Damage Detection Based on Power Dissipation Measured with PZT Sensors through the Combination of Electro-Mechanical Impedances and Guided Waves

Sensors

Enrique Sevillano¹  Ricardo Perera¹  Rui Sun¹ 

[1] Department of Structural Mechanics, Technical University of Madrid, C/ José Gutiérrez Abascal, 2, Madrid 28006, Spain;

关键词: structural health monitoring;    PZT sensors;    electro-mechanical impedance;    guided wave;    electro-mechanical power dissipation;    non-destructive testing;   

DOI  :  10.3390/s16050639

来源: DOAJ

【 摘 要 】

The use of piezoelectric ceramic transducers (such as Lead-Zirconate-Titanate—PZT) has become more and more widespread for Structural Health Monitoring (SHM) applications. Among all the techniques that are based on this smart sensing solution, guided waves and electro-mechanical impedance techniques have found wider acceptance, and so more studies and experimental works can be found containing these applications. However, even though these two techniques can be considered as complementary to each other, little work can be found focused on the combination of them in order to define a new and integrated damage detection procedure. In this work, this combination of techniques has been studied by proposing a new integrated damage indicator based on Electro-Mechanical Power Dissipation (EMPD). The applicability of this proposed technique has been tested through different experimental tests, with both lab-scale and real-scale structures.

【 授权许可】

Unknown