Abstract
Although estimating interlaminar fracture strength is a key issue in the design of composite structures, interlaminar fracture toughness tests are usually conducted only for unidirectional laminates. Since multidirectional laminates are used in composite structures, an understanding of delamination characteristics and prediction techniques for multidirectional laminates are needed. In this paper, the tensile tests of the L-shaped laminated specimens with the initial delamination were conducted for 0//90 interface. In addition, the numerical study by VCCT(Virtual Crack Closure Techniques) was performed to predict the test results.
