How should one calculate elastic modulus on this?

08 February 2024 1 8K Report

When calculating elastic modulus of CNM reinforced FRP under cyclic loading, should one calculate it based on the slight increasing slope before the flatbed region or based on the clear and sharp increasing slope?

Дмитрий Лазовский

When calculating before unloading the fiberglass - the initial modulus of elasticity taking into account the work of the matrix. Under cyclic loading - first the initial modulus of elasticity, then the shear area, and then the modulus of elasticity of the fiber

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