Impact Damage Detection on the Laminated Composite
Impact damage detection is critical for the utilization of composite materials.This paper investigates the applicability of active Lamb wave to composite damage monitoring.First,a time-reversal method has been adapted to guided-wave propagation to improve the detectability of local defects in composite plate structures.Second,a damage index (DI) method using a pair of sensors is introduced to generate index,which can be used to characterize the damage extent around the diagnostic path.Both of the methods proposed are validated through experimental studies in which different impact damages are generated by the falling a steel projectile on a laminated composite plate.The result showed that the methods may provide good correlation with the impact damage in the laminated composite plate.
Structural health monitoring Lamb wave Impact damage Piezoelectric sensor
Ming Li Yingchun Xiao Guoqiang Liu
Aeronautics Science and Technology Key Laboratory of Full Scale Aircraft Structure and Fatigue, China Aircraft Strength Research Institute, No.86 of Dianzi 2nd Road, Xi’an 710065 Shaanxi, China
国际会议
西安
英文
681-690
2013-11-25（万方平台首次上网日期，不代表论文的发表时间）