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Non-destructive monitoring of delamination healing of a CFRP composite with a thermoplastic ionomer interlayer

Authors :
Post, W. (author)
Kersemans, M. (author)
Solodov, I. (author)
Van Den Abeele, K. (author)
Garcia, Santiago J. (author)
van der Zwaag, S. (author)
Post, W. (author)
Kersemans, M. (author)
Solodov, I. (author)
Van Den Abeele, K. (author)
Garcia, Santiago J. (author)
van der Zwaag, S. (author)
Publication Year :
2017

Abstract

A comparative study is performed on the monitoring of delamination healing in CFRP-ionomer sandwich composites by non-destructive techniques and destructive compression testing. Artificial delaminations of various areal dimensions and nature were introduced during production of the composites. The extent of the delamination and the healing thereof was monitored in both air and water-coupled ultrasonic C-scan experiments as well as by the frequency shift of the local defect resonance (LDR). It is shown that the LDR approach can be used to detect the early stage healing of the delaminations while ultrasonic C-scanning techniques are very effective to determine the extent of healing in the final stages of the repair process. A quasi-linear relation was observed between the delaminated area measured with ultrasonic C-scan and the compressive failure strength in destructive testing. This correlation shows the beneficial effect on the compression strength of the delaminated area reduction by on-demand healing.<br />Novel Aerospace Materials

Details

Database :
OAIster
Notes :
English
Publication Type :
Electronic Resource
Accession number :
edsoai.on1357832208
Document Type :
Electronic Resource
Full Text :
https://doi.org/10.1016.j.compositesa.2017.06.018