Experimental investigations of the effect of thickness on fracture toughness of metallic foils
The effect of thickness on the fracture toughness JC of metallic foil was investigated experimentally. Double-edge cracked specimens, made of copper foils with thicknesses t ranging from 0.02 to 1 mm, were loaded in tension till fracture. The digital speckle correlation method (DSCM) was used to evaluate the strain fields around the crack tip, allowing determination of the J integral. The fracture toughness defined as the value of the J integral at cracking initiation was shown to first...[Show more]
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|Source:||Materials Science and Engineering A|
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