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    Por favor, use este identificador para citar o enlazar este ítem: http://hdl.handle.net/10259/9252

    Título
    A cost-effective stereo camera-based system for measuring crack propagation in fibre-reinforced concrete
    Autor
    Mena Alonso, ÁlvaroUBU authority Orcid
    Latorre Carmona, PedroUBU authority Orcid
    González Cabrera, Dorys CarmenUBU authority Orcid
    Diez Pastor, José FranciscoUBU authority Orcid
    Rodríguez Diez, Juan JoséUBU authority Orcid
    Mínguez Algarra, JesúsUBU authority Orcid
    Vicente Cabrera, Miguel ÁngelUBU authority Orcid
    Publicado en
    Archives of Civil and Mechanical Engineering. 2023, V. 23, n. 3
    Editorial
    Springer Nature
    Fecha de publicación
    2023-07-09
    ISSN
    1644-9665
    DOI
    10.1007/s43452-023-00723-6
    Abstract
    This paper shows a new low-cost technology for the measurement of crack propagation in quasi-fragile materials based on a stereo pair of cameras and LED light spots. The two cameras record the displacement experienced by a series of LED white lights. For each frame, the X, Y and Z 3D coordinates of all the centroids of the LED points are obtained. From this information, it is possible to determine the variation of the distance between any two of them. In this case, 2 strips of 12 LED lights each were arranged in such a way that the points of both strips coincided in pairs in height. The algorithm made it possible to monitor the increase in distance that occurred between each pair of lights at the same height. The paper shows the mathematical basis of this technological solution. A test has been carried out by installing this system in a concrete cube 150 mm side and subjected to a wedge-splitting test. The results show that it is possible to monitor the crack propagation (position of the crack front) during the test and to know the crack width too. At present, the accuracy of this technique is only limited by the camera resolution and the computer processing capability.
    Palabras clave
    3D stereo system
    Crack propagation
    Steel fibre-reinforced concrete
    LED lights
    Materia
    Ingeniería civil
    Civil engineering
    Tecnología
    Technology
    Materiales de construcción
    Building materials
    Ingeniería mecánica
    Mechanical engineering
    URI
    http://hdl.handle.net/10259/9252
    Versión del editor
    https://doi.org/10.1007/s43452-023-00723-6
    Collections
    • Artículos AUSINCO
    Atribución 4.0 Internacional
    Documento(s) sujeto(s) a una licencia Creative Commons Atribución 4.0 Internacional
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    Mena-acme_2023.pdf
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