Influence of residual stresses on the damage of composite laminates under tensile loading

摘要

This work investigates the effect of residual stresses on the damage of composite laminates. The incremental hole-drilling method is used to determine residual stresses in composite laminates [0_2/θ_2]_s and then acoustic emission technique is used for the identification of damage appearance during the tensile testing. The samples with different residual stress distribution are prepared through curing and post curing in order to study the role of residual stress on the damage of composite laminates. In addition to the experimental method, the theoretical approach is also employed to illustrate the role of residual stress on the damage of composite laminates.