International Journal of Aerospace and Lightweight Structures

doi: 10.3850/S2010428613000639

Delamination Damage Propagation Behavior of Composite Laminate Plate Under Low-Velocity Impact Using a New Adhesive Layer Model

Yuan Gao, Yong Zhao and Ke Dong^a School of Naval Architecture and Ocean Engineering, Harbin Institute of Technology AT WeiHai, Weihai 264209, Shandong, P.R. China. ^adongke213@126.com

ABSTRACT

Based on interface adhesive theory and delamination damage mechanism, a new adhe- sive layer model is proposed to analyze the intra-layer delamination damage process of composite laminated plate subjected to low velocity impact. The influences of through- thickness tensile stresses, inter-laminar shear stresses and matrix cracking on delami- nation damage are taken into consideration in this model. Compared with traditional strength failure criterion model or fracture mechanics energy release rate model, analyt- ical results of this model are in good agreement with experimental data. The damage extension characteristics and the various influence factors on delamination damage are discussed. The results of this research can be applied in composite structure design and life prediction.

Keywords: Composite laminated plate, Delamination damage, Adhesive layer model, Damage extension characteristics.

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