Stress Analysis Performed by Photoelasticity and Digital Image Correlation

Abstract:

This paper deals with the use of classical experimental technique of photoelasticity as well as modern one – digital image correlation by stress analysis. Both mentioned methods were used to compare the corresponding stress fields obtained on a sample with stress concentrators loaded by bending. The paper contains the basic principle of photoelasticity, methodology of static analysis with polariscope and briefly describes the measurement with low-speed digital image correlation system. Taking into account that the used correlation system does not allow to evaluated stress fields, calculation and visualization of stress fields were realized in program Q-STRESS v.1.0 developed at the authors department.

• Periodical: Applied Mechanics and Materials (Volume 816)
• Pages: 474-481
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.816.474
• Online since: November 2015
• Authors: Miroslav Pástor, Martin Hagara*, Ján Kostka
• Keywords: Digital Image Correlation, Photoelasticity, Q-Stress, Stress Analysis

References

[1] F. Trebuňa, F. Šimčák, J. Bocko, P. Trebuňa, Failure analysis of mechanical elements in steelworks equipment by methods of experimental mechanics, Engineering Failure Analysis, 17(4), 2010, 787-801.

DOI: 10.1016/j.engfailanal.2009.10.011

[2] J.W. Dally, W.F. Riley, Experimental Stress Analysis, Second Edition, McGraw-Hill Book Company, New York, (1978).

[3] M. Sutton, J. -J. Orteu, H. Schreier, Image Correlation for Shape, Motion and Deformation Measurements - Basic Concepts, Theory and Applications, Springer Science+Business Media, LLC (2009).

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

[4] M. Pástor, F. Trebuňa, Application of transmission photoelasticimetry for stress concentration analyses in construction supporting parts, Applied Mechanics and Materials, 611, 2014, 443-449.

DOI: 10.4028/www.scientific.net/amm.611.443

[5] A.S. Kobayashi, Handbook on Experimental Mechanics, VCM SEM, New York, (1993).

[6] F. Trebuňa, F. Šimčák, Handbook on Experimental Mechanics, first ed., Typopress, Košice, (2007).

[7] R. Huňady, P. Frankovský, M. Znamenáková, Verification of strain measurement process by digital image correlation, Acta Mechanica Slovaca, 12(3), 2008, 57-68.

[8] A. Ma et al., A new method to detect soft-tissue deformation based on HAMMER algorithm, IFMBE Proceedings, 39, 2013, 2178-2181.

[9] F. Zhu et al., Measurement of true stress-strain curves and evolution of plastic zone of low carbon steel under uniaxial tension using digital image correlation, Optics and Lasers in Engineering, 65, 2014, 81-88.

DOI: 10.1016/j.optlaseng.2014.06.013

[10] Z. Wang, H. Nguyen, J. Quisberth, Audio extraction from silent high-speed video using an optical technique, Optical Engineering, 53(11), 2014, 1-3.

DOI: 10.1117/1.oe.53.11.110502

[11] R. Wu et al., Determination of three-dimensional movement for rotary blades using digital image correlation, Optics and Lasers in Engineering, 65, 2015, 38-45.

DOI: 10.1016/j.optlaseng.2014.04.020

[12] M. Hagara, R. Huňady, Q-STRESS v. 1. 0 – a Tool for Determination of Stress Fields Using Digital Image Correlation Systems, Procedia Engineering, 96, 2014, 136-142.

DOI: 10.1016/j.proeng.2014.12.132