Engineering Transactions, 61, 4, pp. 289–300, 2013
10.24423/engtrans.8.2013

Mechanical Properties of AW8S-V Polyester Composite under Various Loading Conditions

Wojciech MOĆKO
Institute of Fundamental Technological Research PAN, Warszawa Motor Transport Institute, Warszawa
Poland

Tadeusz SZYMCZAK
Motor Transport Institute, Warszawa
Poland

Zbigniew L. KOWALEWSKI
Institute of Fundamental Technological Research PAN
Poland

This article presents the results of an analysis of the mechanical properties of the AW8S-V polyester composite reinforced by a roving fabric under tensile loading. The stress-strain curves show an increase of the maximum stress and elastic modulus with increasing strain rate. By contrast, an increase of the temperature led to decrease of the maximum stress and elastic modulus. It is also shown that, failure mechanisms are dependent on the loading type. Shear cracks occurred in the specimens under quasi-static loading whereas composite layers damage was observed under dynamic loading. Temperature increase resulted to stronger fragmentation of the specimens.
Keywords: polyester composite; Hopkinson bar; high strain rate; damage
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Copyright © Polish Academy of Sciences & Institute of Fundamental Technological Research (IPPT PAN).

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DOI: 10.24423/engtrans.8.2013