Andrew C. Abbott, J. Furmanski, G. P. Tandon, Hilmar Koerner, Dennis Butcher
Additive manufacturing of composite materials is a nascent technology that is being investigated for manufacturing optimized structural composite designs. By combining additive manufacturing of continuous fiber composites with topology optimization, fibers can be steered in the loading direction. Steered fibers allow for decreased weight, decreased manufacturing time, and reduced cost. Realizing the benefit of printed composites enables production of low cost unmanned vehicles at a higher rate with high specificity. Mechanical properties of printed composites, which are needed for design, are measured in this work. Composite properties were comparable to traditionally manufactured composites, especially when normalized by cured ply thickness. Transverse properties were limited by the brittleness of the photopolymer matrix. Matrix cure characteristics and thermal properties were also measured which revealed the high temperature capabilities of the matrix with a Tg of 198°C.
{"title":"Thermal and Mechanical Characterization of 3D Printed Continuous Fiber Reinforced Composites","authors":"Andrew C. Abbott, J. Furmanski, G. P. Tandon, Hilmar Koerner, Dennis Butcher","doi":"10.33599/sj.v59no6.02","DOIUrl":"https://doi.org/10.33599/sj.v59no6.02","url":null,"abstract":"Additive manufacturing of composite materials is a nascent technology that is being investigated for manufacturing optimized structural composite designs. By combining additive manufacturing of continuous fiber composites with topology optimization, fibers can be steered in the loading direction. Steered fibers allow for decreased weight, decreased manufacturing time, and reduced cost. Realizing the benefit of printed composites enables production of low cost unmanned vehicles at a higher rate with high specificity. Mechanical properties of printed composites, which are needed for design, are measured in this work. Composite properties were comparable to traditionally manufactured composites, especially when normalized by cured ply thickness. Transverse properties were limited by the brittleness of the photopolymer matrix. Matrix cure characteristics and thermal properties were also measured which revealed the high temperature capabilities of the matrix with a Tg of 198°C.","PeriodicalId":49577,"journal":{"name":"SAMPE Journal","volume":"1 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139291246","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}
N. Swingle, A. Brasington, J. Halbritter, R. Harik
Manufacturing composite structures with Automated Fiber Placement (AFP) requires detailed process planning that is rigorous and time consuming. To facilitate, accelerate and perpetuate process planning knowledge, the Computer Aided Process Planning (CAPP) tool was developed. CAPP assists process planners in identifying optimal layup strategies for each ply of a laminate. This paper expands the established framework for analyzing defect stack-up through thickness of a laminate. Four different combinatorial optimization algorithms are implemented and evaluated: genetic algorithm, differential evolution, particle swarm, and greedy search. The algorithms identify optimal combinations of ply-level layup strategies by analyzing defect stacking using two objective functions. These approaches are evaluated through a digital case study performed on a complex tool surface. The result is a streamlined methodology for comparing different laminate-level manufacturing strategies and minimizing the through thickness defect stack-up.
