Tri-Azially Woven Fabric Composites for Aerospace Applications
Tri-axially woven fabric (TWF) composite is made up of three sets of inter-woven tows placed in three equally spaced in-plane directions combined with the matrix resin impregnated in the tows. The bending characteristics of carbon fiber/epoxy TWF composite are analytically and experimentally investigated. The stiffness isotropy that is observed under tensile load is also verified under flexure based on linear and nonlinear analyses combined with the assumption of infinite size specimens. The anisotropy that emerges at high loading levels under tensile load is predicted to be not as salient under the flexural loading. To verify the analytical predictions, pure bending and crushing tests are conducted. The experimental results support the predicted isotropy for infinite plates, though the actual specimens are of finite size. Thermal loading test is also conducted using rectangular specimens to obtain the thermal expansion coefficients, which are found to be larger than those analytically predicted. The overall isotropic nature and the excellent flexural strength verify the potential of the TWF for applications in various components of light-weight deployable structures. Examples of its application to deployable structure are also given.
Fabric composite stiffness isotropy bending behavior flezural strength deployable structure
Takahira AOKI Keishiro YOSHIDA Akihito WATANABE
Department of Aeronautics and Astronautics, University of Tokyo 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-86 Department of Aeronautics, Kanazawa Institute of Technology 7-1 Ohgigaoka, Nonoichi, Ishikawa 921-85 Sakase Adtech, Co.Ltd.14-10, Shimoyasuda, Maruoka, Fukui 910-0363, Japan
国际会议
北京
英文
1-6
2008-10-23（万方平台首次上网日期，不代表论文的发表时间）