Structural Characterization of Quarry Stone in Experimental Testing Using Digital Image Correlation as a Non-destructive Technique

摘要

In this research the use of digital image correlation technique (DIC) is applied as a non-destructive monitoring method with the aim to obtain the lineal and non-linear behavior of pink quarry stone similar to those found on masonry historical constructions of the 16th century on the central and northern part of Mexico. Uniaxial compression tests were carried out in order to demonstrate the suitability of the DIC technique to represent the behavior of pink quarry stone in terms of displacements and crack propagation regarding to another monitoring methods such as measurements using LVDT sensors. From the experimental tests it was possible to obtain the mechanical properties of pink : quarry stone in terms of stresses, strains, Young's modulus and Poisson's ratio. Incongruences during the elastic stage of the compression tests were found in the analysis of quarry stone by DIC technique regarding the traditional sensors due to the brittle behavior of the material. It was possible to demonstrate the capability of the DIC technique to obtain the full-field displacements mea surement on the material surface and it has the ability to identify the crack propagation on quarries, which is not possible to obtain using the conventional techniques.