Vibratory stress relief—an investigation of the torsional stress effect in welded shafts

Munsi, A.S.M.Y.; Waddell, A.J.; Walker, C.A.

doi:10.1243/0309324011514610

Cited by 25 publications

(15 citation statements)

References 12 publications

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“…[1][2][3][4][5][6][7] There are many ways to reduce potentially harmful residual stress to prolong service life, such as annealing, [8,9] pre-stretching, [6] and shakedown. [10][11][12] For the purpose of accurate assessment of fatigue lifetime, not only the magnitude of the residual stresses, but also their stability factors and evolution during service are of great importance. [13] Numerous researchers have reported significant relaxation during cyclic loading, [7,[14][15][16][17][18][19][20][21][22][23][24] with redistribution of residual stresses occurring after the first loading cycle followed by minimal further relaxation during subsequent cycles.…”

Section: Introductionmentioning

confidence: 99%

The Residual Stress Relaxation Behavior of Weldments During Cyclic Loading

Qian

Chumbley

Karakulak

et al. 2013

Metall Mater Trans A

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Accurate measurement of residual stress is necessary to obtain reliable predictions of fatigue lifetime and enable estimation of time-to-facture for any given stress level. In this article, relaxation of welding residual stresses as a function of cyclic loading was documented on three common steels: AISI 1008, ASTM A572, and AISI 4142. Welded specimens were subjected to cyclic bending (R = 0.1) at different applied stresses, and the residual stress relaxation existing near the welds was measured as a function of cycles. The steels exhibited very different stress relaxation behaviors during cyclic loadings, which can be related to the differences in the microstructures of the specimens. A phenomenological model, which treats dislocation motion during cyclic loading as being analogous to creep of dislocations, is proposed for estimation of the residual stress relaxation. Accurate measurement of residual stress is necessary to obtain reliable predictions of fatigue lifetime and enable estimation of time-to-facture for any given stress level. In this article, relaxation of welding residual stresses as a function of cyclic loading was documented on three common steels: AISI 1008, ASTM A572, and AISI 4142. Welded specimens were subjected to cyclic bending (R = 0.1) at different applied stresses, and the residual stress relaxation existing near the welds was measured as a function of cycles. The steels exhibited very different stress relaxation behaviors during cyclic loadings, which can be related to the differences in the microstructures of the specimens. A phenomenological model, which treats dislocation motion during cyclic loading as being analogous to creep of dislocations, is proposed for estimation of the residual stress relaxation. Keywords Surfaces and Interfaces, Thin Films Nanotechnology

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Section: Introductionmentioning

confidence: 99%

The Residual Stress Relaxation Behavior of Weldments During Cyclic Loading

Qian

Chumbley

Karakulak

et al. 2013

Metall Mater Trans A

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“…On the spot-welded shafts the residual stresses were decreased significantly at a very low level of vibration. Furthermore, Munsi et al (2001c) studied on welded specimens that were processed after being cooled to room temperature, with varying amplitude of given stress and vibration period. An increase in the applied stress led to a significant decrease in the residual stresses.…”

Section: Figmentioning

confidence: 99%

A review on techniques for improving the mechanical properties of fusion welded joints

Kalpana¹,

Rao²,

Rao³

2017

10.5267/j.esm

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This paper presents the effect of Post Weld Heat Treatment (PWHT), pulsed current welding, hybrid welding and vibratory assisted welding in the weld quality, residual stresses and mechanical properties of welded joints. At last, vibratory assisted welding has been suggested to enhance the mechanical properties of welded joints by overcoming the drawbacks in the above stated techniques. Past results showed that the welded test specimens under vibratory conditions exhibited improvements in mechanical properties than the arc welding without vibrations. Finally, some literature gaps are clearly identified and these gaps could help the future generation researchers to do work in the new direction.

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“…According to the literature [1], compared with the traditional way of eliminating residual stress such as natural aging and thermal aging, in twenty-first century, the technology of VSR has become an effective energy-saving and environmental protection technology. Foreign scholars, Kelso and Walker C A, have made a comprehensive elaboration on the mechanism of low frequency VSR [2][3][4]. The domestic professor Song Tianmin explained the mechanism of VSR by experiment from the angle of energy transformation in dislocation motion [5].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Simulation Technology of High Frequency Vibratory Stress Relief Treatment for Complex Thin -Walled Workpiece

Zhao¹,

Zhang²,

Wang³

2018

MATEC Web Conf.

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The current research based on vibratory stress relief (VSR) is focused on low frequency excitation, but it is seldom mentioned for complex thin-walled workpiece with higher natural frequency. In this paper, the mechanism of high frequency VSR is studied by microdynamic theory. Aiming at the rotating frame of complex thin-walled workpiece in aerospace equipment, the high frequency VSR numerical simulation is carried out by finite element software Abaqus, the modal analysis technology and harmonic response analysis technology are proposed, and the exciting force, excitation frequency and other important parameters are determined. The simulation results are analyzed to verify the superiority of high frequency VSR to eliminate residual stresses of complex thin-walled workpieces, and provide a theoretical basis for optimal selection of excitation parameters for high frequency VSR.

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Vibratory stress relief—an investigation of the torsional stress effect in welded shafts

Cited by 25 publications

References 12 publications

The Residual Stress Relaxation Behavior of Weldments During Cyclic Loading

The Residual Stress Relaxation Behavior of Weldments During Cyclic Loading

A review on techniques for improving the mechanical properties of fusion welded joints

Modeling and Simulation Technology of High Frequency Vibratory Stress Relief Treatment for Complex Thin -Walled Workpiece

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