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Investigation of the Debonding Process in Wood Fiber Reinforced Polymer Composites by Acoustic Emission

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Abstract:

Wood fiber reinforced polypropylene composites of different fiber contents without any treatment were prepared, and tensile tests were carried out on injection molded specimens. With increasing fiber content a decrease of the tensile strength was experienced. The weak adhesion at the fiber-matrix interface and the typical composite failures can be seen on SEM pictures. During the tests acoustic emission was monitored to get more information about the damage mechanism. From the AE counts distribution it can be concluded that the maximum number of AE counts decreases simultaneously with the tensile strength in case of the different composites.

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Periodical:

Materials Science Forum (Volumes 537-538)

Pages:

199-206

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.537-538.199

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Online since:

February 2007

Authors:

Z. Kocsis, Tibor Czigány

Keywords:

Acoustic Emission (AE), Debonding, Polymer Composite, Wood Fiber

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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