Abstract
The state of the problem of studying and predicting the long-term strength and durability of polymer composite materials is examined. An original method for load testing for up to three months is proposed, which ensures the destruction of most of the specimens. The method has passed trials and is used in practice for long-term tests of specimens of fiberglass construction reinforcement at temperatures of –30, +23, and +50°C, as well as aircraft plates made of carbon fiberglass. The results of full-scale field tests for up to 17 years are given. Empirical expressions for predicting the long-term strength and durability of building and aviation materials based on glass and carbon plastics are proposed.
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