Chapter
Jul 11, 2012
Finite Element Modeling of Thermal Cycling Induced Microcracking in Carbon/Epoxy Triaxial Braided Composites
Authors: Chao Zhang [email protected], Wieslaw K. Binienda [email protected], Gregory Morscher [email protected], Richard E. Martin [email protected], and Lee W. Kohlman [email protected]Author Affiliations
Publication: Earth and Space 2012: Engineering, Science, Construction, and Operations in Challenging Environments
Abstract
The microcrack distribution and mass change in PR520/T700s and 3502/T700s 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 by using X-ray Computed Tomography. Different 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 versus crack densities in different orientations were compared. The changes of global mechanical behavior in both axial and transverse loading conditions were studied.
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Published In
Earth and Space 2012: Engineering, Science, Construction, and Operations in Challenging Environments
Pages: 1264 - 1274
Copyright
© 2012 American Society of Civil Engineers.
History
Published online: Jul 11, 2012
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Authors
Affiliations
Department of Civil Engineering, University of Akron, 302 Buchtel Common, Akron, Ohio, 44304. E-mail: [email protected]
Department of Civil Engineering, University of Akron, 302 Buchtel Common, Akron, Ohio, 44304. E-mail: [email protected]
Department of Mechanical Engineering, University of Akron, 302 Buchtel Common, Akron, Ohio, 44304. E-mail: [email protected]
Department of Mechanical Engineering, Cleveland State University, 21000 Brookpark Rd, Cleveland, Ohio, 44135. E-mail: [email protected]
Department of Civil Engineering, University of Akron, 302 Buchtel Common, Akron, Ohio, 44304. E-mail: [email protected]
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