关键词: 层合板 分层损伤 振动信号 神经网络 损伤检测

Abstract: In this paper, a delamination identification strategy based on vibration signatures by using artificial neural networks is presented Through different nodes with same coordinates, a finite element model for internal delamination is established.The global vibration identification factors of damaged and damage free laminates are obtained by numerical simulation. In the studies, the identification capability for the quantitative prediction of delamination in composites laminates is focused. The results show that the strategy based on the vibration signal measurement and artificial neural networks is efficient to detect delamination defects and there is a good possiblity to apply the proposed method to the helth monitoring of a practical composite structure.

Key words: Composisite laminates