Abstract
In the whole life time of carbon fiber reinforced plastic (CFRP) component, it will inevitably suffer from low-energy impact (LEI) loads, which may lead to barely visible impact damage (BVID). Thus, non-destructive testing of impact damage has attracted more and more attention. In this paper, the detection of BVID in CFRP plates induced by LEI is investigated by means of nonlinear ultrasound with the help of signal sparse reconstruction with overcomplete dictionary obtained from the training of the acquired responses of the undamaged component. A damage inspection and structural health monitoring (SHM) framework for the CFRP component is proposed. The intact CFRP plate specimen and specimens with 12- and 16-J BVID were tested using the proposed method. Experimental results have shown that all the BVIDs could be detected effectively using a short segment of response signal. The proposed method has potential application in instrumentation design for unsupervised damage inspection and SHM during daily maintain in the service of the CFRP material.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
