期刊
JOURNAL OF COMPOSITE MATERIALS
卷 57, 期 17, 页码 2739-2750出版社
SAGE PUBLICATIONS LTD
DOI: 10.1177/00219983231178087
关键词
Composites; ultra-violet; experimental study; stochastic modeling; progressive damage modeling
The main objective of this study is to investigate the mechanical degradation of fiber reinforced composites exposed to sunlight under natural conditions on a long-term basis. Experimental study and theoretical modeling are conducted to compare the results and evaluate the destructive influence of sunlight on the mechanical performance of polymeric composites through stochastic scenarios.
The widespread use of fiber reinforced composites (FRP) in outdoor applications has prompted the question that whether ultraviolet radiation could wreak havoc on their lifespan. The main objective of this study is to investigate mechanical degradation of FRPs exposed to sunlight under natural circumstances on the long-term basis. On the one hand, experimental study is performed, before and after exposure, on laminated composites with different lay-up configurations cut from FRP pipes stored in outdoor space for a 1 year. On the other hand, a simple theoretical modeling in the form of user-friendly engineering tool is developed to estimate the residual ultimate tensile strength of laminated composites after exposure to sunlight. The destructive influence of sunlight on the mechanical performance of polymeric composites is taken into account through three different stochastic scenarios. Thus, stochastic modeling is implemented and the results are compared with experimental observations.
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