Paper number 1205
|THERMAL DEFORMATIONS OF CARBON/EPOXY LAMINATES FOR TEMPERATURE VARIATION|
K. Joon Yoon and Ju-Sik Kim
Department of Aerospace Engineering, Konkuk University
Kwangjin-gu, Seoul 143-701, Korea
|Summary||Effects of anisotropy of thermal expansion properties on the thermal distortion of Carbon/Epoxy composite stiffner structures were investigated and analyzed. Coefficients of thermal expansion and elastic properties in the material principal directions were measured and characterized for temperature variation. By applying the characterized properties to the classical lamination theory, the spring-forward distortion of a L-section laminate was predicted. The spring-forward angles of L-section laminates of various angle plies were measured and compared with those predicted. Experimental results show that the process induced spring-forward of L-section laminate can be predicted quite well by using the computational method.
||Keywords|| thermal deformation, coefficient of thermal expansion, carbon/epoxy, formulation of CTEs for temperature variation.
Theme : Mechanical and Physical Properties ; Physical Properties
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