Equation icon  Paris-Erdogan law

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Resource type: Equation
Description: The Paris-Erdogan law states the relationship of the stress intensity factor range to sub-critical crack growth under a fatigue stress regime.

TeX format: {da\over{dN}}= {C\Delta K^{m}}

da {da} = the crack length (m) {m}
dN {dN} = number of load cycles
C {C} and m {m} = material constants
ΔK {\Delta K} = range of stress intensity factor (m) {m}

Keywords: Paris • Erdogan • crack growth • sub-critical crack • fatigue • cyclic
Categories: Science approaches
Science approaches > Deformation & failure > Fatigue
Properties > Mechanical & thermal > Fracture toughness
Properties > Mechanical & thermal > Fatigue strength
Created by: The University of Liverpool
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Date created: 02 July 2010
Date added: 04 August 2010
Resource ID: 3181