Plane-stress creep of a glass-reinforced plastic
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The creep behavior of an orthotropic glass-reinforced plastic based on Polimal'-109 resin and 19-S4 glass fabric is described. A special device for testing tubular specimens in plane-stress creep has been designed. The loading conditions include combined torsion and tension, internal pressure, and loading along the principal directions of anisotropy. Constitutive equations describing creep and recovery are proposed for the two-dimensional case.
KeywordsAnisotropy Load Condition Constitutive Equation Internal Pressure Creep Behavior
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