因此，可以得出结论，钢梁裂缝损伤通过监测压电阻抗测量的变化可以被识别。
Therefore, it is concluded that crack damage of steel beams can be identified by monitoring the variations of piezoelectric impedance measurements.
把结构遭受裂缝损伤的应变能变化量作为损伤指标，提出一种新的无损裂缝识别方法。
Strain energy change is used as damage index and a nondestructive crack detection method is proposed.
结果表明，信号幅值对裂缝损伤的变化最为敏感，且随损伤程度的不断增加呈现出不断衰减的趋势。
The results show that the amplitude of the stress signal is the best sensitive to the change of damage among the parameters and it will gradually decay with the increase of damage degree.
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