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Volume 10, Issue 5, 2001 Effect of Consolidation Degree on the Failure Generated Acoustic Emission Response of Discontinuous Glass Fibre Mat-Reinforced Polypropylenes Gabor Romhany1, Tibor Czigany1, Oleg I. Benevolenski2 and Jozsef Karger-Kocsis2* 1Department of Polymer Engineering and Textile Technology, Budapest University of Technology and Economics, H-1111 Budapest, Hungary 2Institute for Composite Materials, Ltd., University of Kaiserslautern, P.O.Box 3049, D-67653 Kaiserslautern, Germany *Author to whom correspondence should be addressed, (e-mail: karger@ivw.uni-kl.de, fax:+49-631-2017198) (Received 6/01; accepted 10/01)
The failure behaviour of partially and fully consolidated discontinuous glass fibre (GF) mat-reinforced thermoplastic polypropylene (GMT-PP) of various densities but with the same GF content was studied using the acoustic emission (AE) technique. The AE amplitude histograms were used to trace changes in the failure mode versus loading history and consolidation degree. AE amplitudes were clustered in three groups representing fibre debonding, pull-out and fracture events the occurrence of which was substantiated by fractografic inspection. |
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