Experimental Investigation of a Piezo-Optical Transducer for Highly Sensitive Strain Gauges

The characteristics of a piezo-optical transducer of a new design with high strain sensitivity at compact size have been studied.The original form of the photoelastic element provides a considerable increase in the stress in its working area at a given external force, resulting in an increase in the...

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Bibliographic Details
Published in:Optoelectronics, instrumentation, and data processing instrumentation, and data processing, 2018-03, