The plastic zone and residual stress near a notch and a fatigue crack in HSLA steel

Schlosberg, W. H.; Cohen, J. B.

doi:10.1007/bf02645944

Cited by 16 publications

(2 citation statements)

References 31 publications

(3 reference statements)

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“…Schlosberg and J. B. Cohen [1] have studied the stresses and the plastic deformation simultaneously, in two dimensions, around a notch. L. Kunz [2] has discussed residual stress distribution in the vicinity of fatigue cracks.…”

Section: Introductionmentioning

confidence: 99%

<i>In Situ</i> Stress Measurement Method Based on X-Ray Diffraction under Biaxial Tensile Loading

Wang

Abe

2011

MSF

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The purpose of this investigation is to detect damage from stress distribution in the surface of near pre-crack tip by using X-ray diffraction technique during biaxial tension test. An measurements apparatus to measure stress distribution along pre-crack direction was fabrication by use of a biaxial tensile test device and a stress analyzer based on single exposure technique with one position sensitive proportional counter. Stress distribution with different tensile applied stress ratios were measured during biaxial tension test. As results, the shape of actual stress was keeping increase with increasing tensile applied stress. At maximum applied stress, the residual stress increases with the increasing distance from the crack tip; after reaching a maximum it gradually diminish.

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Section: Introductionmentioning

confidence: 99%

<i>In Situ</i> Stress Measurement Method Based on X-Ray Diffraction under Biaxial Tensile Loading

Wang

Abe

2011

MSF

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“…The X-ray diffraction technique lacks the resolution required at crack tips; still, it provides useful information on average residual stress fields. The residual stress fields have been reported upon removal of applied load [5][6][7][8][9][10]131 in addition to the stress fields ahead of a fatigue crack tip at maximum load [5, 101. Higher strength materials resulted in higher residual stresses 161.…”

Section: Introductionmentioning

confidence: 99%

Residual Stress Fields During Fatigue Crack Growth

Sun

Şehitoğlu

1992

Fatigue Fract Eng Mat Struct

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This study outlines the distinction between (1) residual stresses at an ideal crack tip, undergoing reversed deformation in the absence of crack closure, and (2) additional residual stresses generated due to plasticity induced closure upon fatigue crack growth. Residual stresses resulting from reversed deformation in plane strain were higher compared to the plane stress case, while residual stresses generated behind the crack tip were more significant in plane stress compared to plane strain. The origin of these residual stresses was studied for two specimen geometries over a wide range of loading conditions. We define a new crack tip parameter, Stt as the applied stress level that corresponds to the development of tensile stresses immediately ahead of crack tips. The Stt levels were significantly higher for a fatigue crack than for an ideal crack. We attribute the difference in Stt levels between these two cases to plasticity induced closure. The results demonstrate the importance of the Stt parameter, since the stresses ahead of crack tips could remain compressive even when the crack surfaces are open. Moreover, the study emphasizes the need, when describing fatigue crack growth, to incorporate both the closure concept and residual stress field ahead of a crack tip.

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Stress Measurement at Fatigue Crack Tip Using PSPC

Yoshioka¹

1984

Advances in X-Ray Analysis

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The plastic zone and residual stress near a notch and a fatigue crack in HSLA steel

Cited by 16 publications

References 31 publications

<i>In Situ</i> Stress Measurement Method Based on X-Ray Diffraction under Biaxial Tensile Loading

<i>In Situ</i> Stress Measurement Method Based on X-Ray Diffraction under Biaxial Tensile Loading

Residual Stress Fields During Fatigue Crack Growth

Stress Measurement at Fatigue Crack Tip Using PSPC

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