B. Dong, Tingping Hou, Peter Hodgson, O. Isayev, O. Hress, S. Yershov, Kaiming Wu
Abstract The elongation of two low temperature bainitic steels with different sulfur contents was compared under the same heat treatment. Elongations of 1.0 ± 0.5 % and 11.4 ± 1.5 % were achieved for the high- and low-S steels, respectively. A high carbon concentration and fine grain size leading to over stability of the retained austenite in the high-S steel is the main reason for the poor elongation. The differences in carbon concentration and grain size between the two steels can be attributed to pinning by MnS, where the existence of a large number of long slivers of MnS in the high-S steel was responsible for the pinning. The stability of retained austenite was also analyzed by the local tensile elongation and hardness, and the volume fraction of retained austenite that transformed to martensite during the tensile process.
{"title":"Factors dictating the extent of low elongation in high sulfur-containing bainitic steels","authors":"B. Dong, Tingping Hou, Peter Hodgson, O. Isayev, O. Hress, S. Yershov, Kaiming Wu","doi":"10.1515/ijmr-2022-0078","DOIUrl":"https://doi.org/10.1515/ijmr-2022-0078","url":null,"abstract":"Abstract The elongation of two low temperature bainitic steels with different sulfur contents was compared under the same heat treatment. Elongations of 1.0 ± 0.5 % and 11.4 ± 1.5 % were achieved for the high- and low-S steels, respectively. A high carbon concentration and fine grain size leading to over stability of the retained austenite in the high-S steel is the main reason for the poor elongation. The differences in carbon concentration and grain size between the two steels can be attributed to pinning by MnS, where the existence of a large number of long slivers of MnS in the high-S steel was responsible for the pinning. The stability of retained austenite was also analyzed by the local tensile elongation and hardness, and the volume fraction of retained austenite that transformed to martensite during the tensile process.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"4 4","pages":"1080 - 1087"},"PeriodicalIF":0.8,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139262773","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The phase relations of the Fe–Pt–Ho ternary system at 500 °C have been studied by using X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy techniques. The Ho3Pt4 phase is stable at 500 °C, and the introduction of Fe does not cause the Ho3Pt4 phase to be decomposed into the two neighbouring phases HoPt and HoPt2. The single phase ranges of α-Fe, Fe3Pt, FePt, FePt3 and Pt in Fe–Pt binary system are from 0 to 10 at.% Pt, 14 to 32 at.% Pt, 33 to 63 at.% Pt, 66 to 78 at.% Pt, and 82 to 100 at.% Pt, respectively. The highest solid solubility of Ho in the α-Fe, Fe3Pt, FePt, FePt3 and (Pt, Fe) phases is less than 1.5 at.% Ho, 2 at.% Ho, 2 at.% Ho, 1.5 at.% Ho and 1.5 at.% Ho, respectively. The isothermal section at 500 °C of the Fe–Pt–Ho ternary alloy phase diagram has been constructed, which consists of 19 single-phase regions, 35 two-phase regions and 17 three-phase regions. No new ternary compounds were found.
{"title":"Experimental study of the phase relations of the Fe–Pt–Ho ternary system at 500 °C","authors":"Ling Peng, YiFan Zhou, Bo Xu, Xinqiang Gao, Zheng-Fei Gu, Cheng-Fu Xu","doi":"10.1515/ijmr-2022-0437","DOIUrl":"https://doi.org/10.1515/ijmr-2022-0437","url":null,"abstract":"Abstract The phase relations of the Fe–Pt–Ho ternary system at 500 °C have been studied by using X-ray diffraction, scanning electron microscopy and energy dispersive spectroscopy techniques. The Ho3Pt4 phase is stable at 500 °C, and the introduction of Fe does not cause the Ho3Pt4 phase to be decomposed into the two neighbouring phases HoPt and HoPt2. The single phase ranges of α-Fe, Fe3Pt, FePt, FePt3 and Pt in Fe–Pt binary system are from 0 to 10 at.% Pt, 14 to 32 at.% Pt, 33 to 63 at.% Pt, 66 to 78 at.% Pt, and 82 to 100 at.% Pt, respectively. The highest solid solubility of Ho in the α-Fe, Fe3Pt, FePt, FePt3 and (Pt, Fe) phases is less than 1.5 at.% Ho, 2 at.% Ho, 2 at.% Ho, 1.5 at.% Ho and 1.5 at.% Ho, respectively. The isothermal section at 500 °C of the Fe–Pt–Ho ternary alloy phase diagram has been constructed, which consists of 19 single-phase regions, 35 two-phase regions and 17 three-phase regions. No new ternary compounds were found.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"8 1","pages":"1111 - 1121"},"PeriodicalIF":0.8,"publicationDate":"2023-11-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139263720","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Jinming Liu, Xiaolong Huang, Quan Du, Lingyu Ouyang, Jian Xiao, Yong Li
