Multi-mode Damage Detection Methods with Piezoelectric Wafer Active Sensors

被引：28

作者：

Yu, Lingyu ^{[1
]}

Giurgiutiu, Victor ^{[1
]}

机构：

[1] Univ S Carolina, Dept Mech Engn, Columbia, SC 29208 USA

来源：

JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES | 2009年 / 20卷 / 11期

基金：

美国国家科学基金会;

关键词：

PWAS; piezoelectric; multiple modes; impedance; Lamb waves; phased array; damage detection; SHM; NDE; EMBEDDED-ULTRASONICS; LAMB WAVES; PLATE;

D O I：

10.1177/1045389X08096665

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

PWAS are small and non-invasive transducers that can be easily affixed to a structure to interrogate it at will. Their wideband non-resonant properties make them advantageous candidates for multiple modes structural health monitoring (SHM) and non-destructive evaluation (NDE) simply by changing the driving frequencies. This paper presents research results obtained by using PWAS transducer for SHM/NDE. The results are given in the following directions: (1) PWAS operation principles; (2) PWAS electromechanical impedance measurements; (3) PWAS ultrasonic SHM/NDE; and (4) PWAS multi-mode corrosion detection. The analytical methods and experimental results can be successfully used in the design of active SHM systems to be embedded on operational structures, such as aircraft panels.

引用

页码：1329 / 1341

页数：13

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