Determination of cohesive laws of composite bonded joints under mode II loading

In this work, mode II cohesive laws of carbon–epoxy composite bonded joints were obtained using the direct method applied to the end notched flexure (ENF) test. The direct method is based on the differentiation of the relation between the evolution of the fracture energy (JII) and the crack tip opening displacement in mode II (CTODII) during the test. A data reduction scheme based on equivalent crack length concept was used to obtain the...