期刊
JOURNAL OF REINFORCED PLASTICS AND COMPOSITES
卷 31, 期 15, 页码 1037-1044出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/0731684412452679
关键词
Thermal fatigue; self-heating effect; polymeric composites; composites degradation
资金
- Polish Ministry of Science and Higher Education [N N504 282137]
The paper deals with results of experimental study of thermal fatigue of polymeric composites caused by self-heating effect under repeating loading conditions. The tests were carried out on laboratory stand, which provides synchronization of all measured parameters. It was noticed that the process of thermal fatigue consists of three phases and the end of the second phase coincides with critical self-heating temperature, which causes rapid degradation until breakdown. During experiments, composite specimens were loaded for achieving a given temperature value, then cooled and loaded again. Based on experimental results, it was shown that the reloading caused cross-linking process, which causes hardening of a composite. The parametric analysis of self-heating curves was carried out for single-, double- and triple-loaded specimens, and fatigue life for investigated cases was determined and compared.
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