Equation icon  Crack strain energy release rate (Griffith criterion)

 
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Description: During crack growth in a material, strain energy release rate was defined by A. A. Griffith in the following equation. The Griffith Criterion states that for crack growth to occur, this value must be greater than rate of energy absorption.

TeX format: G = \pi\left(\frac{{\sigma_0}^2c}{E}\right)

G {G} = Strain energy release rate (Jm-1) {Jm^{-2}
σ0 {\sigma_0} = Fracture toughness (Pa) {Pa}
c {c} = Crack length (m) {m}
E {E} = Young's modulus (Pa) {Pa}
Keywords: Griffith criterion • crack • strain • fracture • failure • strength • toughness
Categories: Science approaches
Science approaches > Deformation & failure > Plastic deformation
Science approaches > Deformation & failure > Fracture
Properties > Mechanical & thermal > Fracture toughness
Properties > Mechanical & thermal > Impact toughness
Testing, analysis & experimentation > Mechanical testing
Created by: The University of Liverpool
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Date created: 08 July 2010
Date added: 04 August 2010
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Resource ID: 3173