A Novel Closed-Form Calculation of the Stress Intensity Factor for a Crack in a Residual Stress Field

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Exact closed-form stress intensity factor (SIF) solutions have been developed for a mode- I through-thickness cracks in an infinite plate. Centre-crack problems have been analysed comprehensively in the literature, but the focus has been on the effect of simple loading about the crack centre. In the current work, the formula of Sih-Paris-Erdogan has been extended to consider the SIF difference on the left and right crack tips, under the local influence of general asymmetric and symmetric stress field. Exact SIF magnification factors convenient for computations have been derived that simultaneously circumvent the problem of crack-tip stress singularity. The solutions so obtained are applied to generate the residual SIFs that would act on a crack growing under the influence of the residual stress fields associated with welded plates and cold-worked holes using the measured residual stress profiles.

Info:

Periodical:

Materials Science Forum (Volumes 524-525)

Edited by:

W. Reimers and S. Quander

Pages:

83-88

DOI:

10.4028/www.scientific.net/MSF.524-525.83

Citation:

J. Meng Lee Tan et al., "A Novel Closed-Form Calculation of the Stress Intensity Factor for a Crack in a Residual Stress Field ", Materials Science Forum, Vols. 524-525, pp. 83-88, 2006

Online since:

September 2006

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$35.00

[1] J. M. -L. Tan, M.E. Fitzpatrick & L. Edwards, Stress Intensity Factors for Through-Thickness Cracks in a Wide Plate: Derivation and Application to Arbritary Weld Residual Stress Fields. Submitted to Eng. Fract. Mech.

DOI: 10.1016/j.engfracmech.2006.10.017

[2] G. Sih, P. Paris & F. Erdogan: J. Appl. Mech., Trans. ASME. Vol. 29 (1962), pp.306-312.

[3] A. Grandt & T. Kullgren A compilation of stress intensity factor solutions for flawed fastener holes. Materials Laboratory, Air Force Wright Aeronautical Laboratories (1981).

DOI: 10.1016/0013-7944(83)90152-2

[4] S. Pitt, R. Jones, Atluri S.N. Comput Struct., Vol. 70 (1999), pp.583-597.

[5] Y. Zhang, S. Ganguly S., L. Edwards & M.E. Fitzpatrick, Acta Mater. Vol. 52 (2004), p.5225.

[6] A.T. Özdemir & L. Edwards, L.: J. Engng. Mat. & Tech., Trans. ASME, Vol. 126 (2004) p.129.

[7] E.T. Eastbrook, B.D. Flinn, C. Meyer & N. Juhlin, The StressWaveTM Fatigue life Enhancement Process. SAE International, Paper 2001-01-2578 (2001).

[8] J. M. -L. Tan, M.E. Fitzpatrick & L. Edwards, Fatigue crack growth prediction at StressWave cold-worked holes, Proc. Int. Comm. Aero. Fatigue, ICAF 2005, Paper IC-086 (2005).

[9] J.A. Harter, AFGROW Users Guide and Technical Manual. AFRL-VA-WP-TR-2004 (2004).

DOI: 10.21236/ada370431

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