Paper number 740
|MONITORING ACOUSTIC EMISSION DURING TENSILE LOADING OF THERMOPLASTIC COMPOSITES MATERIALS|
Laksimi, S. Benmedakhene & L. Bounouas
LG2mS URA CNRS UPRES A 6066, Devisions Polymères et Composites
Université de Technologie de Compiègne(UTC)
Centre de recherche Royallieu BP.20529-60205 Compiègne cedex
|Summary||Advance, parameters based acoustic emission AE techniques have been developed to evaluate damage and micro-failures in thermoplastic composites materials. This paper reports on an experimental investigation on mechanical and acoustic emission behaviour of polypropylene glass fibre composites that were tested in tension. An advanced digital signal processing techniques were also employed to identified fibre and matrix failure, pseudo-delamination, splitting (or cracking along fibres), and friction. These can be discriminated on the basis of different acoustic emission parameters. It is found that the tree parameters of acoustic emission data, the peak amplitude, event duration and event energy are the best indicators for characterisation the damage mechanics.
||Keywords|| damage mechanics, glass-fibres, polypropylene, acoustic emission (AE), tensile test, acoustics parameters, numerical acoustic system.
Theme : NDE and Reliability ; Acoustic Emission
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