Abstract The CALPHAD (CAlculation of PHAse Diagrams) technique is used in the critical remodeling of the Cd–Ce system. On the basis of new experimental data in the literature, the excess Gibbs energies of the solution phase expression (liquid, bcc, fcc, and hcp_A3) are described using the Redlich–Kister equation. Four compounds (Cd3Ce, Cd6Ce, Cd11Ce, and Cd17Ce2) are treated as stochiometric compounds. Two intermetallic compounds (Cd2Ce and Cd58Ce13), which exhibit a little homogeneity range, are treated as a two-sublattice model. Two thermodynamic models are used for the CdCe and bcc. Model I is to model the compound CdCe and bcc-Ce separately. Model II is to use the formula (Cd, Ce)0.5(Cd, Ce)0.5(Va)3 to describe the compound CdCe with a CsCl-type structure (B2) and cope with the disorder–order transition from bcc-A2 to bcc-B2. The present work shows that four eutectic reactions, three peritectic reactions, two eutectoid reactions, one peritectoid transformation and three congruent reactions are observed, and the stoichiometric compound Cd17Ce2 is only stable from 804 to 882 °C in the Cd–Ce system.
{"title":"Critical systematic investigation of the Cd–Ce system: phase stability and Gibbs energies of formation and equilibria via thermodynamic description","authors":"Jinming Liu, Xiaolong Huang, Quan Du, Lingyu Ouyang, Jian Xiao, Yong Li","doi":"10.1515/ijmr-2021-8214","DOIUrl":"https://doi.org/10.1515/ijmr-2021-8214","url":null,"abstract":"Abstract The CALPHAD (CAlculation of PHAse Diagrams) technique is used in the critical remodeling of the Cd–Ce system. On the basis of new experimental data in the literature, the excess Gibbs energies of the solution phase expression (liquid, bcc, fcc, and hcp_A3) are described using the Redlich–Kister equation. Four compounds (Cd3Ce, Cd6Ce, Cd11Ce, and Cd17Ce2) are treated as stochiometric compounds. Two intermetallic compounds (Cd2Ce and Cd58Ce13), which exhibit a little homogeneity range, are treated as a two-sublattice model. Two thermodynamic models are used for the CdCe and bcc. Model I is to model the compound CdCe and bcc-Ce separately. Model II is to use the formula (Cd, Ce)0.5(Cd, Ce)0.5(Va)3 to describe the compound CdCe with a CsCl-type structure (B2) and cope with the disorder–order transition from bcc-A2 to bcc-B2. The present work shows that four eutectic reactions, three peritectic reactions, two eutectoid reactions, one peritectoid transformation and three congruent reactions are observed, and the stoichiometric compound Cd17Ce2 is only stable from 804 to 882 °C in the Cd–Ce system.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"57 18","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135091949","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract NiCr coatings were prepared on H13 steel by laser cladding with different laser power. The microstructure and phases of the obtained coatings were analyzed using a super depth of field microscope and X-ray diffraction, respectively, and the effect of laser power on the friction–wear performance at high-temperature was investigated using a friction tester. The results show that the laser clad NiCr coatings fabricated at the different laser powers are composed of Cr 2 Ni 3 and FeNi 3 phases, and the porosity is decreased from 1.28 % to 0.48 % with the increase of laser power. The average coefficients of friction of NiCr coatings are decreased with the increase of laser power, and the wear rate of NiCr coating fabricated at the laser power of 1400 W power is the lowest among the three kinds of coatings, showing that the suitable laser power can improve the surface quality and wear resistance of NiCr coating.
