Fracture and Structural Integrity e-ISSN 1971-8993 Open access
Miscellanea Vol. 11, No. 41 (2017)

A model to quantify fatigue crack growth by cyclic damage accumulation calculated by strip-yield procedures

Author and affiliation details
  • Samuel Elias Ferreira Corresponding author ferreirase@hotmail.com
  • Jaime Tupiassú Pinho de Castro
  • Marco Antonio Meggiolaro
DOI
10.3221/IGF-ESIS.41.18
Pages
Pages 129-138
Published
Published inVol. 11, No. 41 (2017)Go to the issue

Abstract

Elber's hypothesis that DeltaKeff can be assumed as the driving force for fatigue crack growth (FCG) is the basis for strip-yield models widely used to predict fatigue lives under variable amplitude loads, although it does not explain all load sequence effects observed in practice. To verify if these models are indeed intrinsically better, the mechanics of a typical strip-yield model is used to predict FCG rates based both on Elber's ideas and on the alternative view that FCG is instead due to damage accumulation induced by the cyclic strain history ahead of the crack tip, which does not need or use DeltaKeff ideas. The main purpose here is to predict FCG using the cyclic strains induced by the plastic displacements calculated by strip-yield procedures, assuming there are strain limits associated both the with the FCG threshold and with the material toughness. Despite based on conflicting principles, both models can reproduce quite well FCG data, a somewhat surprising result that deserves to be carefully analyzed.

Keywords

Article history

  1. ReceivedUntil the next stage: 0 days
  2. AcceptedUntil the next stage: 1 day
  3. Published

How to cite

APA

Ferreira, S. E., de Castro, J. T. P., & Meggiolaro, M. A. (2017). A model to quantify fatigue crack growth by cyclic damage accumulation calculated by strip-yield procedures. Fracture and Structural Integrity, 11(41), Pages 129–138. https://doi.org/10.3221/IGF-ESIS.41.18

IEEE

S. E. Ferreira, J. T. P. de Castro, and M. A. Meggiolaro, “A model to quantify fatigue crack growth by cyclic damage accumulation calculated by strip-yield procedures,” Fracture and Structural Integrity, vol. 11, no. 41, pp. Pages 129–138, 2017, doi: 10.3221/IGF-ESIS.41.18.

MLA

Ferreira, Samuel Elias, et al. “A model to quantify fatigue crack growth by cyclic damage accumulation calculated by strip-yield procedures.” Fracture and Structural Integrity, vol. 11, no. 41, 2017, pp. Pages 129–138. https://doi.org/10.3221/IGF-ESIS.41.18.

Chicago

Ferreira, Samuel Elias, Jaime Tupiassú Pinho de Castro, and Marco Antonio Meggiolaro. 2017. “A model to quantify fatigue crack growth by cyclic damage accumulation calculated by strip-yield procedures.” Fracture and Structural Integrity 11 (41): Pages 129–138. https://doi.org/10.3221/IGF-ESIS.41.18.

Harvard

Ferreira, S.E., de Castro, J.T.P. and Meggiolaro, M.A. (2017) ‘A model to quantify fatigue crack growth by cyclic damage accumulation calculated by strip-yield procedures’, Fracture and Structural Integrity, 11(41), pp. Pages 129–138. doi: 10.3221/IGF-ESIS.41.18.

Vancouver

Ferreira SE, de Castro JTP, Meggiolaro MA. A model to quantify fatigue crack growth by cyclic damage accumulation calculated by strip-yield procedures. Fracture and Structural Integrity. 2017;11(41):Pages 129-138. doi:10.3221/IGF-ESIS.41.18

BibTeX

@article{ferreira2017, author = {Ferreira, Samuel Elias and de Castro, Jaime Tupiassú Pinho and Meggiolaro, Marco Antonio}, title = {A model to quantify fatigue crack growth by cyclic damage accumulation calculated by strip-yield procedures}, journal = {Fracture and Structural Integrity}, year = {2017}, volume = {11}, number = {41}, pages = {Pages 129--138}, doi = {10.3221/IGF-ESIS.41.18}, url = {https://doi.org/10.3221/IGF-ESIS.41.18}, issn = {1971-8993} }

RIS

TY - JOUR AU - Ferreira, Samuel Elias AU - de Castro, Jaime Tupiassú Pinho AU - Meggiolaro, Marco Antonio TI - A model to quantify fatigue crack growth by cyclic damage accumulation calculated by strip-yield procedures JO - Fracture and Structural Integrity T2 - Fracture and Structural Integrity PY - 2017 DA - 2017/06/28 VL - 11 IS - 41 SP - Pages 129 EP - 138 DO - 10.3221/IGF-ESIS.41.18 UR - https://doi.org/10.3221/IGF-ESIS.41.18 SN - 1971-8993 ER -

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