期刊
MECHANICS OF ADVANCED MATERIALS AND STRUCTURES
卷 21, 期 3, 页码 207-212出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/15376494.2013.834096
关键词
scarf repair; patch repair; scarf angle; composite laminate; 3D-FEA; failure analysis
Experiments and finite element analysis (FEA) were performed on scarf-patch repaired composite panels. Tensile static tests were performed on pristine and repaired panels to evaluate their tensile strength. The obtained results showed that the repaired panels restored tensile strength by 95% of the pristine value. Subsequently, a verification finite element (FE) model was established. Two additional models, one with homogenized mechanical properties of the laminate and one that considered that the ply-by-ply properties were built to simulate the experimental repairs. The predictions of the two models agreed reasonably well with the experimental results and the optimum scarf angle was found at 2.5 degrees.
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