摘要采用不同激光功率的激光熔覆方法在H13钢表面制备了NiCr涂层。利用超景深显微镜和x射线衍射分析了涂层的显微组织和物相，并利用摩擦试验机研究了激光功率对涂层高温摩擦磨损性能的影响。结果表明:在不同激光功率下制备的激光熔覆NiCr涂层主要由Cr 2 Ni 3和FeNi 3相组成，孔隙率随激光功率的增加从1.28%降低到0.48%;NiCr涂层的平均摩擦系数随激光功率的增加而减小，在1400 W激光功率下制备的NiCr涂层的磨损率最低，说明适当的激光功率可以改善NiCr涂层的表面质量和耐磨性。
{"title":"Effect of laser power on microstructure and tribological behavior of laser clad NiCr coating","authors":"Sun Chengwen, Li Wei, Kong Dejun","doi":"10.1515/ijmr-2022-0498","DOIUrl":"https://doi.org/10.1515/ijmr-2022-0498","url":null,"abstract":"Abstract NiCr coatings were prepared on H13 steel by laser cladding with different laser power. The microstructure and phases of the obtained coatings were analyzed using a super depth of field microscope and X-ray diffraction, respectively, and the effect of laser power on the friction–wear performance at high-temperature was investigated using a friction tester. The results show that the laser clad NiCr coatings fabricated at the different laser powers are composed of Cr 2 Ni 3 and FeNi 3 phases, and the porosity is decreased from 1.28 % to 0.48 % with the increase of laser power. The average coefficients of friction of NiCr coatings are decreased with the increase of laser power, and the wear rate of NiCr coating fabricated at the laser power of 1400 W power is the lowest among the three kinds of coatings, showing that the suitable laser power can improve the surface quality and wear resistance of NiCr coating.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":" 26","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135191992","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"DGM – Deutsche Gesellschaft für Materialkunde","authors":"","doi":"10.1515/ijmr-2023-2012","DOIUrl":"https://doi.org/10.1515/ijmr-2023-2012","url":null,"abstract":"","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"5 4","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-11-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135431230","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract The welding fixture greatly impacts the weld quality matrixes. In this work, the welding fixture for ultrasonic-assisted gas tungsten arc welding to reduce the hot cracking behaviour in weldments was designed using the finite element analysis approach. A three-level, five-factor central composite design-based response surface methodology analysis was followed to vary the dimensions of the fixture for the modal and harmonic analysis of the fixture using Ansys software. The optimum fixture dimensions to achieve maximum displacement amplitude and minimum von-Mises stress have been optimized using a genetic algorithm approach. The model predictions for maximum displacement amplitude and minimum von-Mises stress were compared to the experimental findings at optimal conditions. A strong consensus between the model prediction by genetic algorithm and experimental findings indicates the correctness of the developed model.
{"title":"Design of fixture for ultrasonic assisted gas tungsten arc welding using an integrated approach","authors":"Dhilip A, Jayakrishnan Nampoothiri, Anand K","doi":"10.1515/ijmr-2022-0159","DOIUrl":"https://doi.org/10.1515/ijmr-2022-0159","url":null,"abstract":"Abstract The welding fixture greatly impacts the weld quality matrixes. In this work, the welding fixture for ultrasonic-assisted gas tungsten arc welding to reduce the hot cracking behaviour in weldments was designed using the finite element analysis approach. A three-level, five-factor central composite design-based response surface methodology analysis was followed to vary the dimensions of the fixture for the modal and harmonic analysis of the fixture using Ansys software. The optimum fixture dimensions to achieve maximum displacement amplitude and minimum von-Mises stress have been optimized using a genetic algorithm approach. The model predictions for maximum displacement amplitude and minimum von-Mises stress were compared to the experimental findings at optimal conditions. A strong consensus between the model prediction by genetic algorithm and experimental findings indicates the correctness of the developed model.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135616832","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Fused filament fabrication is a promising additive manufacturing technology and an alternative to traditional processes for the fabrication of polymer and fiber-reinforced polymer composites. In this work, the effects of process parameters such as layer thickness, infill density, and infill pattern on the ageing and free vibration characteristics of three-dimensional printed composites were investigated. It was observed that the water absorption rate is higher in acrylonitrile butadiene styrene (ABS) printed specimens compared to carbon fiber reinforced acrylonitrile butadiene styrene (CF/ABS) specimens due to the effect of carbon fiber which acts as a strong hydrophobic material. The free vibration characteristic of the printed composite specimen is found as per American Society for Testing Materials standards. From the results, it is found that the 5 % addition of carbon fiber, hexagonal pattern, and 0.30 mm layer thickness show an increase in the vibration behaviour of the composites compared to the specimen printed without reinforcement. Experimental modal analysis was carried out on a cantilever beam-like sample and revealed that the addition of fiber has enhanced natural frequencies and damping ratio.
