Influence of the depth and morphology of real cracks on diffuse ultrasound in concrete: A simulation study |
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| Affiliation: | 1. Civil and Environmental Engineering Department, Barcelona Tech, Polytechnic University of Catalonia, UPC, Jordi Girona 1–3, 08034 Barcelona, Spain;2. CAPES Foundation, Ministry of Education of Brazil, Brasília - DF, 70040-020, Brazil;3. Smart Engineering Ltd., Secretari Coloma 119, 08024 Barcelona, Spain;4. Institute of Physical and Information Technologies Leonardo Torres Quevedo (ITEFI), CSIC, C/Serrano 114, 28006 Madrid, Spain;5. Civil Construction Engineering Department, Polytechnic School of University of São Paulo, Professor Almeida Prado, Trav. 2, 83, 05424-970 São Paulo, Brazil |
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| Abstract: | The aim of the present paper is to simulate the propagation of diffuse ultrasonic energy in concrete in the presence of a real crack. The numerical model is presented and validated by the comparison with experimental data from the literature. Unlike most of the studies which consider a crack as a notch, a realistic crack morphology exhibits partial contacts along its lips. These contacts are modeled in order to study their influence on the diffusion parameters. The feasibility of determining the contact density of the crack is shown, revealing practice implications for non-destructive crack sizing and imaging in concrete. |
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| Keywords: | Diffuse ultrasound Numerical simulation Crack Concrete |
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