Mechanical behaviour of an epoxy resin under multiaxial loadings. Part I: Experimental study

Uniaxial and equibiaxial creep tests were performed to study the mechanical behaviour of an epoxy resin. Multiaxial. mechanical behaviour under a cons tant octahedral shear strain-rate was also studied by subjecting specimens to different strain combinations (loading paths). The effect of loading rat es was further investigated by changing the octahedral shear strain rates a long each loading path. Stress envelop es for two octahedral shear strain v alues and the failure stress envelope are discussed and compared with von M ises ellipses.