6533b7dafe1ef96bd126eac2

RESEARCH PRODUCT

Dependence of fracture toughness of composite laminates on interface ply orientations and delamination growth direction

M. KönigJanis Andersons

subject

Fiber pull-outFracture toughnessMaterials scienceDelaminationComposite numberGeneral EngineeringCeramics and CompositesComposite materialComposite laminatesReinforcementExperimental research

description

A critical review has been performed of the published experimental research concerning delamination onset and growth in composite laminate interfaces of different lay-ups under single-mode loadings. It was found that, depending on the loading mode and interface lay-up, the traditional fracture toughness characterization by unidirectionally reinforced composite tests can lead to marked under- or overestimation of material resistance to crack growth. Empirical models of fracture toughness as a function of delamination front orientation with respect to reinforcement directions of the adjacent laminae have been validated and their applicability range established.

https://doi.org/10.1016/j.compscitech.2004.03.007