with low fiber content around TTYs and the concentration of von Mises stress.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"33 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-04-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140625765","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-17DOI: 10.1177/07316844241248234
Weiwei Li, Wenhu Song, Shiting Li, Xiaoyu Wang
Poor interfacial force is an important factor in preventing the development of fibers reinforced polymer composites. Fiber morphology design is an effective way to improve the interfacial property of composites. The development of nature has carried out the natural selection of survival of the fittest for organisms, and most of the surviving organisms have excellent structures and functions, which comes up with a new idea for the design of new reinforcement structure. Inspired by the cactus structure, we have prepared a new structural UHMWPE fiber reinforcement, which was characterized by a mass of cactus-like ZnO (C-ZnO) crystals decorated the UHMWPE fiber surface. The experimental results showed that the strength and toughness of C-ZnO UHMWPE fibers reinforced rigid polyurethane (RPU) composites were significantly improved. The satisfactory results were attributed to the cactus-like ZnO on the UHMWPE fiber surface, which could form a complex interfacial structure with the PRU matrix to increase the interface strength and the crack expansion paths.
{"title":"Cactus-like ZnO decorated UHMWPE fibers to improve the strength and toughness of polyurethane matrix composites","authors":"Weiwei Li, Wenhu Song, Shiting Li, Xiaoyu Wang","doi":"10.1177/07316844241248234","DOIUrl":"https://doi.org/10.1177/07316844241248234","url":null,"abstract":"Poor interfacial force is an important factor in preventing the development of fibers reinforced polymer composites. Fiber morphology design is an effective way to improve the interfacial property of composites. The development of nature has carried out the natural selection of survival of the fittest for organisms, and most of the surviving organisms have excellent structures and functions, which comes up with a new idea for the design of new reinforcement structure. Inspired by the cactus structure, we have prepared a new structural UHMWPE fiber reinforcement, which was characterized by a mass of cactus-like ZnO (C-ZnO) crystals decorated the UHMWPE fiber surface. The experimental results showed that the strength and toughness of C-ZnO UHMWPE fibers reinforced rigid polyurethane (RPU) composites were significantly improved. The satisfactory results were attributed to the cactus-like ZnO on the UHMWPE fiber surface, which could form a complex interfacial structure with the PRU matrix to increase the interface strength and the crack expansion paths.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"48 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140614810","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-17DOI: 10.1177/07316844241247896
Dongyang Cao
Synthetic-fiber-reinforced thermoset composites pose a significant threat of environmental pollution owing to their nonbiodegradable nature. To address this issue, it is essential to establish an adequate recycling strategy to reduce composite waste. In this study, we prepared flax-fiber-reinforced thermoplastic composites and modified a liquid thermoplastic resin (Elium 188 O) with recycled thermoset composite fillers. The introduction of 15% silane-treated fillers into the polymer matrix resulted in a substantial increase in the energy release rate and fracture toughness at the fracture initiation stage in modes I and II. Specifically, compared with the unmodified matrix, the energy release rate and fracture toughness were enhanced by 44.8% and 42.8% (for mode I) and 40.5% and 85.4% (for mode II), respectively. Similarly, the flexural strength and modulus increased by 25.1% and 34.8%, respectively. Furthermore, the mechanical properties of thermoplastic composites will deteriorate significantly because of the low bonding strength between virgin and recycled materials. However, the flax-fiber-reinforced composites with a 15% silane-treated filler-modified polymer matrix maintained Young’s modulus and tensile strength of 89.9% and 91.2%, respectively, after 20 cycles of recycling. Overall, the strategy of inducing chemical-treated powdered composite wastes is a sufficient and low-labor-cost method to mitigate environmental pollution and improve the sustainability of recycled composite structures.
