Compressional wave based damage identification by migration technique in concrete beam

摘要：

A migration imaging technique,which is normally used in geophysical prospecting,is proposed to locate and image damages in a concrete beam.In this simulation study,an active diagnostic system with a linear array of actuators/sensors is used to excite/receive compression waves in the beam.The wave field scattered from the damages and sensor array data are taken down by the digital oscilloscope.The sensor array data are then filtered by wavelet filter.A migration technique is lastly adopted to interpret the sensor array data and to visualize the damages.The locations and dimensions of the damages can be visually displayed.Simulated results demonstrate that damages can be successfully identified and the resulting image correlates well with the target damages.

关键词： Concrete beam Damage Piezoelectric sensor Active detecting

作者: Luo Ying Li Zhongfang Wang Ziping Zhao Guoqi

作者单位: Faculty of Science,Jiangsu University,Zhenjiang,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）