Initiation and Growth of Delamination Along 0/90 Interfaces in Laminates
Matrix dominant failure in the form of transverse cracks occurs in 90-degree plies of composite laminates subject to tensile loads. These transverse cracks act as precursors to delamination between axial load carrying zero degree ply group and transverse 90-degree ply group. A micromechanics analytical model is presented for the study of delamination onset and growth from the tip of transverse cracks. The model is based on a consistent shear lag stress-displacement relations and accounts for the transverse normal stresses in the matrix, unlike the classical shear-lag assumptions. The resulting governing equations are solved numerically using eigenvalue-eigenvector technique. The failure stresses/strains are determined based on a point stress failure criterion. The results are presented for a number of laminate configurations.
L. R. Dharani and H. Tang, "Initiation and Growth of Delamination Along 0/90 Interfaces in Laminates," National SAMPE Symposium and Exhibition (Proceedings), Society for the Advancement of Material and Process Engineering (SAMPE) Publishing, Jan 1990.
National SAMPE Symposium and Exhibition (Proceedings) (1990, Anaheim, CA, USA)
Mechanical and Aerospace Engineering
Article - Conference proceedings
© 1990 Society for the Advancement of Material and Process Engineering (SAMPE) Publishing, All rights reserved.