The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform
Youngseok Oh - One of the best experts on this subject based on the ideXlab platform.
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microstructural design and additive manufacturing and characterization of 3d orthogonal short carbon fiber acrylonitrile butadiene styrene preform and composite
Composites Science and Technology, 2016Co-Authors: Zhenzhen Quan, Mark Mirotznik, Xiaohong Qin, Amanda S Wu, Joon-hyung Byun, Jonghwan Suhr, Zachary Larimore, Jianyong Yu, Youngseok OhAbstract:Abstract In contrast to conventional preforming techniques, additive manufacturing features direct and layer-by-layer fabrication, which provides viable new capabilities for the fabrication of reinforced composites. In this article, we explore the microstructural design as well as additive manufacturing and characterization of 3D orthogonal, short carbon fiber/acrylonitrile-butadiene-styrene (ABS) Preforms and composite. First, an array of 3D orthogonal Preforms is designed based on topological consideration and validated by fused filament fabrication of pure ABS wire; high fidelity between models and Preforms is accomplished. Then, short carbon fibers are introduced into the designed 3D orthogonal Preforms as reinforcement, using a short carbon fiber/ABS wire. Lastly, the compressive behavior of a 3D orthogonal, short carbon fiber/ABS preform and that of its silicone infused composite are characterized. The preform design methodology developed in this research as well as the preliminary effort made in composite fabrication and characterization demonstrates the feasibility of additive manufacturing of 3D orthogonal preform based fiber composites.
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Microstructural design and additive manufacturing and characterization of 3D orthogonal short carbon fiber/acrylonitrile-butadiene-styrene preform and composite
Composites Science and Technology, 2016Co-Authors: Zhenzhen Quan, Amanda Wu, Mark Mirotznik, Xiaohong Qin, Joon-hyung Byun, Jonghwan Suhr, Zachary Larimore, Jianyong Yu, Youngseok OhAbstract:In contrast to conventional preforming techniques, additive manufacturing features direct and layer-by-layer fabrication, which provides viable new capabilities for the fabrication of reinforced composites. In this article, we explore the microstructural design as well as additive manufacturing and characterization of 3D orthogonal, short carbon fiber/acrylonitrile-butadiene-styrene (ABS) Preforms and composite. First, an array of 3D orthogonal Preforms is designed based on topological consideration and validated by fused filament fabrication of pure ABS wire; high fidelity between models and Preforms is accomplished. Then, short carbon fibers are introduced into the designed 3D orthogonal Preforms as reinforcement, using a short carbon fiber/ABS wire. Lastly, the compressive behavior of a 3D orthogonal, short carbon fiber/ABS preform and that of its silicone infused composite are characterized. The preform design methodology developed in this research as well as the preliminary effort made in composite fabrication and characterization demonstrates the feasibility of additive manufacturing of 3D orthogonal preform based fiber composites.
Bruno Riccardi - One of the best experts on this subject based on the ideXlab platform.
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manufacturing sic fiber reinforced sic matrix composites by improved cvi slurry infiltration polymer impregnation and pyrolysis
Journal of the American Ceramic Society, 2004Co-Authors: Carlo Alberto Nannetti, Dario A De Pinto, Alberto Ortona, Bruno RiccardiAbstract:Two- and three-dimensional SiCr/SiC composites have been prepared starting from Tyranno SA(tm) fiber Preforms. Preform densification has been performed by a modified preceramic polymer impregnation and pyrolysis (PIP) process consisting of filling the preform large interbundle voids with SiC powder before the PIP process. This step was accomplished by low-pressure infiltration of a SiC powder dilute slurry through the preform thickness. Specimens were further processed with polymer impregnation and pyrolysis to determine the effects on structural, thermal, and mechanical properties of the obtained composites. High-temperature pyrolysis treatment, which promoted polymer derived SiC matrix crystallization, markedly increased thermal diffusivity.
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Manufacturing SiC-fiber-reinforced SiC matrix composites by improved CVI/slurry infiltration/polymer impregnation and pyrolysis
Journal of the American Ceramic Society, 2004Co-Authors: Carlo Alberto Nannetti, Dario A De Pinto, Alberto Ortona, Bruno RiccardiAbstract:Two- and three-dimensional SiCr/SiC composites have been prepared starting from Tyranno SA(tm) fiber Preforms. Preform densification has been performed by a modified preceramic polymer impregnation and pyrolysis (PIP) process consisting of filling the preform large interbundle voids with SiC powder before the PIP process. This step was accomplished by low-pressure infiltration of a SiC powder dilute slurry through the preform thickness. Specimens were further processed with polymer impregnation and pyrolysis to determine the effects on structural, thermal, and mechanical properties of the obtained composites. High-temperature pyrolysis treatment, which promoted polymer derived SiC matrix crystallization, markedly increased thermal diffusivity.
Zhenzhen Quan - One of the best experts on this subject based on the ideXlab platform.
