In this thesis, the application of piezoelectric impedance technology in detecting two different types of structural damages has been studied, including bolted joint looseness and beam crack.

• 本文研究了压电阻抗技术在螺栓松动检测和结构裂纹检测两方面的应用，在实验中成功检测出这两种结构损伤，而且可以定性判断损伤是否扩展。