Analysis of Thermal Residual Stress in Composite Patches

복합재 패춰의 열잔류응력 해석

  • 김위대 (부산대학교 항공우주공학과) ;
  • 김난호 (부산대학교 항공우주공학과)
  • Published : 2000.11.01

Abstract

This research addresses study on thermal residual stress of a composite patch repair of the edge cracked aluminium panel of aging aircraft. Composite patch repair is an efficient and economical technique to improve the damage tolerance of cracked metallic structures. These are thermal residual stresses due to the mismatch of coefficient of thermal expansion, and these are affected by the curing cycle of patch specimen. In this study, three curing cycles were selected for F.E. analysis. This study features the effect on composite patch and aluminum by thermal residual stress during crack propagation in aluminum plate.