{"title":"Mechanical enhancement of natural-fiber-reinforced composites modified with recycled thermoset composite fillers","authors":"Dongyang Cao","doi":"10.1177/07316844241247896","DOIUrl":"https://doi.org/10.1177/07316844241247896","url":null,"abstract":"Synthetic-fiber-reinforced thermoset composites pose a significant threat of environmental pollution owing to their nonbiodegradable nature. To address this issue, it is essential to establish an adequate recycling strategy to reduce composite waste. In this study, we prepared flax-fiber-reinforced thermoplastic composites and modified a liquid thermoplastic resin (Elium 188 O) with recycled thermoset composite fillers. The introduction of 15% silane-treated fillers into the polymer matrix resulted in a substantial increase in the energy release rate and fracture toughness at the fracture initiation stage in modes I and II. Specifically, compared with the unmodified matrix, the energy release rate and fracture toughness were enhanced by 44.8% and 42.8% (for mode I) and 40.5% and 85.4% (for mode II), respectively. Similarly, the flexural strength and modulus increased by 25.1% and 34.8%, respectively. Furthermore, the mechanical properties of thermoplastic composites will deteriorate significantly because of the low bonding strength between virgin and recycled materials. However, the flax-fiber-reinforced composites with a 15% silane-treated filler-modified polymer matrix maintained Young’s modulus and tensile strength of 89.9% and 91.2%, respectively, after 20 cycles of recycling. Overall, the strategy of inducing chemical-treated powdered composite wastes is a sufficient and low-labor-cost method to mitigate environmental pollution and improve the sustainability of recycled composite structures.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"304 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140614815","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-17DOI: 10.1177/07316844241247901
Daouda Nikiema, Pascale Balland, Alain Sergent
The lightweighting of 3D-printed components is achievable by using infill patterns and the ability to adjust their density. In this context, performing a mechanical characterization and numerical simulation of the printed parts is imperative. This manuscript conducts experimental and numerical investigations on 3D-printed composites (onyx/glass fibers) that consider the infill pattern, walls, roofs, and floors of the samples. A numerical homogenization approach was adopted to identify the elastic mechanical parameters of the infill patterns. The results demonstrated the homogenization tool’s effectiveness in predicting the mechanical parameters of the infill patterns. Relationships correlating the infill density and each homogenized mechanical parameter were established, enabling the calculation of each mechanical parameter based on the used infill pattern and its density without reiterating the mechanical homogenization. Regarding the simulation of specimens under tension and flexure, the results indicated that the prediction error of the elastic modulus ranged between 2.87% and 11.84% for tension and between 4.42% and 8.45% for 3-point bending. The simulation of 3D-printed composites, considering all constituent elements of the specimens, allowed for examining stress fields in each element and identifying areas of highest and lowest stress. These findings can contribute to predicting the behavior of 3D-printed composites in the context of addressing engineering problems.
通过使用填充图案并调整其密度，可以实现 3D 打印部件的轻量化。在这种情况下，对打印部件进行机械表征和数值模拟势在必行。本手稿对 3D 打印复合材料（缟玛瑙/玻璃纤维）进行了实验和数值研究，考虑了样品的填充模式、墙壁、屋顶和地板。采用数值均质化方法确定了填充图案的弹性力学参数。结果表明，均质工具在预测填充图案的力学参数方面非常有效。建立了填充密度与各均质化力学参数之间的相关关系，从而能够根据所使用的填充图案及其密度计算各力学参数，而无需重复进行力学均质化。关于拉伸和弯曲试样的模拟，结果表明，拉伸的弹性模量预测误差在 2.87% 到 11.84% 之间，三点弯曲的弹性模量预测误差在 4.42% 到 8.45% 之间。考虑到试样的所有组成元素，对 3D 打印复合材料进行模拟，可以检查每个元素中的应力场，并确定应力最大和最小的区域。这些发现有助于在解决工程问题的背景下预测 3D 打印复合材料的行为。
{"title":"Experimental and numerical investigations of 3D-printed glass fiber reinforced onyx composites with infill patterns","authors":"Daouda Nikiema, Pascale Balland, Alain Sergent","doi":"10.1177/07316844241247901","DOIUrl":"https://doi.org/10.1177/07316844241247901","url":null,"abstract":"The lightweighting of 3D-printed components is achievable by using infill patterns and the ability to adjust their density. In this context, performing a mechanical characterization and numerical simulation of the printed parts is imperative. This manuscript conducts experimental and numerical investigations on 3D-printed composites (onyx/glass fibers) that consider the infill pattern, walls, roofs, and floors of the samples. A numerical homogenization approach was adopted to identify the elastic mechanical parameters of the infill