【摘要】 结构损伤的监测、定位和辨识技术是结构健康监测研究中一个热点,也是当前研究的难点之一。针对结构损伤图像辨识研究的难点,分析了时间反转聚焦原理,结合压电阵列技术,提出了基于时间反转聚焦方法的板结构损伤图像监测方法,并进行了实验验证研究。实验结果表明该方法能较为有效地表征损伤特征和范围,实现简单,有助于结构健康监测的实用化。更多还原

【Abstract】 The damage monitoring,location and identification are very important and difficult in structure health monitoring(SHM) research.Based on the analysis of time reversal focus theory and the piezoelectric array technique,an imaging method based on time reversal theory is given for damage location and identification.Experiment validation is done,and the results show that this method can express the character and range of the damage easily and effectively,which is significative to the practicality of SHM technique.更多还原