Structure damage detection method based on modal strain energy

摘要：

A newly structure damage detection method based on modal strain energy is presented.This method can predict precisely locations and severities of damage in three-dimensional structure only making use of pre-and post-damage modal parameters that are available for only three modes of vibration.To verify the utility of the proposed method,six damage cases are simulated with a three-dimensional frame structure finite numerical model(FEM)and use the proposed method to detect these cases.Results illustrate that the proposed method is accurate in damage localization and preliminary in severity estimation.This method is simple and hopeful to be employed into the offshore platform damage detection.

关键词： structure vibration nondestructive detection damage detection modal strain energy

作者: F.Y. Yang Y.C. Yang M. Zhang

作者单位: Engineering College,Ocean University of China,Qingdao,China;Offshore Oil Engineering (Qingdao) Co.,L Engineering College,Ocean University of China,Qingdao,China

会议类型: 国际会议

会议名称: The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)

会议地点: 重庆·南京

会议语种:英文

在线出版日期: 2007-05-01（万方平台首次上网日期，不代表论文的发表时间）