국내 최대 기계 및 로봇 연구정보

기술보고서

기술보고서 게시판 내용
타이틀	Fatigue Crack Growth Properties of a GLARE3-5/4 Fiber/Metal Laminate
저자	Toru TAKAMATSU, Takashi MATSUMURA, Norio OGURA, Toshiyuki SHIMOKAWA, Yoshiaki KAKUTA
Keyword	fiber/metal laminate; GLARE; fatigue; crack growth; variability; stress intensity factor; fiber bridging; delamination; analytical method
URL	http://send.nal.go.jp/send/jpn/dlpdf.php3/naltr0001368t.pdf?id=NALTR0001368T
보고서번호	NAL TR-1368T
발행년도	1998.07
출처	NAL (National Aerospace Laboratory of Japan)
ABSTRACT	The objective of this study is to investigate the properties of fatigue crack growth in GLARE3-5/4 fiber/metal laminate and the validity of methods for analyzing the fatigue crack growth of fiber/metal laminates. GLARE3-5/4 consists of five thin sheets of 2024-T3 aluminum alloy and four layers of (0/90) glass/epoxy. Centrally notched specimens were fatigue tested under constant amplitude loading and crack length was measured using the DC potential-drop method. The size of the delamination produced between aluminum alloy sheets and fiber-adhesive layers was measured from ultrasonic C-scan pictures taken around the fatigue crack. The test results indicated the features of fatigue crack growth in GLARE3-5/4. The validity of two methods for analyzing the fatigue crack growth of fiber/metal laminates is discussed based on the test results.