Digital image correlation used to analyze a brick under compression test

Alonso Saldaña Heredia; Pedro A. Márquez Aguilar; Arturo Molina Ocampo; Álvaro Zamudio Lara

doi:10.1117/12.2196635

24 August 2015 Digital image correlation used to analyze a brick under compression test

Alonso Saldaña Heredia, Pedro A. Márquez Aguilar, Arturo Molina Ocampo, Álvaro Zamudio Lara

Proceedings Volume 9660, SPECKLE 2015: VI International Conference on Speckle Metrology; 96600R (2015) https://doi.org/10.1117/12.2196635
Event: SPECKLE 2015: VI International Conference on Speckle Metrology, 2015, Guanajuato, Mexico

Abstract

In mechanics of materials it is important to know the stress-strain relation of each material in order to understand their behaviour under different loads. The brick is one of the most used materials in structural mechanics and they are always under loads. This work is implemented using one beam and the speckles created by its reflection. Strain field measurement with noninvasive techniques is needed in order to sense rubber-like materials. We present an experimental approach that describes the mechanical behavior of structural materials under compression tests, which are done in a universal testing machine. In this work we show an evaluation of the displacement field obtained by digital image correlation allowing us to evaluate the heterogeneous strain field evolution observed during these test.

Citation Download Citation

Alonso Saldaña Heredia, Pedro A. Márquez Aguilar, Arturo Molina Ocampo, and Álvaro Zamudio Lara "Digital image correlation used to analyze a brick under compression test", Proc. SPIE 9660, SPECKLE 2015: VI International Conference on Speckle Metrology, 96600R (24 August 2015); https://doi.org/10.1117/12.2196635

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KEYWORDS

Digital image correlation

Image compression

Speckle

Mechanics

Fourier transforms

Error analysis

Reflection

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