{"title":"Influence of process parameters on ageing and free vibration characteristics of fiber-reinforced polymer composites by fusion filament fabrication process","authors":"Vigneshwaran Karupaiah, Venkateshwaran Narayanan","doi":"10.1515/ijmr-2022-0271","DOIUrl":"https://doi.org/10.1515/ijmr-2022-0271","url":null,"abstract":"Abstract Fused filament fabrication is a promising additive manufacturing technology and an alternative to traditional processes for the fabrication of polymer and fiber-reinforced polymer composites. In this work, the effects of process parameters such as layer thickness, infill density, and infill pattern on the ageing and free vibration characteristics of three-dimensional printed composites were investigated. It was observed that the water absorption rate is higher in acrylonitrile butadiene styrene (ABS) printed specimens compared to carbon fiber reinforced acrylonitrile butadiene styrene (CF/ABS) specimens due to the effect of carbon fiber which acts as a strong hydrophobic material. The free vibration characteristic of the printed composite specimen is found as per American Society for Testing Materials standards. From the results, it is found that the 5 % addition of carbon fiber, hexagonal pattern, and 0.30 mm layer thickness show an increase in the vibration behaviour of the composites compared to the specimen printed without reinforcement. Experimental modal analysis was carried out on a cantilever beam-like sample and revealed that the addition of fiber has enhanced natural frequencies and damping ratio.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"37 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135607103","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract This study uses desirability function analysis to optimize the process parameters namely layer thickness, fill pattern, fill density, and build orientation for fused deposition modelling on polyethylene terephthalate glycol material. The Taguchi-desirability function analysis is one of the optimization techniques for the multi-objective decision-making process. Taguchi L 9 orthogonal array is employed in the test trials during the fused deposition modelling process. The output responses measured are dimension error, ductility, and tensile strength. The goal of process parameter optimization is to attain the best of the trials for minimal dimension error and maximum tensile strength and ductility. The best feasible amalgamation of input variables is discovered for the investigated and assessed response features utilizing desirability function analysis. As per the results obtained from experiments, it is concluded that the optimal combination of parameters is layer thickness of 0.1 mm, build orientation of 0°, fill density of 90 % and hexa fill pattern. By following this combination, the error in the dimensions was slightly increased which needed to be reduced, but both tensile strength and ductility were increased which are more desirable characteristics.
{"title":"Desirability function analysis approach for optimization of fused deposition modelling process parameters","authors":"Hariprasad Tarigonda, Koyyagura Lakshmi Kala, Peedinti Gnanaprakash, Doddipalli Raghurami Reddy, Konareddy Harsha Vardhan Reddy","doi":"10.1515/ijmr-2022-0266","DOIUrl":"https://doi.org/10.1515/ijmr-2022-0266","url":null,"abstract":"Abstract This study uses desirability function analysis to optimize the process parameters namely layer thickness, fill pattern, fill density, and build orientation for fused deposition modelling on polyethylene terephthalate glycol material. The Taguchi-desirability function analysis is one of the optimization techniques for the multi-objective decision-making process. Taguchi L 9 orthogonal array is employed in the test trials during the fused deposition modelling process. The output responses measured are dimension error, ductility, and tensile strength. The goal of process parameter optimization is to attain the best of the trials for minimal dimension error and maximum tensile strength and ductility. The best feasible amalgamation of input variables is discovered for the investigated and assessed response features utilizing desirability function analysis. As per the results obtained from experiments, it is concluded that the optimal combination of parameters is layer thickness of 0.1 mm, build orientation of 0°, fill density of 90 % and hexa fill pattern. By following this combination, the error in the dimensions was slightly increased which needed to be reduced, but both tensile strength and ductility were increased which are more desirable characteristics.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"16 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136153549","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Abstract Additive manufacturing has become a cutting-edge technique to produce biomaterials for various clinical applications. Recent investigations have shown their significance and highlighted their future requirements. Many additive manufacturing technologies are mostly related to manufacturing polyether ether ketone (PEEK) based implants. Among them, fused filament fabrication (FFF) or fused deposition modelling (FDM) is the preferred method. Specifically, FFF builds complex scaffolds for tissue engineering and customized implants, which are not achievable with traditional fabrication methods. PEEK is a rigid, tissue-compatible, lightweight polymer with good wear characteristics and a long implant life. In general, PEEK has many valuable properties and the potential to solve many medical problems, especially orthopaedic implantation. This paper provides a brief study that gives an overview of PEEK-based biomaterials for FFF-based orthopaedic procedures, materials evolution, recent advancements, and the current research progress is also addressed systematically.
