Abstract: | Problems of deformation in amorphous, glass-like polymers are considered. The deformation and strength properties of PMMA (polymethyl methacrylate) were studied, for different temperatures and conditions of deformation. It was established that the long-term resistance to deformation of glass-like polymers subjected to forced elastic deformation, as judged by the time lapse to "neck" formation, is described by a longevity equation, allowance being made for the displacement of the origin with respect to the coordinates.Yu. V. Mirgorod participated in the experimental part of this work.Tambovsk Institute of Chemical Machine Construction and Experimental Laboratory of Polymer Physics, V. I. Lenin State Pedagogic Institute, Moscow. Translated from Mekhanika Polimerov, No. 4, pp. 717–720, July–August, 1972. |