Recent advances in residual stress measurement

Withers, Philip J.; Turski, Mark; Edwards, L.; Bouchard, P. J.; Buttle, David J.

doi:10.1016/j.ijpvp.2007.10.007

Cited by 239 publications

(147 citation statements)

References 24 publications

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“…Case (v) requires application of non-linear computational mechanics methods to predict residual stresses introduced by manufacturing processes [13] and, for safety-critical applications, validation of the results through application of diverse measurements [7]. Modern measurement techniques [1], [14] have the potential to give a reliable characterisation of the true state of stress in a real structure, but the information is invariably incomplete; that is only some components of the stress tensor are measured to a finite length-scale resolution over a limited spatial sub-domain. For example strain gauges provide surface measurements at a few key locations; neutron diffraction measurements tend to be made on line-scans and synchrotron x-ray measurements can feasibly be made over areas, for example [15].…”

Section: Introductionmentioning

confidence: 99%

Fourier basis for the engineering assessment of cracks in residual stress fields

Bouchard

Budden

Withers

2012

Engineering Fracture Mechanics

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A theoretical basis is presented for determining the significance of a residual stress distribution of arbitrary shape on the crack tip stress intensity factor for a centre-cracked plate as a function of crack length. The Fourier series based approach enables one to increasingly add more spatial definition to the stress field and thereby determine the level of detailed knowledge of the residual stress required to make a reliable assessment of structural integrity.The approach is applied to examples of measured symmetric distributions of residual stresses in welded plates and used to determine the significance of residual stress length-scales in fracture mechanics analysis.Keywords: membrane; bending; self-equilibrated stress; stress intensity factor; structural assessment

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Section: Introductionmentioning

confidence: 99%

Fourier basis for the engineering assessment of cracks in residual stress fields

Bouchard

Budden

Withers

2012

Engineering Fracture Mechanics

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“…It was observed and measured that the cable components experienced some relaxation after dissection. This behavior was similar to residual stress effect in metals [15,16]. To quantify the cross section dimensional relaxation of RSM cable components, an epoxy-encased cable assembly specimen and non-encased cable assembly specimen were prepared, as shown in Fig.…”

Section: Physical Examination Of the Rsm Cablementioning

confidence: 66%

Intermittent Audio Failure Analysis of a Remote Speaker-Microphone for a Two-Way Radio

Leong

Latiff

Yusof

et al. 2015

J Fail. Anal. and Preven.

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This paper presents a case study of an intermittent audio failure analysis of a remote speakermicrophone module for a two-way radio. A root cause analysis was undertaken to identify probable causes of the intermittent failure, followed by a series of experiments to determine the strength and the intermittent audio failure load of cable components and the fully assembled cable. The combined experimental and finite element results demonstrated that the main contributor of the intermittent audio failure was the micro surface cracks on the copper conductor strands. In addition, the combination of the component materials and design of the cable have also contributed to the non-uniform state of residual stress induced in the copper conductors which have reduced the ability of the copper conductors to withstand the normal handling load under the influence of micro surface cracks.

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“…SALSA neutron diffractometer at the Institut Laue Langevin in France was used to measure the residual elastic strain [23]. Residual stress state of the weld was analysed from the measured elastic strain [24]. These measurements were made on the mid cross-sectional plane of a 300-mm sample (plane ABCD) shown in Fig.…”

Section: Measurement Of Residual Stresses Using Neutron Diffractionmentioning

confidence: 99%

Effect of high-pressure rolling followed by laser processing on mechanical properties, microstructure and residual stress distribution in multi-pass welds of 304L stainless steel

Sule

Ganguly

Suder

et al. 2016

Int J Adv Manuf Technol

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Multi-pass fusion welding by a filler material (wire) is normally carried out to join thick steel sections used in most engineering applications. Multiple thermal cycles from a multi-pass weld resulted in a variable distribution of residual stress field across the weld and through the thickness. Presence of tensile residual stresses can be detrimental to the integrity and the service behaviour of the welded joint. In addition to a complex distribution of residual stress state, multipass welds also form dendritic grain structure, which are repeatedly heated, resulting in segregation of alloying elements. In this research, microstructural refinement with modification of residual stress state was attempted by applying post-weld cold rolling followed by laser processing and then cold rolling. The residual stress was determined non-destructively by using neutron diffraction. Post-weld cold rolling followed by laser processing was carried out to induce recrystallization of the cold rolled grains. Microstructural characterisation indicates a significant grain refinement near the capping pass. However, post-weld cold rolling followed by laser processing reinstates the lock-in stress. In this study, it was demonstrated that a complete recrystallized microstructure with compressive state of stress can be formed when a further cold rolling is applied on the laser processed, recrystallized microstructure.

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Recent advances in residual stress measurement

Cited by 239 publications

References 24 publications

Fourier basis for the engineering assessment of cracks in residual stress fields

Fourier basis for the engineering assessment of cracks in residual stress fields

Intermittent Audio Failure Analysis of a Remote Speaker-Microphone for a Two-Way Radio

Effect of high-pressure rolling followed by laser processing on mechanical properties, microstructure and residual stress distribution in multi-pass welds of 304L stainless steel

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