{"title":"Automated Fiber Placement Laminate Level Optimization for Mitigation of Through Thickness Defect Stacking","authors":"N. Swingle, A. Brasington, J. Halbritter, R. Harik","doi":"10.33599/sj.v59no6.03","DOIUrl":"https://doi.org/10.33599/sj.v59no6.03","url":null,"abstract":"Manufacturing composite structures with Automated Fiber Placement (AFP) requires detailed process planning that is rigorous and time consuming. To facilitate, accelerate and perpetuate process planning knowledge, the Computer Aided Process Planning (CAPP) tool was developed. CAPP assists process planners in identifying optimal layup strategies for each ply of a laminate. This paper expands the established framework for analyzing defect stack-up through thickness of a laminate. Four different combinatorial optimization algorithms are implemented and evaluated: genetic algorithm, differential evolution, particle swarm, and greedy search. The algorithms identify optimal combinations of ply-level layup strategies by analyzing defect stacking using two objective functions. These approaches are evaluated through a digital case study performed on a complex tool surface. The result is a streamlined methodology for comparing different laminate-level manufacturing strategies and minimizing the through thickness defect stack-up.","PeriodicalId":49577,"journal":{"name":"SAMPE Journal","volume":"55 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139306087","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}
Joseph P. Heil, Mark A. Wadsworth, K. Dando, Ron E. Jones, Matt Tymes, Sam J Slater, Rodney E. Bahr, Bryan T. Bearden
Spirit AeroSystems is developing a thermoplastic technology demonstrator featuring an out of autoclave fabrication approach. Furthermore, the intent is to demonstrate the capability in the United States and preferably at our own domestic facility. The chosen configuration is a fuselage skin panel about 1.2 m wide and 2.2 m long with five stringers and four frames. Laser assisted thermoplastic Automated Fiber Placement (AFP) is used to manufacture the skin; stringers are stamp formed, and frames used two fabrication paths: stamp forming and oven consolidation. Co-Fusion simultaneously consolidates the skin and welds stringers to the skin followed by a separate frame welding process.
{"title":"Thermoplastic Composite Rate Enhanced Stiffened Skin: A Case Study","authors":"Joseph P. Heil, Mark A. Wadsworth, K. Dando, Ron E. Jones, Matt Tymes, Sam J Slater, Rodney E. Bahr, Bryan T. Bearden","doi":"10.33599/sj.v59no6.01","DOIUrl":"https://doi.org/10.33599/sj.v59no6.01","url":null,"abstract":"Spirit AeroSystems is developing a thermoplastic technology demonstrator featuring an out of autoclave fabrication approach. Furthermore, the intent is to demonstrate the capability in the United States and preferably at our own domestic facility. The chosen configuration is a fuselage skin panel about 1.2 m wide and 2.2 m long with five stringers and four frames. Laser assisted thermoplastic Automated Fiber Placement (AFP) is used to manufacture the skin; stringers are stamp formed, and frames used two fabrication paths: stamp forming and oven consolidation. Co-Fusion simultaneously consolidates the skin and welds stringers to the skin followed by a separate frame welding process.","PeriodicalId":49577,"journal":{"name":"SAMPE Journal","volume":"69 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139292307","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}
Simon Konze, T. V. Lisbôa, Sascha Bruk, L. Bittrich, Markus Stommel, Martin Wildemann, Johannes Herold, A. Spickenheuer
Integrating different matrices into fiber-reinforced plastics (FRP) offers great potential for general tailored functionalities. By locally integrating flexible matrix zones in otherwise stiff FRPs, both very stiff and flexible areas with properties such as bending and damping behavior can be achieved. A novel method for manufacturing these so-called multi-matrix composites (MMC) is presented in this work. Either manually or in an automated fashion a first matrix system is locally applied to fiber preforms. After curing these zones, all fiber areas that are still dry can be infiltrated with a second matrix system. In this manner a composite structure with different and defined matrix zones of almost any size and shape can be created. Experimentally, the integration of flexible polyurethane and stiff epoxy resin into glass fiber preforms was investigated, considering material compatibility and process precision. For an established process-chain, good infiltration quality with distinct transition zone between the matrices was verified, resulting in bending specimens showing deformation only in the regions of polyurethane elastomer matrix.
