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- Title
STUDY OF COMPOSITE PLATE DAMAGES USING EMBEDDED PZT SENSORS WITH VARIOUS CENTER FREQUENCY.
- Authors
KYOUNG-TAK KANG; HEOUNG-JAE CHUN; JU-HYUN SON; JOON-HYUNG BYUN; MOON-KWANG UM; SANG-KWAN LEE
- Abstract
This study presents part of an experimental and analytical survey of candidate methods for damage detection of composite structural. Embedded piezoceramic (PZT) sensors were excited with the high power ultrasonic wave generator generating a propagation of stress wave along the composite plate. The same embedded piezoceramic (PZT) sensors are used as receivers for acquiring stress signals. The effects of center frequency of embedded sensor were evaluated for the damage identification capability with known localized defects. The study was carried out to assess damage in composite plate by fusing information from multiple sensing paths of the embedded network. It was based on the Hilbert transform, signal correlation and probabilistic searching. The obtained results show that satisfactory detection of defects could be achieved by proposed method.
- Subjects
PIEZOELECTRICITY; FREQUENCY changers; ELECTRIC motors; STRAINS &; stresses (Mechanics); PROBABILISTIC number theory; HILBERT transform
- Publication
International Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Applied Physics, 2010, Vol 24, Issue 15/16, p2398
- ISSN
0217-9792
- Publication type
Article
- DOI
10.1142/S021797921006499X