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Size effect on the fracture toughness of metallic foil

Wang, Huai-Wen; Kang, Yi Lan; Zhang, Zhi-Feng; Qin, Qing Hua


The size effects on fracture behavior of Cu foil are investigated by a new optical technique, the digital speckle correlation method (DSCM). Displacement and strain fields around a crack tip are analyzed for different thicknesses of Cu foil. Then, the J integral and fracture toughness JC are evaluated directly from the strain fields around the crack tip. The fracture toughness JC is obtained as a function of foil thickness. The results indicate that JC indeed depends on foil thickness within a...[Show more]

CollectionsANU Research Publications
Date published: 2003
Type: Journal article
Source: International Journal of Fracture
DOI: 10.1023/B:FRAC.0000007376.06477.e8


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