{"title":"A Novel additive manufacturing process for multi-matrix fiber reinforced composites","authors":"Simon Konze, T. V. Lisbôa, Sascha Bruk, L. Bittrich, Markus Stommel, Martin Wildemann, Johannes Herold, A. Spickenheuer","doi":"10.33599/sj.v59no6.04","DOIUrl":"https://doi.org/10.33599/sj.v59no6.04","url":null,"abstract":"Integrating different matrices into fiber-reinforced plastics (FRP) offers great potential for general tailored functionalities. By locally integrating flexible matrix zones in otherwise stiff FRPs, both very stiff and flexible areas with properties such as bending and damping behavior can be achieved. A novel method for manufacturing these so-called multi-matrix composites (MMC) is presented in this work. Either manually or in an automated fashion a first matrix system is locally applied to fiber preforms. After curing these zones, all fiber areas that are still dry can be infiltrated with a second matrix system. In this manner a composite structure with different and defined matrix zones of almost any size and shape can be created. Experimentally, the integration of flexible polyurethane and stiff epoxy resin into glass fiber preforms was investigated, considering material compatibility and process precision. For an established process-chain, good infiltration quality with distinct transition zone between the matrices was verified, resulting in bending specimens showing deformation only in the regions of polyurethane elastomer matrix.","PeriodicalId":49577,"journal":{"name":"SAMPE Journal","volume":"21 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2023-11-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139301676","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}
Marc Palardy-Sim, Julieta Barroeta Robles, Marc-André Octeau, Steven Roy, Ali Yousefpour, Stephen Atkinson, Scott Nesbitt, Reza Vaziri, Anoush Poursartip, Manuel Endrass, Lars Larsen, Michael Kupke
The continuous resistance welding (CRW) process consists of an end-effector which moves along the length of a weld seam, heating a conductive implant while compacting the joint locally throughout the melt and solidification stages of the thermoplastic material. The performance of the joint has been shown to be highly dependent on the process temperature at the weld interface; however, this cannot be measured directly during the process in a non-invasive manner. Other parameters such as boundary conditions, substructure properties, or part geometry may vary along the length of the weld. As such, a physics-based simulation is developed founded upon an “MSTEP” framework which defines how the materials (M), shape (S), tooling (T), and equipment (E) interact to determine the process (P). Detailed finite element (FE) models are developed for thermal analysis based on the weld geometry, boundary conditions, and previously developed and validated melt/crystallization models for the thermoplastic matrix. Experimental CRW tests are presented to validate simulations and calibrate suitable control variables.
{"title":"Towards In-line Control of Continuous Resistance Welding for Joining Structural Thermoplastic Composites","authors":"Marc Palardy-Sim, Julieta Barroeta Robles, Marc-André Octeau, Steven Roy, Ali Yousefpour, Stephen Atkinson, Scott Nesbitt, Reza Vaziri, Anoush Poursartip, Manuel Endrass, Lars Larsen, Michael Kupke","doi":"10.33599/sj.v59no5.01","DOIUrl":"https://doi.org/10.33599/sj.v59no5.01","url":null,"abstract":"The continuous resistance welding (CRW) process consists of an end-effector which moves along the length of a weld seam, heating a conductive implant while compacting the joint locally throughout the melt and solidification stages of the thermoplastic material. The performance of the joint has been shown to be highly dependent on the process temperature at the weld interface; however, this cannot be measured directly during the process in a non-invasive manner. Other parameters such as boundary conditions, substructure properties, or part geometry may vary along the length of the weld. As such, a physics-based simulation is developed founded upon an “MSTEP” framework which defines how the materials (M), shape (S), tooling (T), and equipment (E) interact to determine the process (P). Detailed finite element (FE) models are developed for thermal analysis based on the weld geometry, boundary conditions, and previously developed and validated melt/crystallization models for the thermoplastic matrix. Experimental CRW tests are presented to validate simulations and calibrate suitable control variables.","PeriodicalId":49577,"journal":{"name":"SAMPE Journal","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135298653","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}
Romain Martin, Martin Figueiredo, Christer Johansson, Jason R. Tavares, Martine Dubé
Welding techniques are emerging as a new method to join thermoplastic composite parts. They present a fast and efficient alternative to adhesives and mechanical fasteners. Induction welding is a welding technique that relies on the application of an oscillating magnetic field on the joining interface, where a material called a magnetic susceptor generates heat by interacting with the applied magnetic field. In this work, susceptors relying on magnetic hysteresis losses made of polyetherimide (PEI) and nickel (Ni) particles are investigated with varying Ni concentration. The materials are mixed using an internal mixer and pressed to form films approximately 500μm thick. To characterize the heating rates of the susceptor materials, samples are placed on an induction coil – a water-cooled copper tube in which AC current (frequency 388kHz), generates an alternating magnetic field – and the temperature evolution is measured using a thermal camera. An increasing concentration of Ni particles results in increased heating rate and maximum temperature reached by the samples. The temperature-time experimental curves are compared with theoretical heating curves to verify if the model can be used to predict the temperature evolution at the joining interface during a welding process.
