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Validation of notch stress estimation schemes for different constraints, strain gradients and loading conditions on low C-Mn steel
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  • Shreebanta Kumar Jena,
  • Punit Arora,
  • Suneel Gupta,
  • J. Chattopadhyay
Shreebanta Kumar Jena
Homi Bhabha National Institute

Corresponding Author:[email protected]

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Punit Arora
Homi Bhabha National Institute
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Suneel Gupta
Homi Bhabha National Institute
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J. Chattopadhyay
Homi Bhabha National Institute
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The present study is aimed at validation of notch stress/ strain estimation schemes such as classical Neuber, Hoffmann-Seeger and recently developed Ince-Glinka method for Nuclear piping material (low C-Mn steel). The study has considered different constraints, loading conditions, various hole sizes to accommodate strain gradient variations and equivalent peak strains. The notch stress field evaluated using these schemes is compared with corresponding stress using elastic-plastic Finite Element (FE) analyses. The comparisons have brought out that the Hoffmann-Seeger scheme results in reasonably accurate assessment of stress localization nearly for all constraint geometries, loadings and strain gradients. However, the classical Neuber scheme is more suitable for low constraint geometries and intermediate constraint geometries whereas it results in under-estimation of maximum principal stress for high constraint geometries, thereby leading to over-prediction of fatigue life. Further, the suitability of energy equivalence equations of Ince-Glinka model for individual stress components, has been reviewed.
22 Sep 2021Submitted to Fatigue & Fracture of Engineering Materials & Structures
22 Sep 2021Submission Checks Completed
22 Sep 2021Assigned to Editor
23 Sep 2021Reviewer(s) Assigned
17 Oct 2021Review(s) Completed, Editorial Evaluation Pending
19 Oct 2021Editorial Decision: Revise Major
07 Dec 20211st Revision Received
07 Dec 2021Assigned to Editor
07 Dec 2021Submission Checks Completed
07 Dec 2021Reviewer(s) Assigned
15 Dec 2021Review(s) Completed, Editorial Evaluation Pending
24 Dec 2021Editorial Decision: Revise Major
31 Dec 20212nd Revision Received
01 Jan 2022Submission Checks Completed
01 Jan 2022Assigned to Editor
01 Jan 2022Reviewer(s) Assigned
01 Jan 2022Review(s) Completed, Editorial Evaluation Pending
03 Jan 2022Editorial Decision: Accept