Measuring and predicting the effects of residual stresses on crack propagation

Anton Shterenlikht; Danut Stefanescu; Matthew Fox; Kerry Taylor; João Quinta da Fonseca; Andrew Sherry; Philip Withers

doi:10.4028/www.scientific.net/MSF.524-525.77

Measuring and predicting the effects of residual stresses on crack propagation

Anton Shterenlikht, Danut Stefanescu, Matthew Fox, Kerry Taylor, João Quinta da Fonseca, Andrew Sherry, Philip Withers

Research output: Chapter in Book/Conference proceeding › Conference contribution › peer-review

Abstract

This article presents the first part of a study on the interaction between residual stresses and crack driving force. Blunt notched CT specimens were pre-strained to introduce residual stresses at the notch, where a crack is subsequently introduced. FE modelling is used to model the specimen preload and pre-cracking. Modelling predictions are validated by two different methods. The total predicted surface residual strains are compared to image correlation measurements. The predicted residual strains were measured using neutron diffraction, both before and after fatigue cracking. The residual strain profiles show good agreement with the 3D FE model in the far field but the peak strains measured near the notch are smaller those predicted. This is a result of the low spatial resolution of the technique.

Original language	English
Title of host publication	Materials Science Forum\|Mater Sci Forum
Pages	77-82
Number of pages	5
Volume	524-525
DOIs	https://doi.org/10.4028/www.scientific.net/MSF.524-525.77
Publication status	Published - 2006
Event	7th European Conference on Residual Stresses, ECRS 7 - Berlin Duration: 1 Jul 2006 → … http://<Go to ISI>://000241187200021

Publication series

Name	Materials Science Forum
Publisher	Trans Tech Publications Ltd.
ISSN (Print)	0255-5476

Other

Other	7th European Conference on Residual Stresses, ECRS 7
City	Berlin
Period	1/07/06 → …
Internet address	http://<Go to ISI>://000241187200021

Keywords

Crack driving force
Finite element
Image correlation
J-integral
Neutron diffraction
Pre-loading, blunt notched CT

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10.4028/www.scientific.net/MSF.524-525.77

Cite this

@inproceedings{22b73d0b07744457bb2f5e4341088293,

title = "Measuring and predicting the effects of residual stresses on crack propagation",

abstract = "This article presents the first part of a study on the interaction between residual stresses and crack driving force. Blunt notched CT specimens were pre-strained to introduce residual stresses at the notch, where a crack is subsequently introduced. FE modelling is used to model the specimen preload and pre-cracking. Modelling predictions are validated by two different methods. The total predicted surface residual strains are compared to image correlation measurements. The predicted residual strains were measured using neutron diffraction, both before and after fatigue cracking. The residual strain profiles show good agreement with the 3D FE model in the far field but the peak strains measured near the notch are smaller those predicted. This is a result of the low spatial resolution of the technique.",

keywords = "Crack driving force, Finite element, Image correlation, J-integral, Neutron diffraction, Pre-loading, blunt notched CT",

author = "Anton Shterenlikht and Danut Stefanescu and Matthew Fox and Kerry Taylor and {Quinta da Fonseca}, Jo{\~a}o and Andrew Sherry and Philip Withers",

note = "7th European Conference on Residual Stresses (ERCS 7), Berlin, GERMANY, SEP 13-15, 2006; 7th European Conference on Residual Stresses, ECRS 7 ; Conference date: 01-07-2006",

year = "2006",

doi = "10.4028/www.scientific.net/MSF.524-525.77",

language = "English",

isbn = "9780878494149",

volume = "524-525",

series = "Materials Science Forum",

publisher = "Trans Tech Publications Ltd.",

pages = "77--82",

booktitle = "Materials Science Forum|Mater Sci Forum",

url = "http://<Go to ISI>://000241187200021",

}

Shterenlikht, A, Stefanescu, D, Fox, M, Taylor, K, Quinta da Fonseca, J , Sherry, A & Withers, P 2006, Measuring and predicting the effects of residual stresses on crack propagation. in Materials Science Forum|Mater Sci Forum. vol. 524-525, Materials Science Forum, pp. 77-82, 7th European Conference on Residual Stresses, ECRS 7, Berlin, 1/07/06. https://doi.org/10.4028/www.scientific.net/MSF.524-525.77

TY - GEN

T1 - Measuring and predicting the effects of residual stresses on crack propagation

AU - Shterenlikht, Anton

AU - Stefanescu, Danut

AU - Fox, Matthew

AU - Taylor, Kerry

AU - Quinta da Fonseca, João

AU - Sherry, Andrew

AU - Withers, Philip

N1 - 7th European Conference on Residual Stresses (ERCS 7), Berlin, GERMANY, SEP 13-15, 2006

PY - 2006

Y1 - 2006

N2 - This article presents the first part of a study on the interaction between residual stresses and crack driving force. Blunt notched CT specimens were pre-strained to introduce residual stresses at the notch, where a crack is subsequently introduced. FE modelling is used to model the specimen preload and pre-cracking. Modelling predictions are validated by two different methods. The total predicted surface residual strains are compared to image correlation measurements. The predicted residual strains were measured using neutron diffraction, both before and after fatigue cracking. The residual strain profiles show good agreement with the 3D FE model in the far field but the peak strains measured near the notch are smaller those predicted. This is a result of the low spatial resolution of the technique.

AB - This article presents the first part of a study on the interaction between residual stresses and crack driving force. Blunt notched CT specimens were pre-strained to introduce residual stresses at the notch, where a crack is subsequently introduced. FE modelling is used to model the specimen preload and pre-cracking. Modelling predictions are validated by two different methods. The total predicted surface residual strains are compared to image correlation measurements. The predicted residual strains were measured using neutron diffraction, both before and after fatigue cracking. The residual strain profiles show good agreement with the 3D FE model in the far field but the peak strains measured near the notch are smaller those predicted. This is a result of the low spatial resolution of the technique.

KW - Crack driving force

KW - Finite element

KW - Image correlation

KW - J-integral

KW - Neutron diffraction

KW - Pre-loading, blunt notched CT

U2 - 10.4028/www.scientific.net/MSF.524-525.77

DO - 10.4028/www.scientific.net/MSF.524-525.77

M3 - Conference contribution

SN - 9780878494149

VL - 524-525

T3 - Materials Science Forum

SP - 77

EP - 82

BT - Materials Science Forum|Mater Sci Forum

T2 - 7th European Conference on Residual Stresses, ECRS 7

Y2 - 1 July 2006

ER -

Measuring and predicting the effects of residual stresses on crack propagation

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