Structure's Condition Monitoring Based on Optical Measurements

Abstract:

In the paper the vision-based method of civil engineering constructions in-plane deflection measurement and state monitoring is presented. The displacement field of the analyzed structure resulting from a load was computed by means of the digital image correlation coefficient. The application of homography mapping enabled the deflection curve to be computed from two images of the construction acquired from two distinct points in a space. There developed methodology, created software tool as well as experimental results obtained from tests made on lab set-ups and a civil engineering construction are investigated. The experiments are carried out on the lab setup consisting of SRL high resolution digital cameras and the steel frame loaded by a point force. The vision based method results are compared with other contact and non-contact measurement techniques. The deflection of the tram viaduct is investigated and results are compared with the data obtained by the interferometric radar.

• Periodical: Key Engineering Materials (Volume 518)
• Pages: 338-349
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.518.338
• Online since: July 2012
• Authors: Piotr Kohut, Krzysztof Holak, Tadeusz Uhl, Krzysztof Krupiński, Tomasz Owerko, Przemysław Kuraś
• Keywords: Deflection Measurement, Digital Image Correlation (DIC), Image Registration, Non-Contact Measurement, Optical Measurement System, Radar Interferometer

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