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

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

Mechanical And Aerospace Engineering

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution book

215 Downloads (Pure)

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.

Original language	English
Title of host publication	FATIGUE 2017
Subtitle of host publication	Proceedings of the 7th Engineering Integrity Society International Conference on Durability & Fatigue
Editors	P. Bailey, F. Berto, E.R. Cawte, P. Roberts, M.T. Whittaker, J.R. Yates
Place of Publication	Rutland
Pages	366-377
Number of pages	11
ISBN (Electronic)	9780954436834
Publication status	Published - 30 Jun 2017
Event	EIS Fatigue 2017: 7th Engineering Integrity Society International Conference on Durability & Fatigue - Downing College, Cambridge, United Kingdom Duration: 3 Jul 2017 → 5 Jul 2017 http://www.fatigue2017.com/

Conference

Conference	EIS Fatigue 2017
Abbreviated title	EIS Fatigue 2017
Country/Territory	United Kingdom
City	Cambridge
Period	3/07/17 → 5/07/17
Internet address	http://www.fatigue2017.com/

Keywords

fatigue
weld
mean stress correction
SN curve

Access to Document

Gorash-etal-FATIGUE-2017-weld-distortion-throughout-the-identification-of-fatigue-curve-parameters-using-mean-stress-correctionAccepted author manuscript, 5.51 MB

1 Finished

POTF: WeirSPM Pump of the Future PowerFrame
Gorash, Y. (Researcher), Comlekci, T. (Principal Investigator) & MacKenzie, D. (Academic)
1/04/14 → 31/08/14
Project: Knowledge Exchange

2 Conference Contribution
1 Article

Investigation of fatigue assessments accuracy for beam weldments considering material data input and FE-mode type
Gorash, Y., Comlekci, T. & MacKenzie, D., 2 Jun 2017, In: Journal of Physics: Conference Series. 843, 14 p., 012025.
Research output: Contribution to journal › Conference Contribution › peer-review

Open Access
File
4 Citations (Scopus)

168 Downloads (Pure)
Influence of material data input on accuracy of fatigue assessments for beam weldments
Gorash, Y., Comlekci, T. & MacKenzie, D., 25 Oct 2016, (Unpublished) In: Proceedings in Applied Mathematics and Mechanics, PAMM. 16, 1, p. 127-128 2 p., 90857.
Research output: Contribution to journal › Article › peer-review

File
Comparative study of FE-models and material data for fatigue life assessments of welded thin-walled cross-beam connections
Gorash, Y., Comlekci, T. & Mackenzie, D., 29 Dec 2015, In: Procedia Engineering. 133, p. 420-432 13 p.
Research output: Contribution to journal › Conference Contribution › peer-review

Open Access
File
14 Citations (Scopus)

1273 Downloads (Pure)

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).

Gorash, Yevgen ; Zhou, Xingguo ; Comlekci, Tugrul et al. / 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 et al.
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 proceeding › Conference contribution book

TY - GEN

T1 - Consideration of weld distortion throughout the identification of fatigue curve parameters using mean stress correction

AU - Gorash, Yevgen

AU - Zhou, Xingguo

AU - Comlekci, Tugrul

AU - Mackenzie, Donald

AU - Bayyouk, Jacob

PY - 2017/6/30

Y1 - 2017/6/30

N2 - 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.

AB - 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.

KW - fatigue

KW - weld

KW - mean stress correction

KW - SN curve

M3 - Conference contribution book

SP - 366

EP - 377

BT - FATIGUE 2017

A2 - Bailey, P.

A2 - Berto, F.

A2 - Cawte, E.R.

A2 - Roberts, P.

A2 - Whittaker, M.T.

A2 - Yates, J.R.

CY - Rutland

T2 - EIS Fatigue 2017

Y2 - 3 July 2017 through 5 July 2017

ER -

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

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

Abstract

Conference

Keywords

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Projects

POTF: WeirSPM Pump of the Future PowerFrame

Research output

Investigation of fatigue assessments accuracy for beam weldments considering material data input and FE-mode type

Influence of material data input on accuracy of fatigue assessments for beam weldments

Comparative study of FE-models and material data for fatigue life assessments of welded thin-walled cross-beam connections

Cite this