The geometry effects for stress intensity factor of sandwich specimen for measuring interfacial fracture toughness |
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| Authors: | Ming Yuan He C F Shih Anthony G Evans |
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| Affiliation: | (1) Materials Department, College of Engineering, University of California, 93106 Santa Barbara, California, USA;(2) Division of Engineering, Brown University, 02912 Providence, Rhode Island, USA |
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| Abstract: | The interfacial stress intensity factors for three types of sandwich specimens: the single edge crack tensile specimen, the three point bend specimen and the four point shear specimen were obtained by the finite element analysis and compared with the asymptotic solutions. The results show that the geometric effect for mode II specimen is larger than mode I specimen. The limit curves for geometry factor equal to 1.05 were obtained to indicate the usable range of validity of the asymptotic solution. |
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