Self-diagnostic capabilities of piezoelectric transducers using the electromechanical impedance

被引：0

作者：

Bach, M. ^{[1
]}

Fritzen, C. -P. ^{[1
]}

Eckstein, B. ^{[1
]}

Speckmann, H. ^{[1
]}

机构：

[1] EADS Innovat Works, D-28199 Bremen, Germany

来源：

STRUCTURAL HEALTH MONITORING 2007: QUANTIFICATION, VALIDATION, AND IMPLEMENTATION, VOLS 1 AND 2 | 2007年

关键词：

D O I：

暂无

中图分类号：

V [航空、航天];

学科分类号：

08 ; 0825 ;

摘要：

In the present work it is shown that the electromechanical impedance (EMI) method is in principle able to perform self-diagnostic sensor tests in a relative measurement. Absolute measurements can be used only in exceptional cases. For this reason several tests on identical specimens are conducted in order to degrade the bond-line or the sensor. These tests were carried Out in harsh environmental conditions as well as by mechanical and electrical overloads. Furthermore an imperfect bonding of the sensor ab initio is Simulated. The metallic specimen itself is not harmed in the process. Analysis is done mainly using the imaginary part of the electromechanical admittance by comparing the slope.

引用

页码：1931 / 1938

页数：8

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