Journal
COMPOSITE STRUCTURES
Volume 225, Issue -, Pages -Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.compstruct.2019.111161
Keywords
Composite laminates; Double cantilever beam; Delamination; Ultrasonic guided wave
Categories
Funding
- National Natural Science Foundation of China [11520101001, 11872025, 11672279]
- Jiangsu Province Science Foundation for Youths [BK20170518, BK20180878]
- Natural Science Foundation of Colleges and Universities in Jiangsu Province [18KJB560004]
- Foundation for Advanced Talent of Jiangsu University [16JDG027]
Ask authors/readers for more resources
In is work, the delamination of composite double cantilever beams (DCBs) was detected and monitored using ultrasonic guided wave. The composite DCBs were prepared, and the experimental platform for damage detection based on ultrasonic guided wave was built up. The damage response signal was obtained from the composite DCBs by piezoelectric sensor (PZT). The signal was processed by Hilbert transform (HT), Fourier transform (FFT) and wavelet transform (CWT). The effective linear guided wave parameters and nonlinear guided wave parameters are extracted to characterize the delamination length. The experimental results show that the occurrence time and duration of high-order harmonics are related to the length of delamination. High-order harmonics are found in the response signal, which is due to the non-linear contact between the guided wave and the closed microcracks in the delamination region. It verifies that the main source of harmonics in the laminated composite structure is the non-linear acoustic contact.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available