3D Finite Element Simulations and Ezperimental Study of A0 Lamb Mode Applied In Defect Detection of Composite Material Structure
(0) Composite materials, with composed advantageous designable material properties, are used first in aeronautical transport industries, and up to now widely in civil application. In this case, the detections and evaluations of the defects in composite materials are of great importance. With guided wave technique performed by air-coupled single sided scan system, the generated acoustical field is modeled in three dimensions with a Finite Element based method, and furthermore the whole scan process, with changing positions of excitation and reception zones, is reproduced in simulation. By comparing prediction results of the scan with experimental one obtained by air-coupled transducers, the severity of the damage can be evaluated, and consequently an insight into the scattering field can be realized. This technique is here applied for the detection of first an impact damage in a composite plate, then of a disbanding defect in a composite tank.
Wei-Na Ke Michel Castaings Meng-Lu Qian
Institute of Acoustics, Tongji University, Shanghai 200092, P.R. China Laboratoire de Mechanique Physique, Universite Bordeaux, Talence, 33400, France
国际会议
2nd China-Korea Ioint Workshop on Ultrasonic Nondestructive Evaluation(第二届中韩双边超声无损评估学术会议)
上海
英文
92-103
2009-10-20（万方平台首次上网日期，不代表论文的发表时间）