Abstract
The actual tasks of the mechanics of composite materials are studies of the laws of deformation, fracture and mechanical behavior of composites under the influence of high and low (working) temperatures, climatic factors and working dirty environments. No less urgent task is to study issues related to the analysis of the conditions of failure, the accumulation of damage and the survivability of composites during cyclic loads. In connection with the above tasks, the paper presents the results of experimental studies of the effect of high temperatures on the fatigue life of aviation structural fiberglass plastics. Studies were conducted at the Center for Collective Use of the Center of Experimental Mechanics PNRPU. The objects of the study were samples of structural fiberglass for aerospace purposes, which were manufactured by serial technology of autoclave molding from glass fiber prepreg.In the course of study, static mechanical characteristics were determined (refined), temperature dependencies of static tensile strength and elastic modulus were obtained, temperature dependences of fatigue life were obtained, and conditions for changing the fracture mechanisms of fiberglass samples were analyzed.
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