Growth behavior of short surface fatigue cracks in 2 1/4 Cr-1 Mo steel

Chang Min Suh; Robert O. Ritchie; Young Goo Kang

doi:10.1007/BF02953592

Growth behavior of short surface fatigue cracks in 2 1/4 Cr-1 Mo steel

Chang Min Suh, Robert O. Ritchie, Young Goo Kang

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

2 Citations (Scopus)

Abstract

Fatigue tests by axial loading (R-0.05) were carried out to investigate short fatigue crack growth behavior in 2 1/4 Cr-1 Mo steel at room temperature using smooth and a small notched flat specimen. All the data of the fatigue crack growth rate in the present tests were analyzed as a function of the stress intensity factor equation in conjunction with crack closure behavior. Analysis was performed accounting for the relation of surface effective stress range, Ua and depth effective stress range, Ub. In the case of isotropic crack growth properties, Ub=(ΔK_ta/ΔK_tb) ·Ua. By use of Ub obtained from the analysis, crack growth rates to surface direction coincide with those of depth direction. © 1989 The Korean Society of Mechanical Engineers (KSME).

Original language	English
Pages (from-to)	78-85
Journal	KSME Journal
Volume	3
Issue number	2
DOIs	https://doi.org/10.1007/BF02953592
Publication status	Published - Sept 1989
Externally published	Yes

Research Keywords

Aspect Ratio
Beachmark Method
Crack Opening Displacement
Effective Stress Range Ratio
Semi-Elliptical Crack
Short Crack
Surface Replica

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10.1007/BF02953592

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title = "Growth behavior of short surface fatigue cracks in 2 1/4 Cr-1 Mo steel",

abstract = "Fatigue tests by axial loading (R-0.05) were carried out to investigate short fatigue crack growth behavior in 2 1/4 Cr-1 Mo steel at room temperature using smooth and a small notched flat specimen. All the data of the fatigue crack growth rate in the present tests were analyzed as a function of the stress intensity factor equation in conjunction with crack closure behavior. Analysis was performed accounting for the relation of surface effective stress range, Ua and depth effective stress range, Ub. In the case of isotropic crack growth properties, Ub=(ΔKta/ΔKtb) ·Ua. By use of Ub obtained from the analysis, crack growth rates to surface direction coincide with those of depth direction. {\textcopyright} 1989 The Korean Society of Mechanical Engineers (KSME).",

keywords = "Aspect Ratio, Beachmark Method, Crack Opening Displacement, Effective Stress Range Ratio, Semi-Elliptical Crack, Short Crack, Surface Replica",

author = "Suh, {Chang Min} and Ritchie, {Robert O.} and Kang, {Young Goo}",

year = "1989",

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doi = "10.1007/BF02953592",

language = "English",

volume = "3",

pages = "78--85",

journal = "KSME Journal",

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publisher = "Korean Society of Mechanical Engineers",

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TY - JOUR

T1 - Growth behavior of short surface fatigue cracks in 2 1/4 Cr-1 Mo steel

AU - Suh, Chang Min

AU - Ritchie, Robert O.

AU - Kang, Young Goo

PY - 1989/9

Y1 - 1989/9

N2 - Fatigue tests by axial loading (R-0.05) were carried out to investigate short fatigue crack growth behavior in 2 1/4 Cr-1 Mo steel at room temperature using smooth and a small notched flat specimen. All the data of the fatigue crack growth rate in the present tests were analyzed as a function of the stress intensity factor equation in conjunction with crack closure behavior. Analysis was performed accounting for the relation of surface effective stress range, Ua and depth effective stress range, Ub. In the case of isotropic crack growth properties, Ub=(ΔKta/ΔKtb) ·Ua. By use of Ub obtained from the analysis, crack growth rates to surface direction coincide with those of depth direction. © 1989 The Korean Society of Mechanical Engineers (KSME).

AB - Fatigue tests by axial loading (R-0.05) were carried out to investigate short fatigue crack growth behavior in 2 1/4 Cr-1 Mo steel at room temperature using smooth and a small notched flat specimen. All the data of the fatigue crack growth rate in the present tests were analyzed as a function of the stress intensity factor equation in conjunction with crack closure behavior. Analysis was performed accounting for the relation of surface effective stress range, Ua and depth effective stress range, Ub. In the case of isotropic crack growth properties, Ub=(ΔKta/ΔKtb) ·Ua. By use of Ub obtained from the analysis, crack growth rates to surface direction coincide with those of depth direction. © 1989 The Korean Society of Mechanical Engineers (KSME).

KW - Aspect Ratio

KW - Beachmark Method

KW - Crack Opening Displacement

KW - Effective Stress Range Ratio

KW - Semi-Elliptical Crack

KW - Short Crack

KW - Surface Replica

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U2 - 10.1007/BF02953592

DO - 10.1007/BF02953592

M3 - RGC 21 - Publication in refereed journal

SN - 1738-494X

VL - 3

SP - 78

EP - 85

JO - KSME Journal

JF - KSME Journal

IS - 2

ER -

Growth behavior of short surface fatigue cracks in 2 1/4 Cr-1 Mo steel

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Research Keywords

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