Understanding Crack Tip Plasticity – a Multi-Experimental Approach

Rachel A  Tomlinson; Ying Du; Eann A Patterson

doi:10.4028/www.scientific.net/AMM.70.153

Paper Titles

Validation of Welding Simulations Using Thermal Strains Measured with DIC
p.129

Local Elasto-Plastic Identification of the Behaviour of Friction Stir Welds with the Virtual Fields Method
p.135

Fatigue Crack Initiation and Propagation in SuperCMV Hollow Shafts with Transverse Holes
p.141

Accurate Measurement of Opening Displacement of Notch with Moiré Interferometry by Changing Applied Load
p.147

Understanding Crack Tip Plasticity – a Multi-Experimental Approach
p.153

Experimental and Theoretical Study of Fracture Paths in Brittle Cracked Materials Subjected to Pure Mode II Loading
p.159

Assessment of Measuring Errors in Strain Fields Obtained via DIC on Planar Sheet Metal Specimens with a Non-Perpendicular Camera Alignment
p.165

Digital Image Correlation Techniques for Analysing the Deformation Behaviour of Compacted Graphite Cast Irons on a Microstructural Level
p.171

Error Estimation of DIC for Heterogeneous Strain States
p.177

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vol. 70Understanding Crack Tip Plasticity – a...

Understanding Crack Tip Plasticity – a Multi-Experimental Approach

Abstract:

Crack tip plasticity has been investigated using thermoelastic stress analysis (TSA) and digital image correlation (DIC). The plastic zone size at the tip of a propagating fatigue crack was measured using both techniques. At longer crack lengths, the results compared well with Dugdale’s and Irwin’s models for crack tip yielding. The TSA methodology requires careful observation of the adiabatic assumption.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Applied Mechanics and Materials (Volume 70)

Pages:

153-158

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.70.153

Citation:

Cite this paper

Online since:

August 2011

Authors:

Rachel A Tomlinson, Ying Du, Eann A Patterson

Keywords:

Caustics, Crack Tip Plasticity, Digital Image Correlation (DIC), Thermoelastic Stress Analysis

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

References

[1] Olden E.J., Patterson E.A., Fatigue and Fracture in Engineering Materials and Structures, Vol. 277 (2004) pp.623-636.

Google Scholar

[2] Sanford R.J., Experimental Mechanics, Vol. 29, (1989) pp.241-247.

Google Scholar

[3] Diaz, F.A., Patterson, E.A., Tomlinson, R.A., and Yates, J.R., Fatigue and Fracture in Engineering Materials and Structures, Vol. 27, (2004) pp.571-583.

Google Scholar

[4] Zanganeh, M., Tomlinson, R.A., and Yates J.R., T-stress determination using thermoelastic stress analysis, Journal of Strain Analysis for Engineering Design, Vol. 43, (2008), p.529537.

DOI: 10.1243/03093247jsa349

Google Scholar

[5] Patki, A.S., Patterson, EA., Fatigue and Fracture of Engineering Materials and Structures, Vol. 33, (2010), pp.809-821.

Google Scholar

[6] Sutton, M A., Orteu, J-J, Schreier, H, Image Correlation for Shape, Motion and Deformation Measurements, (Springer, 2009).

DOI: 10.1007/978-0-387-78747-3

Google Scholar

[7] McNeill, S.R., Peters, W.H., Sutton, M.A., Engineering Fracture Mechanics, Vol. 28, (1), (1987), pp.101-112.

Google Scholar

[8] Yates J.R., Zanganeh M., Asquith D., Tai, Y.H., Plenary lecture, International Conference on Crack Paths (CP 2009), Vicenza, Italy, 23 - 25 September, (2009).

Google Scholar

[9] Du, Y., Diaz Garrido, F.A., Burguete, R.L., Patterson, E.A., Experimental Mechanics, Vol. 51, (2011), pp.45-57.

Google Scholar

[10] Du, Y., Patki, A.S., and Patterson, E.A., Paper No. 270, Proc of SEM Annual Conference, June 2010, Indianapolis, Indiana, USA.

Google Scholar

[11] Dugdale, D.S., J. Mechs. & Phys. Solids, Vol. 8, (2) (1960) pp.100-104.

Google Scholar

[12] Irwin, G.R., Engng. Fract. Mechs., Vol. 1 (2), (1968), pp.241-257.

Google Scholar

[13] Tomlinson, R.A., Patterson, E.A., Fatigue and Fracture in Engineering Materials and Structures, Vol. 20, (10), (1997), pp.1467-1479.

Google Scholar