Consideration of weld distortion throughout the identification of fatigue curve parameters using mean stress correction

Yevgen Gorash, Xingguo Zhou, Tugrul Comlekci, Donald Mackenzie, Jacob Bayyouk

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

Abstract

The effect of weld angular distortion on fatigue test specimens cut from butt welded plates is investigated by experimental and numerical methods. The weld specimens are made of a structural steel equivalent to BS 4360 grade 50D. The SN curve obtained from experimental data is used with the fatigue post-processor nCode DesignLife for fatigue life prediction. Mean stress correction is applied using the FKM approach to address the component of bending stress induced by clamping the distorted specimen, which is constant during the fatigue test. A parameter identification procedure for the SN curve and mean stress correction is proposed. The weld SN curve evaluated using the procedure is compared to the generic weld SN curves provided in the material database of nCode DesignLife and discussed.
LanguageEnglish
Title of host publicationFATIGUE 2017
Subtitle of host publicationProceedings of the 7th Engineering Integrity Society International Conference on Durability & Fatigue
EditorsP. Bailey, F. Berto, E.R. Cawte, P. Roberts, M.T. Whittaker, J.R. Yates
Place of PublicationRutland
Pages366-377
Number of pages11
ISBN (Electronic)9780954436834
Publication statusPublished - 30 Jun 2017
EventEIS Fatigue 2017: 7th Engineering Integrity Society International Conference on Durability & Fatigue - Downing College, Cambridge, United Kingdom
Duration: 3 Jul 20175 Jul 2017
http://www.fatigue2017.com/

Conference

ConferenceEIS Fatigue 2017
Abbreviated titleEIS Fatigue 2017
CountryUnited Kingdom
CityCambridge
Period3/07/175/07/17
Internet address

Fingerprint

Welds
Fatigue of materials
Numerical methods
Identification (control systems)
Steel

Keywords

  • fatigue
  • weld
  • mean stress correction
  • SN curve

Cite this

Gorash, Y., Zhou, X., Comlekci, T., Mackenzie, D., & Bayyouk, J. (2017). Consideration of weld distortion throughout the identification of fatigue curve parameters using mean stress correction. In P. Bailey, F. Berto, E. R. Cawte, P. Roberts, M. T. Whittaker, & J. R. Yates (Eds.), FATIGUE 2017: Proceedings of the 7th Engineering Integrity Society International Conference on Durability & Fatigue (pp. 366-377). Rutland.
Gorash, Yevgen ; Zhou, Xingguo ; Comlekci, Tugrul ; Mackenzie, Donald ; Bayyouk, Jacob. / Consideration of weld distortion throughout the identification of fatigue curve parameters using mean stress correction. FATIGUE 2017: Proceedings of the 7th Engineering Integrity Society International Conference on Durability & Fatigue. editor / P. Bailey ; F. Berto ; E.R. Cawte ; P. Roberts ; M.T. Whittaker ; J.R. Yates. Rutland, 2017. pp. 366-377
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abstract = "The effect of weld angular distortion on fatigue test specimens cut from butt welded plates is investigated by experimental and numerical methods. The weld specimens are made of a structural steel equivalent to BS 4360 grade 50D. The SN curve obtained from experimental data is used with the fatigue post-processor nCode DesignLife for fatigue life prediction. Mean stress correction is applied using the FKM approach to address the component of bending stress induced by clamping the distorted specimen, which is constant during the fatigue test. A parameter identification procedure for the SN curve and mean stress correction is proposed. The weld SN curve evaluated using the procedure is compared to the generic weld SN curves provided in the material database of nCode DesignLife and discussed.",
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Gorash, Y, Zhou, X, Comlekci, T, Mackenzie, D & Bayyouk, J 2017, Consideration of weld distortion throughout the identification of fatigue curve parameters using mean stress correction. in P Bailey, F Berto, ER Cawte, P Roberts, MT Whittaker & JR Yates (eds), FATIGUE 2017: Proceedings of the 7th Engineering Integrity Society International Conference on Durability & Fatigue. Rutland, pp. 366-377, EIS Fatigue 2017, Cambridge, United Kingdom, 3/07/17.

Consideration of weld distortion throughout the identification of fatigue curve parameters using mean stress correction. / Gorash, Yevgen; Zhou, Xingguo; Comlekci, Tugrul; Mackenzie, Donald; Bayyouk, Jacob.

FATIGUE 2017: Proceedings of the 7th Engineering Integrity Society International Conference on Durability & Fatigue. ed. / P. Bailey; F. Berto; E.R. Cawte; P. Roberts; M.T. Whittaker; J.R. Yates. Rutland, 2017. p. 366-377.

Research output: Chapter in Book/Report/Conference proceedingConference contribution book

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Gorash Y, Zhou X, Comlekci T, Mackenzie D, Bayyouk J. Consideration of weld distortion throughout the identification of fatigue curve parameters using mean stress correction. In Bailey P, Berto F, Cawte ER, Roberts P, Whittaker MT, Yates JR, editors, FATIGUE 2017: Proceedings of the 7th Engineering Integrity Society International Conference on Durability & Fatigue. Rutland. 2017. p. 366-377