Title :
Numerical Analysis on Damage-induced Variations of Dynamic Properties in Composites
Author :
Wei, Zhi ; Qu, Yunxia ; Jia, Jihong
Author_Institution :
Sch. of Mech. Eng., Hebei Univ. of Technol., Tianjin
Abstract :
The use of modal parameter analysis for damage detection in composites is conducted. The finite element method for multilayer plates with different delaminations is used to investigate the relationship between damage location and change of modal parameter. Natural frequencies and mode shapes are computed and their variations induced by delaminations at different positions are analyzed. The numerical result is in better agreement with experiment result than that of reference. The mechanism of the mode-dependent energy dissipation of composite plates due to delamination is revealed for the first time. The result allows of the establishment of guideline for location identification of damage
Keywords :
composite materials; delamination; finite element analysis; composite damage detection; damage location identification; damage-induced variations; finite element method; internal delamination; modal parameter analysis; mode-dependent energy dissipation; multilayer plates; numerical analysis; Composite materials; Damping; Delamination; Energy dissipation; Finite element methods; Frequency; Numerical analysis; Optical fiber testing; Shape; Vibration measurement; Composites; Internal delamination; Modal parameters; Numerical analysis;
Conference_Titel :
Intelligent Control and Automation, 2006. WCICA 2006. The Sixth World Congress on
Conference_Location :
Dalian
Print_ISBN :
1-4244-0332-4
DOI :
10.1109/WCICA.2006.1714188