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microstructural design and additive manufacturing and characterization of 3d orthogonal short carbon fiber acrylonitrile butadiene styrene preform and composite
Composites Science and Technology, 2016Co-Authors: Zhenzhen Quan, Mark Mirotznik, Xiaohong Qin, Amanda S Wu, Joon-hyung Byun, Jonghwan Suhr, Zachary Larimore, Jianyong Yu, Youngseok OhAbstract:Abstract In contrast to conventional preforming techniques, additive manufacturing features direct and layer-by-layer fabrication, which provides viable new capabilities for the fabrication of reinforced composites. In this article, we explore the microstructural design as well as additive manufacturing and characterization of 3D orthogonal, short carbon fiber/acrylonitrile-butadiene-styrene (ABS) Preforms and composite. First, an array of 3D orthogonal Preforms is designed based on topological consideration and validated by fused filament fabrication of pure ABS wire; high fidelity between models and Preforms is accomplished. Then, short carbon fibers are introduced into the designed 3D orthogonal Preforms as reinforcement, using a short carbon fiber/ABS wire. Lastly, the compressive behavior of a 3D orthogonal, short carbon fiber/ABS preform and that of its silicone infused composite are characterized. The preform design methodology developed in this research as well as the preliminary effort made in composite fabrication and characterization demonstrates the feasibility of additive manufacturing of 3D orthogonal preform based fiber composites.
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Microstructural design and additive manufacturing and characterization of 3D orthogonal short carbon fiber/acrylonitrile-butadiene-styrene preform and composite
Composites Science and Technology, 2016Co-Authors: Zhenzhen Quan, Amanda Wu, Mark Mirotznik, Xiaohong Qin, Joon-hyung Byun, Jonghwan Suhr, Zachary Larimore, Jianyong Yu, Youngseok OhAbstract:In contrast to conventional preforming techniques, additive manufacturing features direct and layer-by-layer fabrication, which provides viable new capabilities for the fabrication of reinforced composites. In this article, we explore the microstructural design as well as additive manufacturing and characterization of 3D orthogonal, short carbon fiber/acrylonitrile-butadiene-styrene (ABS) Preforms and composite. First, an array of 3D orthogonal Preforms is designed based on topological consideration and validated by fused filament fabrication of pure ABS wire; high fidelity between models and Preforms is accomplished. Then, short carbon fibers are introduced into the designed 3D orthogonal Preforms as reinforcement, using a short carbon fiber/ABS wire. Lastly, the compressive behavior of a 3D orthogonal, short carbon fiber/ABS preform and that of its silicone infused composite are characterized. The preform design methodology developed in this research as well as the preliminary effort made in composite fabrication and characterization demonstrates the feasibility of additive manufacturing of 3D orthogonal preform based fiber composites.
Carlo Alberto Nannetti - One of the best experts on this subject based on the ideXlab platform.
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manufacturing sic fiber reinforced sic matrix composites by improved cvi slurry infiltration polymer impregnation and pyrolysis
Journal of the American Ceramic Society, 2004Co-Authors: Carlo Alberto Nannetti, Dario A De Pinto, Alberto Ortona, Bruno RiccardiAbstract:Two- and three-dimensional SiCr/SiC composites have been prepared starting from Tyranno SA(tm) fiber Preforms. Preform densification has been performed by a modified preceramic polymer impregnation and pyrolysis (PIP) process consisting of filling the preform large interbundle voids with SiC powder before the PIP process. This step was accomplished by low-pressure infiltration of a SiC powder dilute slurry through the preform thickness. Specimens were further processed with polymer impregnation and pyrolysis to determine the effects on structural, thermal, and mechanical properties of the obtained composites. High-temperature pyrolysis treatment, which promoted polymer derived SiC matrix crystallization, markedly increased thermal diffusivity.
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Manufacturing SiC-fiber-reinforced SiC matrix composites by improved CVI/slurry infiltration/polymer impregnation and pyrolysis
Journal of the American Ceramic Society, 2004Co-Authors: Carlo Alberto Nannetti, Dario A De Pinto, Alberto Ortona, Bruno RiccardiAbstract:Two- and three-dimensional SiCr/SiC composites have been prepared starting from Tyranno SA(tm) fiber Preforms. Preform densification has been performed by a modified preceramic polymer impregnation and pyrolysis (PIP) process consisting of filling the preform large interbundle voids with SiC powder before the PIP process. This step was accomplished by low-pressure infiltration of a SiC powder dilute slurry through the preform thickness. Specimens were further processed with polymer impregnation and pyrolysis to determine the effects on structural, thermal, and mechanical properties of the obtained composites. High-temperature pyrolysis treatment, which promoted polymer derived SiC matrix crystallization, markedly increased thermal diffusivity.
Katja Lyytikainen - One of the best experts on this subject based on the ideXlab platform.
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heat transfer within a microstructured polymer optical fibre preform
Modelling and Simulation in Materials Science and Engineering, 2004Co-Authors: Joseph Zagari, G W Barton, Katja Lyytikainen, John CanningAbstract:Preform heating is one of the most important steps in the polymer fibre fabrication process due to the potential distortion that can be introduced when exposing the structure to high temperatures. Such heating is further complicated when internal air-structures are introduced into the preform, such as in microstructured polymer optical fibre (MPOF) Preforms. The aim of this study was thus to investigate heat transfer in an MPOF preform. The effect of air-structure was studied using both numerical heat transfer simulations and preform heating experiments. A two-dimensional conductive heat transfer model with surface radiation was used in simulating the transient heat transfer in MPOF Preforms with the results compared to those for a solid preform. It was found that relatively long heating times were required to reach a uniform temperature distribution within a preform, and that depending on the preform's air fraction its centre could heat up either faster or slower than a solid preform. Experimental tests, where both a solid and an air-structured preform were heated in a drawing furnace with internal temperatures measured across the preform, confirmed the findings from the numerical simulations.
