Fatigue Crack Growth Behavior of the Thin-to-Thick Type Stiffened Panels with Bonded Patch

J. Ocean Eng. Technol. 2008;22(3):89-95.

Rhee Hwan-Woo,Kim Seung-Hyun

Div. of Mechanical Engineering and Automation Kyungnam University,Dept. of Mechanical Engineering Graduate School Kyungnam University

접착 패칭된 박-후판 결합형 보강판의 피로균열성장 거동

이환우,김승현

경남대학교 기계자동화공학부,경남대학교 대학원 기계공학과

Keywords: Composite patch, Repair, Crack patching technique, Multiple load path, Stiffened panels, Fatigue crack, Aspect ratio

핵심용어: 복합재료 패치, 보수, 균열 패칭법, 복수하중경로, 보강판, 피로균열, 형상비

Abstract

Fatigue cracked components often needs to be repaired during service. Standard repair schemes involve strengthening the component by connecting reinforcing members by means of rivets or welding by reducing the crack-tip stress intensity factors. Recent technological advances in fiber reinforced composite materials and adhesive bonding have led to the development of efficient repair schemes. In this study, the influence of various shape parameters on fatigue crack growth in the CCT type uniform thickness plates and the thin-ta-thick type stiffened panels repaired with woven fabric type Kevlar-Epoxy composite patch are studied experimentally.