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	A coupled approach for damage detection of framed structures using piezoelectric signature
	Chen WQ(陈伟琪)
	2007
关键词	PIEZO-IMPEDANCE TRANSDUCERS WAVE-PROPAGATION ADMITTANCE SIGNATURES DYNAMIC ANALYSIS ACTIVE SENSORS IDENTIFICATION ACTUATOR VIBRATION TRUSSES PATCHES
英文摘要	High-frequency electro-mechanical impedance (EMI) signature is very sensitive to the local incipient damages in structures. However, extensive information on the nature of damages may not be available via EMI technique in its conventional non-model-based form. On the other hand, there is also little analytical work on the vibration modes of complex structures at ultrasonic frequencies. In this paper, a coupled approach combining EMI technique and a reverberation matrix method is proposed to quantitatively correlate damages in framed structures with high-frequency signature for structural health monitoring. The structural members are modeled as Timoshenko beams for flexural motion and as the classical longitudinal rods for axial motion. The PZT wafers, which are bonded to the beams, are also treated as one-dimensional in an axial vibration. A shear lag model is adopted to simulate the interfacial bonding between PZT patches and the host beam. An analytical expression for impedance (or admittance) related to response of the coupled model of PZT patch-bonding layer host frame system is derived for the first time. Comparison study is presented with other established methods and theories. Based on this analysis, EMI signatures are extracted to identify the damages in framed structures theoretically. (C) 2007 Elsevier Ltd. All rights reserved.
语种	英语
内容类型	期刊论文
源URL	[http://dspace.xmu.edu.cn/handle/2288/60798]
专题	海洋环境－已发表论文
推荐引用方式 GB/T 7714	Chen WQ. A coupled approach for damage detection of framed structures using piezoelectric signature[J],2007.
APA	陈伟琪.(2007).A coupled approach for damage detection of framed structures using piezoelectric signature..
MLA	陈伟琪."A coupled approach for damage detection of framed structures using piezoelectric signature".(2007).

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