{"title":"Characterization of Magnetic Susceptor Heating Rate Due to Hysteresis Losses in Thermoplastic Welding","authors":"Romain Martin, Martin Figueiredo, Christer Johansson, Jason R. Tavares, Martine Dubé","doi":"10.33599/sj.v59no5.02","DOIUrl":"https://doi.org/10.33599/sj.v59no5.02","url":null,"abstract":"Welding techniques are emerging as a new method to join thermoplastic composite parts. They present a fast and efficient alternative to adhesives and mechanical fasteners. Induction welding is a welding technique that relies on the application of an oscillating magnetic field on the joining interface, where a material called a magnetic susceptor generates heat by interacting with the applied magnetic field. In this work, susceptors relying on magnetic hysteresis losses made of polyetherimide (PEI) and nickel (Ni) particles are investigated with varying Ni concentration. The materials are mixed using an internal mixer and pressed to form films approximately 500μm thick. To characterize the heating rates of the susceptor materials, samples are placed on an induction coil – a water-cooled copper tube in which AC current (frequency 388kHz), generates an alternating magnetic field – and the temperature evolution is measured using a thermal camera. An increasing concentration of Ni particles results in increased heating rate and maximum temperature reached by the samples. The temperature-time experimental curves are compared with theoretical heating curves to verify if the model can be used to predict the temperature evolution at the joining interface during a welding process.","PeriodicalId":49577,"journal":{"name":"SAMPE Journal","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135387964","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}
Eduardo Barocio, Martin Eichenhofer, Jordan Kalman, Ludvik M. Fjeld, Joseph Kirchhoff, Garam Kim, R. Byron Pipes
Compression molding with long discontinuous fiber-reinforced thermoplastics enables replacing traditionally machined metallic components with geometrical complexity and with reductions in weight and potential enhancements in structural characteristics like durability, fatigue, and serviceability. Fiber length is critical in fiber-reinforced composites. While long continuous fibers limit the geometrical complexity that can be fabricated but provide exceptional mechanical properties, discontinuous fibers provide manufacturing flexibility but with a penalty in strength. This work demonstrates enhancement in strength and reduction in strength variability achieved by compression molding of long discontinuous fiber platelets and continuous fiber preforms. This approach was demonstrated for an overhead bin pin bracket geometry. Continuous fiber preforms were manufactured with 60% by volume of carbon fiber-reinforced Poly Ether Ketone Ketone (PEKK) using the 9T Labs continuous fiber Additive Fusion Technology (AFT). Similarly, fiber platelets with 60% by volume of carbon fiber reinforced PEKK were utilized. Continuous fiber preforms were designed considering both the concurrent flow of continuous and discontinuous fibers with the desired mesostructure of continuous and discontinuous fibers. The results presented in this work showed an increase of 99.6% in the load at the onset of damage by reinforcing the pin bracket with about 17% by weight of continuous fiber preforms. Similarly, the coefficient of variance of the load at the onset of failure decreased by 46%. Finally, reinforcing the pin bracket with continuous fiber preforms not only enhanced the strength characteristics but also decreased the variability in strength characteristics.
