A Deconvolution Method for the Mapping of Residual Stresses by X-Ray Diffraction

Tajdary, Pouya; Morin, Léo; Braham, C.; González, G.

doi:10.1007/s11340-022-00839-5

Cited by 3 publications

(2 citation statements)

References 22 publications

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“…119,121) Other works have focused on the simulation of fracture or residual stress in RCS-processed multimodal materials. 120,[127][128][129]…”

Section: Repetitive Corrugation and Straightening (Rcs)mentioning

confidence: 99%

Heterostructured Materials by Severe Plastic Deformation: Overview and Perspectives

Romero-Resendiz,

Naeem,

Zhu

2023

Mater. Trans.

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Heterostructured materials (HSMs) constitute heterogeneously distributed soft and hard zones with a mismatch in mechanical or physical properties of at least 100% between them. A synergistic effect resulting from the interactive coupling between the heterogeneous zones surpasses the properties predicted by the rule of mixtures. Therefore, the mechanical or physical properties of HSMs are not achievable by their homogeneous counterparts. HSM production commonly requires plastic deformation to refine the microstructure and subsequent partial recrystallization heat-treatments to obtain heterogeneous distributions of grain size, texture, or defect density. Other routes are by applying surface plastic deformation or by stacking layers with a high property mismatch between them. All of those routes can be achieved by severe plastic deformation (SPD) techniques. This overview focuses on describing the fundamentals of HSMs produced by SPD. A critical description of the physics of SPD and HSMs, as well as the factors influencing their microstructural evolution, perspectives, and outstanding issues, are included. A critical comparison of the strength-ductility relationship in HSMs produced by different SPD techniques is also included to guide upcoming research. This overview is intended to serve as a basis for understanding and designing future HSMs produced by SPD.

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“…119,121) Other works have focused on the simulation of fracture or residual stress in RCS-processed multimodal materials. 120,[127][128][129]…”

Section: Repetitive Corrugation and Straightening (Rcs)mentioning

confidence: 99%

Heterostructured Materials by Severe Plastic Deformation: Overview and Perspectives

Romero-Resendiz,

Naeem,

Zhu

2023

Mater. Trans.

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“…They compared the results with the drilling method, and found that the residual stress on the surface of the lampshade tested by the two methods was very close. Tajdary et al [7] considered the inherent mean effect in residual stress X-ray diffraction (XRD) measurements, which is related to the finite size of the irradiation area, resulting in inaccurate measurements in the presence of high surface stress gradients. A deconvolution stress reconstruction method based on average XRD measurements was proposed, which allowed for the drawing of non-uniform residual stress maps based on XRD measurements.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Misalignment on Stress Concentration and Fatigue Life for Circumferential Weld Joints of Pipeline

Zhang,

Deng,

Lin

et al. 2024

Metals

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Misalignment has a significant impact on the fatigue performance of circumferential weld joints in pipelines, which can significantly reduce the fatigue life. Misalignment generates a structural stress concentration on the pipeline, which proportionally reduces its fatigue strength. Moreover, due to the misalignment, the reinforcement of the root and the transition angle of the pipeline inwall are significantly reduced, increasing its notch stress concentration factor and further reducing its fatigue performance. This work investigates the effect of misalignment on stress concentration in the circumferential welds of pipelines, and it is used to predict the fatigue life. The structural stress method is proposed in the present work, and finite element analysis technology with Abaqus is used to calculate the structural stress concentration factor kj at the root-pass toe of misaligned circumferential weld joints, and a formula for the relationship between the structural stress concentration factor kj and the misalignment is established. The total stress concentration factor k of weld joints with different misalignments under several welding processes are calculated, and are compared with the structural stress concentration factor kj. The fatigue test data of weld joints with different misalignments are studied, and it is shown that the fatigue performance could be predicted by the fitting result.

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Determination of gradient residual stress for elastoplastic materials by nanoindentation

Shen,

Dong,

et al. 2024

Journal of Manufacturing Processes

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A Deconvolution Method for the Mapping of Residual Stresses by X-Ray Diffraction

Cited by 3 publications

References 22 publications

Heterostructured Materials by Severe Plastic Deformation: Overview and Perspectives

Heterostructured Materials by Severe Plastic Deformation: Overview and Perspectives

The Effect of Misalignment on Stress Concentration and Fatigue Life for Circumferential Weld Joints of Pipeline

Determination of gradient residual stress for elastoplastic materials by nanoindentation

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