Abstract
The effect of the form of radiation (reactor andγ-radiation, X-rays and ultraviolet light) and absorbed energy on the strength of polymethyl methacrylate was studied. It was shown that the strength of this polymer depends in the first place on the size of radiation-induced defects and not on their distribution across the specimen thickness. When therefore the absorbed radiation energy is nonuniformly distributed along the specimen cross section, the mechanical properties of irradiated materials are determined by the radiation dose absorbed by the specimen surface layers.
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