期刊
JOURNAL OF INTELLIGENT MATERIAL SYSTEMS AND STRUCTURES
卷 28, 期 6, 页码 782-798出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/1045389X16657423
关键词
Structural health monitoring; piezoelectric; electromechanical impedance; composites; delamination; damage detection; temperature
资金
- Polish National Science Centre [DEC-2013/11/D/ST8/03355]
- Polish National Centre for Research and Development (NCBIR) [PBS1/B6/8/2012]
This article deals with damage detection process under varying temperature. Carbon fibre-reinforced polymer samples are investigated using electromechanical impedance method. In the article, influence of changing temperature on resistance in electromechanical impedance is investigated. Authors propose new approach for compensation of temperature influence on damage detection. Damage detection is based on root mean square deviation index. Due to strong damping of utilized composite material, low-frequency range is utilized in this research. Real part of electromechanical impedance is measured for frequency band 1-20 kHz. Damage is in the form of artificially made delamination with different sizes. Authors also discuss the problem of influence of structure's boundary condition on low-frequency measurements. In the research, scanning laser vibrometry for guided wave propagation method is utilized for visualization of the introduced delamination.
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