Acoustic Emission Characterization of Matrix Damage Initiation in Woven CFRP Composites


In this paper, an experimental investigation is performed using acoustic emission (AE) technique to study the behaviour of crack initiation and propagation of woven carbon fibre reinforced plastic (CFRP) composites under static tensile loading. Three laminates with three plies each were manufactured and tested under tensile static loading. Damage was being monitored using AE technique with instantaneous AE hits energies being used as the damage parameter. Results showed that angle ply laminates experienced crack initiations at about 50% of ultimate tensile strength whereas cross ply laminates and non-conventional angle ply laminates having one cross ply laminate experienced initiation of cracks at about a third of ultimate tensile strength. This early cracks initiation is believed to be caused by the presence of 90° plies that cannot take much load transversely.

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M. Bourchak, A. Khan, S. Badr and W. Harasani, "Acoustic Emission Characterization of Matrix Damage Initiation in Woven CFRP Composites," Materials Sciences and Applications, Vol. 4 No. 9, 2013, pp. 509-515. doi: 10.4236/msa.2013.49062.

Conflicts of Interest

The authors declare no conflicts of interest.


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