{"title":"Compression Molding of Hybrid Continuous and Discontinuous Fiber Reinforced Thermoplastics for Enhancing Strength Characteristics","authors":"Eduardo Barocio, Martin Eichenhofer, Jordan Kalman, Ludvik M. Fjeld, Joseph Kirchhoff, Garam Kim, R. Byron Pipes","doi":"10.33599/sj.v59no5.03","DOIUrl":"https://doi.org/10.33599/sj.v59no5.03","url":null,"abstract":"Compression molding with long discontinuous fiber-reinforced thermoplastics enables replacing traditionally machined metallic components with geometrical complexity and with reductions in weight and potential enhancements in structural characteristics like durability, fatigue, and serviceability. Fiber length is critical in fiber-reinforced composites. While long continuous fibers limit the geometrical complexity that can be fabricated but provide exceptional mechanical properties, discontinuous fibers provide manufacturing flexibility but with a penalty in strength. This work demonstrates enhancement in strength and reduction in strength variability achieved by compression molding of long discontinuous fiber platelets and continuous fiber preforms. This approach was demonstrated for an overhead bin pin bracket geometry. Continuous fiber preforms were manufactured with 60% by volume of carbon fiber-reinforced Poly Ether Ketone Ketone (PEKK) using the 9T Labs continuous fiber Additive Fusion Technology (AFT). Similarly, fiber platelets with 60% by volume of carbon fiber reinforced PEKK were utilized. Continuous fiber preforms were designed considering both the concurrent flow of continuous and discontinuous fibers with the desired mesostructure of continuous and discontinuous fibers. The results presented in this work showed an increase of 99.6% in the load at the onset of damage by reinforcing the pin bracket with about 17% by weight of continuous fiber preforms. Similarly, the coefficient of variance of the load at the onset of failure decreased by 46%. Finally, reinforcing the pin bracket with continuous fiber preforms not only enhanced the strength characteristics but also decreased the variability in strength characteristics.","PeriodicalId":49577,"journal":{"name":"SAMPE Journal","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135387728","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}
For over 20 years the bike industry has been using composite materials to make mountain bike frames and other components, becoming the default high end material in the past 5-10 years. Thermoset based carbon fiber composites have traditionally led the way, but recently the next generation technology of thermoplastic infused carbon fiber composites have entered the market as recyclability, impact toughness, and vibration damping become more important. In particular, a new class of mountain bike frames has hit the trails as produced by Revved Industries for their in-house brand, Guerrilla Gravity. Increased impact toughness and vibration damping of thermoplastic composites offer attractive performance advantages that are ideal for applications such as mountain bike frames and components. Several thermoplastic composite material options were investigated and PA6/carbon fiber produced by Toray Advanced Composites was selected. A significant breakthrough in thermoplastic composite part forming, co-molding, and fusing has led to a durable and robust design that sets thermoplastic frames apart from their thermoset counterparts. This paper will review the material selection, design and analysis, fabrication, and testing of a mountain bike frame that has proven itself in the market today.
