Effect of the Strain Rate and Temperature on the Physicomechanical Properties of Glass-Fiber-Reinforced Plastics
作者： L. T. Berezhnyts'kyi , V. E. Panasyuk
关键词: Slow strain rate testing 、 Fracture toughness 、 Structural material 、 Strain rate 、 Materials science 、 Glass fiber 、 Dynamic mechanical analysis 、 Polyester resin 、 Composite material 、 Stress intensity factor
摘要: We study the influence of strain rate and temperature on physicomechanical properties structural composites based PN-11 polyester resin. deduce new empirical formulas for dependences characteristics polymeric composite materials. These enable us, any given rate, to determine coefficient g characterizing behavior stress intensity factor KI (or its critical value KIc) as a function testing within indicated range. It is shown that application proposed approach analysis quasibrittle fracture materials, i.e., investigation physical nonlinearity caused by temperature, makes it possible obtain more precise estimates factors under analyzed conditions.
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