patterns. The results demonstrated the homogenization tool’s effectiveness in predicting the mechanical parameters of the infill patterns. Relationships correlating the infill density and each homogenized mechanical parameter were established, enabling the calculation of each mechanical parameter based on the used infill pattern and its density without reiterating the mechanical homogenization. Regarding the simulation of specimens under tension and flexure, the results indicated that the prediction error of the elastic modulus ranged between 2.87% and 11.84% for tension and between 4.42% and 8.45% for 3-point bending. The simulation of 3D-printed composites, considering all constituent elements of the specimens, allowed for examining stress fields in each element and identifying areas of highest and lowest stress. These findings can contribute to predicting the behavior of 3D-printed composites in the context of addressing engineering problems.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"32 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140617622","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2024-04-16DOI: 10.1177/07316844241247888
Zhigang Li, Andi Wu, Jinghao Yang, Minghui Wang, Hai Deng, Chao Wang
Natural fibers have both environmentally friendly and ecological advantages in the fiber material industry. Improving the mechanical properties and durability of natural fiber composites is an important research approach. As one of the representatives of synthetic fibers, carbon fiber has excellent mechanical properties and chemical stability, but its high cost and low toughness limit further application. Combining environmentally friendly, low-cost natural fibers with carbon fibers can broaden the development of natural fiber-reinforced composites in industrial applications. In this paper, the composites made of jute fibers and polypropylene (PP) as well as carbon fibers coupled with KH550 modification were prepared and their properties were investigated. By introducing a macroscopic model similar to the core-shell structure, an environmentally friendly material with better mechanical properties was achieved, with carbon fiber woven fabric serving as the shell and jute fiber mat as the core. The results show that a low-cost hybrid composite was successfully prepared by using a small amount of carbon fiber woven fabric instead of jute fiber mat, and the tensile, flexural and impact properties of the composites were improved by 488.27%, 70.75% and 463.39%, respectively, compared with those of the pure jute fibers composites. This study provides a rapid and reliable approach to improve the mechanical properties of the natural fiber composites.
{"title":"Mechanical properties and design of hybrid composites of carbon and jute fibers with polypropylene","authors":"Zhigang Li, Andi Wu, Jinghao Yang, Minghui Wang, Hai Deng, Chao Wang","doi":"10.1177/07316844241247888","DOIUrl":"https://doi.org/10.1177/07316844241247888","url":null,"abstract":"Natural fibers have both environmentally friendly and ecological advantages in the fiber material industry. Improving the mechanical properties and durability of natural fiber composites is an important research approach. As one of the representatives of synthetic fibers, carbon fiber has excellent mechanical properties and chemical stability, but its high cost and low toughness limit further application. Combining environmentally friendly, low-cost natural fibers with carbon fibers can broaden the development of natural fiber-reinforced composites in industrial applications. In this paper, the composites made of jute fibers and polypropylene (PP) as well as carbon fibers coupled with KH550 modification were prepared and their properties were investigated. By introducing a macroscopic model similar to the core-shell structure, an environmentally friendly material with better mechanical properties was achieved, with carbon fiber woven fabric serving as the shell and jute fiber mat as the core. The results show that a low-cost hybrid composite was successfully prepared by using a small amount of carbon fiber woven fabric instead of jute fiber mat, and the tensile, flexural and impact properties of the composites were improved by 488.27%, 70.75% and 463.39%, respectively, compared with those of the pure jute fibers composites. This study provides a rapid and reliable approach to improve the mechanical properties of the natural fiber composites.","PeriodicalId":16943,"journal":{"name":"Journal of Reinforced Plastics and Composites","volume":"48 1","pages":""},"PeriodicalIF":3.1,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140614850","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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