Photoelastic sensors for automatic control system of dam safety

Joanna Konwerska-Hrabowska; Tadeusz Kryszczynski; Tomasz Tomaszewicz; J. Lietz; Wojciech Mazurkiewicz

doi:10.1117/12.49560

1 December 1991 Photoelastic sensors for automatic control system of dam safety

Joanna Konwerska-Hrabowska, Tadeusz Kryszczynski, Tomasz Tomaszewicz, J. Lietz, Wojciech Mazurkiewicz

Proceedings Volume 1554, Second International Conference on Photomechanics and Speckle Metrology; (1991) https://doi.org/10.1117/12.49560
Event: San Diego, '91, 1991, San Diego, CA, United States

Abstract

Photoelastic sensor with fringe image transfer by an image-guide to a computer for stress analysis was constructed for those applications where the place of measurements is hard to reach and electrical instruments are not permissible. Two types of sensors are presented: one, disc-like, for uniaxial stress observations and the second one, called a hollow glass cylinder, with axially bored stress concentrator for biaxial stress measurements. Sensor is a central cylinder glass cemented in a cubical concrete block. The sensor is connected to autocollimating polariscope, which allows the sensor to be lit and transport an isochrome image to digital image processor card. The numerical analysis of the fringes images is done in many ways. The original programs for the analysis are presented.

Citation Download Citation

Joanna Konwerska-Hrabowska, Tadeusz Kryszczynski, Tomasz Tomaszewicz, J. Lietz, and Wojciech Mazurkiewicz "Photoelastic sensors for automatic control system of dam safety", Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); https://doi.org/10.1117/12.49560

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