This paper proposes an analysis of variable amplitude fatigue data obtained for the P355NL1 steel, using a strain-based cumulative damage model. The fatigue data consist of constant and variable amplitude block loading, which was applied to both smooth and notched specimens, previously published by the authors. The strain-based cumulative damage model, which has been proposed by D.L. DuQuesnay, is based on the growth and closure mechanisms of microcracks. It incorporates a parameter termed net effective strain range, which is a function of the microcrack closure behavior and inherent ability to resist fatigue damage. A simplified version of the model is considered, which assumes crack closure at the lowest level for the entire spectrum and does not account for varying crack opening stresses. In general, the model produces conservative predictions within an accuracy range of two on lives, for both smooth and notched geometries, demonstrating the robustness of the model.
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e-mail: hfpereira@portugalmail.pt
e-mail: duquesnay-d@rmc.ca
e-mail: ajesus@utad.pt
e-mail: a.luis.l.silva@gmail.com
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October 2009
Research Papers
Analysis of Variable Amplitude Fatigue Data of the P355NL1 Steel Using the Effective Strain Damage Model
Hélder F. S. G. Pereira,
Hélder F. S. G. Pereira
UCVE,
e-mail: hfpereira@portugalmail.pt
IDMEC–Pólo FEUP
, Campus da FEUP, Rua Dr. Roberto Frias, 404, 4200-465 Porto, Portugal
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David L. DuQuesnay,
David L. DuQuesnay
Department of Mechanical Engineering,
e-mail: duquesnay-d@rmc.ca
Royal Military College of Canada
, P.O. Box 17000 Station Forces, Kingston, ON, Canada
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Abílio M. P. De Jesus,
Abílio M. P. De Jesus
Engineering Department, Mechanical Engineering,
e-mail: ajesus@utad.pt
University of Trás-os-Montes and Alto Douro
, Quinta de Prados, 5001-801 Vila Real, Portugal
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António L. L. Silva
António L. L. Silva
Engineering Department, Mechanical Engineering,
e-mail: a.luis.l.silva@gmail.com
University of Trás-os-Montes and Alto Douro
, Quinta de Prados, 5001-801 Vila Real, Portugal
Search for other works by this author on:
Hélder F. S. G. Pereira
UCVE,
IDMEC–Pólo FEUP
, Campus da FEUP, Rua Dr. Roberto Frias, 404, 4200-465 Porto, Portugale-mail: hfpereira@portugalmail.pt
David L. DuQuesnay
Department of Mechanical Engineering,
Royal Military College of Canada
, P.O. Box 17000 Station Forces, Kingston, ON, Canadae-mail: duquesnay-d@rmc.ca
Abílio M. P. De Jesus
Engineering Department, Mechanical Engineering,
University of Trás-os-Montes and Alto Douro
, Quinta de Prados, 5001-801 Vila Real, Portugale-mail: ajesus@utad.pt
António L. L. Silva
Engineering Department, Mechanical Engineering,
University of Trás-os-Montes and Alto Douro
, Quinta de Prados, 5001-801 Vila Real, Portugale-mail: a.luis.l.silva@gmail.com
J. Pressure Vessel Technol. Oct 2009, 131(5): 051402 (10 pages)
Published Online: July 27, 2009
Article history
Received:
July 30, 2008
Revised:
April 9, 2009
Published:
July 27, 2009
Citation
Pereira, H. F. S. G., DuQuesnay, D. L., De Jesus, A. M. P., and Silva, A. L. L. (July 27, 2009). "Analysis of Variable Amplitude Fatigue Data of the P355NL1 Steel Using the Effective Strain Damage Model." ASME. J. Pressure Vessel Technol. October 2009; 131(5): 051402. https://doi.org/10.1115/1.3147986
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