제어로봇시스템학회:학술대회논문집
- 2002.10a
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- Pages.86.6-86
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- 2002
Looseness Estimation of Bolts on Truss Structure with PZT Patches
- Jiang, Zhongwei (Yamaguchi University) ;
- Akeuchi, Yasutaka (Yamaguchi University)
- Published : 2002.10.01
Abstract
This work presents a study on development of a practical and quantitative technique for assessment of the healthy state of a structure by piezoelectric impedance-based technique associated with longitudinal wave propagation measuring method. A truss structure embedded with piezoelectric patches is investigated for a fundamental study on estimation of the looseness of bolts in the joint. In order to evaluate the minute mechanical impedance change due to loosening bolt, a harmonic longitudinal elastic wave is applied to the structure by a pair of PZT patches and their electric impedance is measured simultaneously. According to the experimental results, the change of the electric impedance of P...
Keywords