An insight into three approaches for determining fatigue delamination resistance in DCB tests on composite laminates

Fatigue delamination resistance Gcf, defined as the strain energy release rate during the fatigue crack growth at a certain crack length, was proposed in literature to characterize the real changing resistance of composite laminates against the fatigue delamination growth. Determining Gcf is important for an accurate interpretation of the fatigue delamination behavior when the normalization method is used to evaluate the fatigue delamination...