TV holography used in the study of failure of rocks and concrete

Jan Tore Malmo; Eiolf Vikhagen; Ole Johan Lokberg

doi:10.1117/12.135320

1 January 1992 TV holography used in the study of failure of rocks and concrete

Jan Tore Malmo, Eiolf Vikhagen, Ole Johan Lokberg

Proceedings Volume 1553, Laser Interferometry IV: Computer-Aided Interferometry; (1992) https://doi.org/10.1117/12.135320
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

The short exposure time and high framing rate of the TV-holography system allow for global interferometric measurements even in industrial environments. In this paper we report some experiences from failure tests on concrete and weak sedimentary rocks. In a set of rock cavity failure tests, TV-holography has been used to monitor the cavity deformations. The technique allows for a complete description of the continuous displacement and deformation of a surface, and has a potential to reveal important information about, e.g., symmetry-breaking processes. Combined with image processing, the technique has been used to study micro-cracks on the surface of concrete blocks during pressure testing. The purpose of these tests was to study the fracture mechanics of concrete, including crack initiation and propagation.

Citation Download Citation

Jan Tore Malmo, Eiolf Vikhagen, and Ole Johan Lokberg "TV holography used in the study of failure of rocks and concrete", Proc. SPIE 1553, Laser Interferometry IV: Computer-Aided Interferometry, (1 January 1992); https://doi.org/10.1117/12.135320

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