Air fatigue of notched 1018 steel in the endurance limit range

Hartt, William H.; Fluet, Joseph E.; Henke, Thomas

doi:10.1007/bf02658819

Cited by 2 publications

(1 citation statement)

References 16 publications

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“… Weibull analysis of fatigue life data of 7075‐T651 aluminium alloy and 1018 steel in air showing fatigue threshold. Data taken from Refs 10 and11. …”

Section: Application To Datamentioning

confidence: 99%

Statistical aspects of fatigue life and endurance limit

Wallin

2010

Fatigue Fract Eng Mat Struct

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A B S T R A C T Based on the assumption that the fatigue life and endurance limit is mainly controlled by the materials particle distribution, different possible statistical distributions to describe the fatigue have been assessed. Some distributions lead to high statistical uncertainty or physically non-realistic size effects. It is shown that, if the maximum particle size distribution is described by a Frechet distribution, both the fatigue life, as well as the endurance limit are described by a Weibull distribution. N O M E N C L A T U R EC 1 and C 2 = constants K 0 = normalising constant n = number of particles or sample sizē n = average number of particles n Vo = average number of particles in reference volume N = number of cycles N 0 = normalising parameter N c = critical fatigue life N eff = effective fatigue life corresponding to crack growth N f = fatigue life N i = fatigue life corresponding to initiation m = exponent p = discrete probability P = cumulative probability P n = probability of having n particles in sample P rmax = probability that the maximum particle size is smaller or equal to r max r = rank number or particle sizē r = average particle size r 0 = normalising particle size r c = critical particle size r limit = limiting particle size r max = maximum particle size in sample r ref = reference particle size V = sample volume V 0 = reference volume α = Gumbel location parameter β = Gumbel scale parameter γ = constant ≈ −0.577216 a = crack extension Correspondence: K. Wallin.

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“… Weibull analysis of fatigue life data of 7075‐T651 aluminium alloy and 1018 steel in air showing fatigue threshold. Data taken from Refs 10 and11. …”

Section: Application To Datamentioning

confidence: 99%

Statistical aspects of fatigue life and endurance limit

Wallin

2010

Fatigue Fract Eng Mat Struct

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Fractographic Characterization of the Effect of Inclusions on Fatigue Crack Propagation

Wilson

1981

Fractography and Materials Science

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The fracture surfaces of fatigue crack propagation (FCP) test specimens of ASTM plate steel Grades A516-70, A533B-1, and A514F are characterized primarily by using the scanning electron microscope. The evaluation involved two plates of each grade with different inclusion structures. These had been produced by conventional steel-making techniques or by calcium treatment. The FCP tests were performed in the six possible testing orientations for each material and quality level. In each grade, the Type II manganese sulfide and alumina inclusions associated with the conventional quality plate resulted in faster FCP growth rates, particularly in the through-thickness testing orientations (S-T, S-L). Furthermore, the group nature of the occurrence of these inclusions was found to be the primary influence on FCP behavior. In addition, these inclusion formations were found to give greater anisotropy of FCP behavior for the steels of the higher yield strength, principally because of the fracture mode of the material between inclusions of a particular formation. For all steel grades, the calcium treatment led to improved levels and isotropy of FCP resistance.

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Air fatigue of notched 1018 steel in the endurance limit range

Cited by 2 publications

References 16 publications

Statistical aspects of fatigue life and endurance limit

Statistical aspects of fatigue life and endurance limit

Fractographic Characterization of the Effect of Inclusions on Fatigue Crack Propagation

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