Elsevier, Engineering Fracture Mechanics, 3(63), p. 253-272
DOI: 10.1016/s0013-7944(99)00021-1
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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 two 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 the two methods for analyzing the fatigue crack growth of fiber/metal laminates is discussed based on the test results.