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Experimental And Fem Study Of Thermal Cycling Induced Microcracking In Carbon/Epoxy Triaxial Braided Composites, Chao Zhang, Wieslaw Binienda, Gregory Morscher, Richard Martin, Lee Kohlman
Experimental And Fem Study Of Thermal Cycling Induced Microcracking In Carbon/Epoxy Triaxial Braided Composites, Chao Zhang, Wieslaw Binienda, Gregory Morscher, Richard Martin, Lee Kohlman
Wieslaw K. Binienda
The microcrack distribution and mass change in T700s/PR520 and T700s/3502 carbon/epoxy braided composites exposed to thermal cycling was evaluated experimentally. Acoustic emission was utilized to record the crack initiation and propagation under cyclic thermal loading between −55 °C and 120 °C. Transverse microcrack morphology was investigated using X-ray computed tomography. The differing performance of two kinds of composites was discovered and analyzed. Based on the observations of microcrack formation, a meso-mechanical finite element model was developed to obtain the resultant mechanical properties. The simulation results exhibited a decrease in strength and stiffness with increasing crack density. Strength and stiffness reduction …
Experimental And Fem Study Of Thermal Cycling Induced Microcracking In Carbon/Epoxy Triaxial Braided Composites, Chao Zhang, Wieslaw Binienda, Gregory Morscher, Richard Martin, Lee Kohlman
Experimental And Fem Study Of Thermal Cycling Induced Microcracking In Carbon/Epoxy Triaxial Braided Composites, Chao Zhang, Wieslaw Binienda, Gregory Morscher, Richard Martin, Lee Kohlman
Dr. Gregory N. Morscher
The microcrack distribution and mass change in T700s/PR520 and T700s/3502 carbon/epoxy braided composites exposed to thermal cycling was evaluated experimentally. Acoustic emission was utilized to record the crack initiation and propagation under cyclic thermal loading between −55 °C and 120 °C. Transverse microcrack morphology was investigated using X-ray computed tomography. The differing performance of two kinds of composites was discovered and analyzed. Based on the observations of microcrack formation, a meso-mechanical finite element model was developed to obtain the resultant mechanical properties. The simulation results exhibited a decrease in strength and stiffness with increasing crack density. Strength and stiffness reduction …