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Fiber-Matrix Interface Characterization through the Microbond Test
Sockalingam, Subramani,Nilakantan, Gaurav The Korean Society for Aeronautical and Space Scie 2012 International Journal of Aeronautical and Space Sc Vol.13 No.3
Fiber reinforced polymer matrix composites are widely used to provide protection against ballistic impact and blast events. There are several factors that govern the structural response and mechanical properties of a textile composite structure, of which the fiber-matrix interfacial behavior is a crucial determinant. This paper reviews the microbond or microdroplet test methodology that is used to characterize the fiber-matrix interfacial behavior, particularly the interface shear strength (IFSS). The various analytical, experimental, and numerical approaches applied to the microbond test are reviewed in detail.
Fiber-Matrix Interface Characterization through the Microbond Test
Subramani Sockalingam,Gaurav Nilakantan 한국항공우주학회 2012 International Journal of Aeronautical and Space Sc Vol.13 No.3
Fiber reinforced polymer matrix composites are widely used to provide protection against ballistic impact and blast events. There are several factors that govern the structural response and mechanical properties of a textile composite structure, of which the fiber-matrix interfacial behavior is a crucial determinant. This paper reviews the microbond or microdroplet test methodology that is used to characterize the fiber-matrix interfacial behavior, particularly the interface shear strength (IFSS). The various analytical, experimental, and numerical approaches applied to the microbond test are reviewed in detail.
Modeling the Fibrillation of Kevlar® KM2 Single Fibers Subjected to Transverse Compression
Jeffrey M. Staniszewski,Subramani Sockalingam,Travis A. Bogetti,John W. Gillespie Jr 한국섬유공학회 2018 Fibers and polymers Vol.19 No.7
In this work, fibrillation is introduced as an energy absorbing mechanism in the modeling of Kevlar® KM2 single fibers subjected to quasi-static transverse compression. Fibrillation is simulated using a finite element model of the fiber cross-section containing discrete fibrils connected by interfibrillar cohesive zones. Model predictions of nominal stress-strain response for an assumed bilinear cohesive traction-separation interfibrillar behavior are compared to experimental data. Analysis shows that modeling of the microstructural fibril network, represented by a distribution of strong cohesive interactions, is necessary to capture the experimental response. The model provides valuable insight into the unique deformation mechanisms governing fiber fibrillation under transverse compression.