https://www.elibrary.ru/title_about_new.asp?i Materials physics and mechanics Механика и физика материалов 1605-8119 13 10.18720/MPM.3222017_13 Relaxation in resins with low-frequency mechanical cycling Relaxation in resins with low-frequency mechanical cycling Ivlev Sigachyov Fomin Yudin Mordovia State University N.P. Ogareva 15 11 2017 32 2 207 212

Hardened polyester and epoxy resins were tested for the relaxation of mechanical stresses, depending on the initial stress (2.6 ÷ 24MPa), time and temperature (15 ÷ 45 °C). The dependence of stress on time in the relaxation of resins in the investigated ranges of mechanical stresses is described by the logarithmic function characteristic for stress relaxation in crystalline solids (metals)

 epoxy resin polyester resin relaxation mechanical stress