{"title":"Mountain Bike Frame Innovation Using Thermplastic Composites - A Case Study","authors":"Matt Giaraffa, D. DeWayne Howell","doi":"10.33599/sj.v59no5.04","DOIUrl":"https://doi.org/10.33599/sj.v59no5.04","url":null,"abstract":"For over 20 years the bike industry has been using composite materials to make mountain bike frames and other components, becoming the default high end material in the past 5-10 years. Thermoset based carbon fiber composites have traditionally led the way, but recently the next generation technology of thermoplastic infused carbon fiber composites have entered the market as recyclability, impact toughness, and vibration damping become more important. In particular, a new class of mountain bike frames has hit the trails as produced by Revved Industries for their in-house brand, Guerrilla Gravity. Increased impact toughness and vibration damping of thermoplastic composites offer attractive performance advantages that are ideal for applications such as mountain bike frames and components. Several thermoplastic composite material options were investigated and PA6/carbon fiber produced by Toray Advanced Composites was selected. A significant breakthrough in thermoplastic composite part forming, co-molding, and fusing has led to a durable and robust design that sets thermoplastic frames apart from their thermoset counterparts. This paper will review the material selection, design and analysis, fabrication, and testing of a mountain bike frame that has proven itself in the market today.","PeriodicalId":49577,"journal":{"name":"SAMPE Journal","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135387961","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}
Pub Date : 2020-12-01DOI: 10.1016/s0262-4079(20)32103-5
R. Golde, Richard K. Kunz, M. Warner
{"title":"The shape of things to come","authors":"R. Golde, Richard K. Kunz, M. Warner","doi":"10.1016/s0262-4079(20)32103-5","DOIUrl":"https://doi.org/10.1016/s0262-4079(20)32103-5","url":null,"abstract":"","PeriodicalId":49577,"journal":{"name":"SAMPE Journal","volume":"35 1","pages":""},"PeriodicalIF":0.2,"publicationDate":"2020-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"56001270","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}
Three-dimensional (3D)-woven noncrimp fiber-reinforced composite (FRC) was tested for mechanical properties in the two principal directions of the main XY plane and compared to different Computer-Aided-Design/Computer-Aided-Machining (CAD/CAM) Dental Materials. The Dental Materials included ceramic with Vitablock Mark II®, ProCAD®, InCeram® Spinel, InCeram® Alumina and InCeram® Zirconia in addition to a resin-based 3M Corp. Paradigm® particulate-filled composite. Alternate material controls included Coors 300 Alumina Ceramic and a tungsten carbide 22% cobalt cermet. The 3D-woven FRC was vacuum assisted resin transfer molding processed as a one-depth-thickness ~19-mm preform with a vinyl-ester resin and cut into blocks similar to the commercial CAD/CAM Dental Materials. Mechanical test samples prepared for a flexural three-point span length of 10.0 mm were sectioned for minimum-depth cuts to compare machinability and fracture resistance between groups. 3D-woven FRC improved mechanical properties with significant statistical differences over all CAD/CAM Dental Materials and Coors Alumina Ceramic for flexural strength (p<0.001), resilience (p<0.05), work of fracture (p<0.001), strain energy release (p<0.05), critical stress intensity factor (p<0.001) and strain (p<0.001).
{"title":"3D-WOVEN FIBER-REINFORCED COMPOSITE FOR CAD/CAM DENTAL APPLICATION.","authors":"Richard Petersen, Perng-Ru Liu","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Three-dimensional (3D)-woven noncrimp fiber-reinforced composite (FRC) was tested for mechanical properties in the two principal directions of the main XY plane and compared to different Computer-Aided-Design/Computer-Aided-Machining (CAD/CAM) Dental Materials. The Dental Materials included ceramic with Vitablock Mark II®, ProCAD®, InCeram® Spinel, InCeram® Alumina and InCeram® Zirconia in addition to a resin-based 3M Corp. Paradigm® particulate-filled composite. Alternate material controls included Coors 300 Alumina Ceramic and a tungsten carbide 22% cobalt cermet. The 3D-woven FRC was vacuum assisted resin transfer molding processed as a one-depth-thickness ~19-mm preform with a vinyl-ester resin and cut into blocks similar to the commercial CAD/CAM Dental Materials. Mechanical test samples prepared for a flexural three-point span length of 10.0 mm were sectioned for minimum-depth cuts to compare machinability and fracture resistance between groups. 3D-woven FRC improved mechanical properties with significant statistical differences over all CAD/CAM Dental Materials and Coors Alumina Ceramic for flexural strength (p<0.001), resilience (p<0.05), work of fracture (p<0.001), strain energy release (p<0.05), critical stress intensity factor (p<0.001) and strain (p<0.001).</p>","PeriodicalId":49577,"journal":{"name":"SAMPE Journal","volume":"2016 ","pages":""},"PeriodicalIF":0.2,"publicationDate":"2016-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5026051/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141176777","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：