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Mixed-mode fracture in unidirectional graphite epoxy composite laminates with central notch (1992)

Binienda, Wieslaw K. ; Reddy, E. S.

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Publication Date: 2011-08-24

Description: Mixed-mode matrix fracture in central notched off-axis unidirectional composite laminates was investigated. A limited number of unidirectional tensile type specimens with a central, horizontal, notch were tested. Crack initiation and propagation were examined under various local stress fields that were controlled by fiber orientations. The tested specimens were simulated using a two dimensional finite element method with constant strain loading. The strain energy release rates along the crack were evaluated via crack closure technique. The variation of critical strain energy rates with off-axis angle was studied. The results from single (one-sided) and double (two-sided) crack simulations were presented and compared.

Keywords: STRUCTURAL MECHANICS

Type: Journal of Reinforced Plastics and Composites (ISSN 0731-6844); 11; 324-338

Format: text

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