Fatigue crack propagation prediction of a pressure vessel mild steel based on a strain energy density model

P. J. Huffman; J. Ferreira; J.A.F.O. Correia; A.M.P. De Jesus; G. Lesiuk; F. Berto; A. Fernandez-Canteli; G. Glinka

doi:10.3221/IGF-ESIS.42.09

Fatigue crack propagation prediction of a pressure vessel mild steel based on a strain energy density model

Authors

P. J. Huffman John Deere, One John Deere Place, Moline, IL 61265, USA
J. Ferreira INEGI, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal
J.A.F.O. Correia INEGI, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal http://orcid.org/0000-0002-4148-9426
A.M.P. De Jesus INEGI, Faculty of Engineering, University of Porto, Rua Dr. Roberto Frias, 4200-465 Porto, Portugal http://orcid.org/0000-0002-1059-715X
G. Lesiuk Faculty of Mechanical Engineering, Department of Mechanics, Material Science and Engineering, Wrocław University of Science and Technology, Smoluchowskiego 25, 50-370 Wrocław, Poland https://orcid.org/0000-0003-3553-6107
F. Berto Department of Industrial and Mechanical Design, Norwegian University of Science and Technology, Norway http://orcid.org/0000-0002-4207-0109
A. Fernandez-Canteli Department of Construction and Manufacturing Engineering, Univ. of Oviedo, 33203 Gijón, Spain http://orcid.org/0000-0001-8071-9223
G. Glinka Department of Mechanical Engineering, University of Waterloo, 200 Univ. Avenue West, Waterloo, ON, 2L 3G1, Canada http://orcid.org/0000-0001-8452-8803

DOI:

https://doi.org/10.3221/IGF-ESIS.42.09

Keywords:

Fatigue Crack Growth, Strain Energy, Unigrow Model, Pressure Vessel Steel

Abstract

Fatigue crack growth (FCG) rates have traditionally been formulated from fracture mechanics, whereas fatigue crack initiation has been empirically described using stress-life or strain-life methods. More recently, there has been efforts towards the use of the local stress-strain and similitude concepts to formulate fatigue crack growth rates. A new model has been developed which derives stress-life, strain-life and fatigue crack growth rates from strain energy density concepts. This new model has the advantage to predict an intrinsic stress ratio effect of the form ?ar=(?amp)?·(?max )(1-?), which is dependent on the cyclic stress-strain behaviour of the material. This new fatigue crack propagation model was proposed by Huffman based on Walkerlike strain-life relation. This model is applied to FCG data available for the P355NL1 pressure vessel steel. A comparison of the experimental results and the Huffman crack propagation model is made.

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Published

29-09-2017

Issue

Vol. 11 No. 42 (2017): October 2017

Section

Miscellanea

License

This work is licensed under a Creative Commons Attribution 4.0 International License.

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How to Cite

Fatigue crack propagation prediction of a pressure vessel mild steel based on a strain energy density model. (2017). Frattura Ed Integrità Strutturale, 11(42), Pages 74-84. https://doi.org/10.3221/IGF-ESIS.42.09