Fracture and Structural Integrity e-ISSN 1971-8993 Open access
SI: Showcasing Structural Integrity Research in India Vol. 13, No. 50 (2019)

Crack growth based life prediction approach under LCF-HCF interaction

Author and affiliation details
  • Aritra Sarkar Corresponding author IGCAR aritra@igcar.gov.in
  • M. Okazaki Nagaoka University of Technology ROR00ys1hz88
  • A. Nagesha IGCAR
  • R. Sandhya IGCAR
DOI
10.3221/IGF-ESIS.50.09
Pages
86-97
Published
Published inVol. 13, No. 50 (2019)Go to the issue

Abstract

Prediction of cyclic life under low cycle fatigue - high cycle fatigue (LCF-HCF) interaction is of paramount importance in the context of structural integrity of components in the primary side of fast reactors where such damage under LCF-HCF interaction occurs. The present investigation deals with the crack growth behavior of a type 316LN austenitic stainless steel subjected to simultaneous application of LCF and HCF cycles (block-loading). Tests were performed over a wide range of temperatures from ambient to 923 K. Experimental results indicate that a critical crack-length (acr) exists, beyond which the LCF-HCF interaction becomes significant. An attempt was made to predict life under block cycling by estimating the acr using fatigue crack threshold (ΔKth) since the latter is known to be affected significantly by the loading history. A universal equation, based on the concept of an equivalent critical crack length (acr.,eq) which incorporates the damage contribution from DSA and ratcheting under combined LCF-HCF loading, was proposed for life estimation.

Keywords

Article history

  1. ReceivedUntil the next stage: 70 days
  2. Revision requestedUntil the next stage: 129 days
  3. RevisedUntil the next stage: 11 days
  4. AcceptedUntil the next stage: 18 days
  5. Published

About the authors

M. Okazaki

Professor

How to cite

APA

Sarkar, A., Okazaki, M., Nagesha, A., & Sandhya, R. (2019). Crack growth based life prediction approach under LCF-HCF interaction. Fracture and Structural Integrity, 13(50), 86–97. https://doi.org/10.3221/IGF-ESIS.50.09

IEEE

A. Sarkar, M. Okazaki, A. Nagesha, and R. Sandhya, “Crack growth based life prediction approach under LCF-HCF interaction,” Fracture and Structural Integrity, vol. 13, no. 50, pp. 86–97, 2019, doi: 10.3221/IGF-ESIS.50.09.

MLA

Sarkar, Aritra, et al. “Crack growth based life prediction approach under LCF-HCF interaction.” Fracture and Structural Integrity, vol. 13, no. 50, 2019, pp. 86–97. https://doi.org/10.3221/IGF-ESIS.50.09.

Chicago

Sarkar, Aritra, M. Okazaki, A. Nagesha, and R. Sandhya. 2019. “Crack growth based life prediction approach under LCF-HCF interaction.” Fracture and Structural Integrity 13 (50): 86–97. https://doi.org/10.3221/IGF-ESIS.50.09.

Harvard

Sarkar, A., Okazaki, M., Nagesha, A. and Sandhya, R. (2019) ‘Crack growth based life prediction approach under LCF-HCF interaction’, Fracture and Structural Integrity, 13(50), pp. 86–97. doi: 10.3221/IGF-ESIS.50.09.

Vancouver

Sarkar A, Okazaki M, Nagesha A, Sandhya R. Crack growth based life prediction approach under LCF-HCF interaction. Fracture and Structural Integrity. 2019;13(50):86-97. doi:10.3221/IGF-ESIS.50.09

BibTeX

@article{sarkar2019, author = {Sarkar, Aritra and Okazaki, M. and Nagesha, A. and Sandhya, R.}, title = {Crack growth based life prediction approach under LCF-HCF interaction}, journal = {Fracture and Structural Integrity}, year = {2019}, volume = {13}, number = {50}, pages = {86--97}, doi = {10.3221/IGF-ESIS.50.09}, url = {https://doi.org/10.3221/IGF-ESIS.50.09}, issn = {1971-8993} }

RIS

TY - JOUR AU - Sarkar, Aritra AU - Okazaki, M. AU - Nagesha, A. AU - Sandhya, R. TI - Crack growth based life prediction approach under LCF-HCF interaction JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2019 DA - 2019/07/12 VL - 13 IS - 50 SP - 86 EP - 97 DO - 10.3221/IGF-ESIS.50.09 UR - https://doi.org/10.3221/IGF-ESIS.50.09 SN - 1971-8993 ER -

Licence

Copyright © 2019 Aritra Sarkar, M. Okazaki, A. Nagesha, R. Sandhya.

Copyright 
Authors are allowed to retain both the copyright and the publishing rights of their articles without restrictions.  

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