{"title":"Fused filament fabricated PEEK based polymer composites for orthopaedic implants: a review","authors":"Sathishkumar Sankar, Jawahar Paulraj, Prasun Chakraborti","doi":"10.1515/ijmr-2022-0225","DOIUrl":"https://doi.org/10.1515/ijmr-2022-0225","url":null,"abstract":"Abstract Additive manufacturing has become a cutting-edge technique to produce biomaterials for various clinical applications. Recent investigations have shown their significance and highlighted their future requirements. Many additive manufacturing technologies are mostly related to manufacturing polyether ether ketone (PEEK) based implants. Among them, fused filament fabrication (FFF) or fused deposition modelling (FDM) is the preferred method. Specifically, FFF builds complex scaffolds for tissue engineering and customized implants, which are not achievable with traditional fabrication methods. PEEK is a rigid, tissue-compatible, lightweight polymer with good wear characteristics and a long implant life. In general, PEEK has many valuable properties and the potential to solve many medical problems, especially orthopaedic implantation. This paper provides a brief study that gives an overview of PEEK-based biomaterials for FFF-based orthopaedic procedures, materials evolution, recent advancements, and the current research progress is also addressed systematically.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135963827","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Sanjana S. Kumar, Rahul Kumar Sonker, Senthilkumar Rajendran
Abstract Glass fiber-reinforced plastic (GFRP) structural profiles in the construction industry are a promising alternative to conventional building materials due to their high strength-to-weight ratio, high tensile strength, insulation properties, chemical resistance, fatigue properties, and lower maintenance cost. This study aims to evaluate the compression behaviour of semi-compact and slender glass fiber-reinforced plastic I-sections. Short, intermediate, and long columns of both slender and semi-compact I-sections were subjected to axial compression, and the experimental capacity was compared to available theoretical results. It was found that the experimental capacity of short, semi-compact, and long columns were 27 %, 49 %, and 40 % lower than the theoretical capacity of semi-compact I-sections. Short slender sections had an ultimate experimental capacity 55 % greater than the theoretical results. However, lower ultimate capacities were achieved for intermediate and long columns in the case of slender sections when compared to the theoretical capacity. Slender sections were prone to both global and local buckling, whereas semi-compact sections failed by global buckling alone. The study also concludes the need for proper section classification of glass fiber-reinforced plastic sections to consider buckling characteristics. The existing theoretical equations to estimate the load-carrying capacity was found to be overly conservative; hence it is necessary to conduct numerical and parametric studies to develop equations that are more in agreement with the experimental results.
{"title":"Behaviour of glass fiber reinforced polymer (GFRP) structural profile columns under axial compression","authors":"Sanjana S. Kumar, Rahul Kumar Sonker, Senthilkumar Rajendran","doi":"10.1515/ijmr-2022-0169","DOIUrl":"https://doi.org/10.1515/ijmr-2022-0169","url":null,"abstract":"Abstract Glass fiber-reinforced plastic (GFRP) structural profiles in the construction industry are a promising alternative to conventional building materials due to their high strength-to-weight ratio, high tensile strength, insulation properties, chemical resistance, fatigue properties, and lower maintenance cost. This study aims to evaluate the compression behaviour of semi-compact and slender glass fiber-reinforced plastic I-sections. Short, intermediate, and long columns of both slender and semi-compact I-sections were subjected to axial compression, and the experimental capacity was compared to available theoretical results. It was found that the experimental capacity of short, semi-compact, and long columns were 27 %, 49 %, and 40 % lower than the theoretical capacity of semi-compact I-sections. Short slender sections had an ultimate experimental capacity 55 % greater than the theoretical results. However, lower ultimate capacities were achieved for intermediate and long columns in the case of slender sections when compared to the theoretical capacity. Slender sections were prone to both global and local buckling, whereas semi-compact sections failed by global buckling alone. The study also concludes the need for proper section classification of glass fiber-reinforced plastic sections to consider buckling characteristics. The existing theoretical equations to estimate the load-carrying capacity was found to be overly conservative; hence it is necessary to conduct numerical and parametric studies to develop equations that are more in agreement with the experimental results.","PeriodicalId":14079,"journal":{"name":"International Journal of Materials Research","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136200096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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