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Proceedings Paper

Photoelastic sensors for automatic control system of dam safety
Author(s): Joanna Konwerska-Hrabowska; Tadeusz Kryszczynski; Tomasz Tomaszewicz; J. Lietz; Wojciech Mazurkiewicz
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Paper 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.

Paper Details

Date Published: 1 December 1991
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Proc. SPIE 1554, Second International Conference on Photomechanics and Speckle Metrology, (1 December 1991); doi: 10.1117/12.49560
Show Author Affiliations
Joanna Konwerska-Hrabowska, Warsaw Univ. of Technology (Poland)
Tadeusz Kryszczynski, Institute of Meteorology and Water Management (Poland)
Tomasz Tomaszewicz, Warsaw Univ. of Technology (Poland)
J. Lietz, Institute of Meteorology and Water Management (Poland)
Wojciech Mazurkiewicz, Institute of Meteorology and Water Management (Poland)


Published in SPIE Proceedings Vol. 1554:
Second International Conference on Photomechanics and Speckle Metrology
Fu-Pen Chiang; Fu-Pen Chiang, Editor(s)

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