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Effect of Plastic Deformation on Compliance Curve Based Crack Closure Measurement

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Abstract:

Fatigue crack growth depends heavily on near tip stress-strain behavior controlled by many micromechanical and microstructural factors. Crack closure is widely used to rationalize crack growth behaviour under complex loading conditions. Reliable crack closure measurement is essential for enhanced damage tolerance design and remains a challenge to the industry. This paper focuses on the effect of plastic deformation ahead of a notch/crack on the non-linearity of compliance curves of 6082-T651 aluminium alloy specimens to highlight a potential issue in the conventional compliance curve based crack closure measurement technique. Experimental and numerical simulation results demonstrate that plastic deformation ahead of the notch will introduce non-linear stress-strain behavior in the absence of crack closure. It is proposed that the effect of crack tip plasticity on the non-linearity of the compliance curve be separated to obtain reliable crack closure measurement.

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Periodical:

Key Engineering Materials (Volume 713)

Pages:

240-243

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.713.240

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Online since:

September 2016

Authors:

M.A. Mohin, Y.G. Xu*, A. Lewis, A. Chrysanthou

Keywords:

Compliance Curve, Crack Closure, Damage Tolerance Design

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© 2016 Trans Tech Publications Ltd. All Rights Reserved

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References

[1] Xu, Y., et al. (2005), Improved fatigue and damage tolerant material design for aerospace industry, Journal of Materials Science and Technology, vol. 21, pp.856-62.

Google Scholar

[2] Toribio, J. and V. Kharin (2011), Plasticity-induced crack closure: A contribution to the debate, European Journal of Mechanics - A/Solids, vol. 30, pp.105-12.

DOI: 10.1016/j.euromechsol.2010.11.002

Google Scholar

[3] McEvily, A. and S. Ishihara (2002), On the development of crack closure at high R levels after an overload, Fatigue & Fracture of Engng Mater & Struct, vol. 25, pp.993-8.

DOI: 10.1046/j.1460-2695.2002.00545.x

Google Scholar

[4] Newman Jr, J.C., E.L. Anagnostou, and D. Rusk (2014), Fatigue and crack-growth analyses on 7075-T651 aluminum alloy coupons under constant- and variable-amplitude loading, International Journal of Fatigue, vol. 62, pp.133-43.

DOI: 10.1016/j.ijfatigue.2013.04.020

Google Scholar

[5] Antunes, F.V., et al. (2015), A numerical study of plasticity induced crack closure under plane strain conditions, International Journal of Fatigue, vol. 71, pp.75-86.

DOI: 10.1016/j.ijfatigue.2014.03.016

Google Scholar

[6] Phillips, E. (1989), Results of the round robin on opening-load measurement, NASA Technical Memorandum, 101601.

Google Scholar

[7] Phillips, E. (1993), Results of the second round robin on opening-load measurement, NASA Technical Memorandum, 109032.

Google Scholar

[8] Xu, Y., et al. (2012), Load sequence effect on fatigue damage, Key Engineering Materials, vol. 488, pp.545-8.

Google Scholar

[9] Solanki, K., S. Daniewicz, and J. Newman Jr (2004), Finite element analysis of plasticity-induced fatigue crack closure: an overview, Eng Fracture Mechanics, vol. 71, pp.149-71.

DOI: 10.1016/s0013-7944(03)00099-7

Google Scholar

[10] Xu, Y., P. Gregson, and I. Sinclair (2000), Systematic assessment and validation of compliance-based crack closure measurements in fatigue, Materials Science and Engineering: A, vol. 284, pp.114-25.

DOI: 10.1016/s0921-5093(00)00758-9

Google Scholar