인문학
사회과학
자연과학
공학
의약학
농수해양학
예술체육학
복합학
DBpia AI
AI 에이전트
AI 아이디어
AI 리더
AI 뷰어
Citeasy
크롬 서지관리 다운로드
지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
피인용 0
초록·키워드
T-50 Full-Scale Airframe Durability Test was conducted for two service lifetimes to verify the structural integrity of the airframe against its projected loads environment. After the completion of second life testing, a comprehensive teardown inspection was planned and conducted to identify and document all discrepancies in the structure, which had been initiated and/or propagated as a result of spectrum loading. From the teardown inspection, several discrepancies were found in wide spread structural components, primarily canopy floor support beam, wing carry through bulkheads, wing spars and ribs, wing lower skins and attach fittings, etc. Fractographic analyses, for the most notable inspection findings, were also performed to correlate test results with damage tolerance crack growth analysis models. From these correlation study, T-50 design practice of the damage tolerable single load path, slow crack growth approach was validated and the analysis methods utilizing a representative crack growth retardation parameter - a representative Willenborg Shut-Off Ratio in this study - were proved to be adequately conservative with a high degree of confidence. Design improvement were accomplished to resolve service life related discrepancies and to ensure structural integrity of production airframe.
본문·목차
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