Application of Digital Speckle Correlation Method in Observation of Conrete Micro-Crack Damage

Abstract:

The splitting test for concrete specimens in four different dimensions were carried out in order to build the relative even micro-crack damage fields. The real-time whole-field displacements of concrete surface were measured omni-directionally by DSCM(Digital Speckle Correlation Method). Through analyzing the obtained experimental data, two kinds of micro-crack damage parameter are established :one is damage area based on the MCOD (Micro-Crack Opening Displacement) and another is damage variable based on the weighting-damping elastic modulus, which provides a new index and method for characterization of concrete micro-crack damage.

• Periodical: Applied Mechanics and Materials (Volumes 578-579)
• Pages: 1290-1294
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.578-579.1290
• Online since: July 2014
• Authors: Zhen Qiang Wang, Yan Liu*
• Keywords: Damage Parameter, Digital Speckle, Even Damage Field, Multidirectional Split

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DOI: 10.1109/mec.2013.6885289