Effects of negative stress ratios on crack propagation behavior after an overload

被引：8

作者：

Makabe, C ^{[1
]}

McEvily, AJ

Purnowidodo, A

Yamauchi, A

机构：

[1] Univ Ryukyus, Dept Engn Mech, Nishihara, Okinawa 9030213, Japan

[2] Univ Connecticut, Dept Met, Storrs, CT 06269 USA

来源：

INTERNATIONAL JOURNAL OF MODERN PHYSICS B | 2003年 / 17卷 / 8-9期

关键词：

D O I：

10.1142/S0217979203019356

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A study of the effect of an overload on fatigue crack propagation behavior has been carried out at baseline R-values of 0, -1, and -1.5. The usual delayed retardation event was observed at R = 0. At R = -1 the degree of retardation was reduced. At R = -1.5 the fatigue crack growth rate was observed to accelerate after the overload. These behaviors were related to the extent of crack closure, which existed following the overload. The rate of fatigue crack propagation for all loading conditions was correlated with the parameter DeltaK(eff) - DeltaK(effth), where DeltaK(effth) is the effective value of the stress intensity factor range at threshold.

引用

页码：1580 / 1586

页数：7

共 4 条

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[2]

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[3] THE NATURE OF THE 2 OPENING LEVELS FOLLOWING AN OVERLOAD IN FATIGUE CRACK-GROWTH [J].

MCEVILY, AJ ;

YANG, Z .

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[4]

YESHING W, 1995, FATIGUE FRACT ENG M, V18, P917

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