Journal of Mechanical Engineering Science · 1963 · 25 citations · 6 references
EngineeringMaterials EngineeringMaterials ScienceMechanical Behavior Of MaterialsMetallic MaterialsStructural MaterialsDamage MechanicsFracture MechanicsPlate AnalysisPlate TheoryCrack Growth AnalysisCrack Growth ModelingCrack Growth RateCrack Growth TestingCracksFracture Of Steel
Fatigue tests at zero mean load have been carried out on copper and nickel-chromium alloy steel plate specimens containing two small coplanar edge cracks. For a wide range of crack lengths it was found that whether or not a crack grew depended on the value of ρ 3 l, where ρ is the semi-range of the alternating stress and l is the edge-crack length. If ρ 3 l is greater than C a crack will grow, if ρ 3 l is less than C a crack will remain dormant. C had a value of 0·6 for copper and of 5·5 for the alloy steel when ρ was in ton/in 2 and l in inches.
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