Sensing Mechanical Properties of Rocks and Beams using Photo Stress Analysis


Antony J., Ozerkan N. G. , Olugbenga A., Okeke G., Genç Tokgöz D. D.

11th International Conference on Advances in Experimental Mechanics, Exeter, United Kingdom, 5 - 07 September 2016, pp.1-2

  • Publication Type: Conference Paper / Full Text
  • City: Exeter
  • Country: United Kingdom
  • Page Numbers: pp.1-2

Abstract

In this work, we applied photo stress analysis to study the stress distribution characteristics on the surface of opaque rock and concrete beams with a birefringent coating, subjected to mechanical loading. By analysing the components of the retarded light vectors from the surface of the samples, we provide new insights on the distribution of maximum shear stress at both local and global scales. We also provide the direction map of the major principal stress in the beam sample. The results were also compared with computer simulations where feasible (though not included here) and a good level of agreements were obtained. Overall the study provides a novel experimental pathway for understanding the links between the stress distribution characteristics of such opaque materials from point scale to bulk scale