Calculation of $\small{G_1}$ for unidirectional laminated composites by using the two parameter technique

Title & Authors
Calculation of $\small{G_1}$ for unidirectional laminated composites by using the two parameter technique
Rhee, Gyeong-Yeop;

Abstract
Two parameter technique that uses far-field stress and displacement distributions was applied to composite laminates in order to calculate mode II energy release rate, $\small{G_{II}}$ . The $\small{G_{II}}$ calculated by two parameter technique was compared with that calculated from the crack closure method to inspect the effectiveness of two parameter technique. Sensitivity study of two parameter technique to the crack extension size was also performed. The results showed that both methods produced comparable $\small{G_{II}}$ results. In particular, it was found that although the crack closure method was affected by the crack extension size, the two parameter technique was less affected by the crack extension size.
Keywords
Laminated Composites;Energy Release Rate;Crack Extension Size;Two Parameter Technique;Crack Closure Method;
Language
Korean
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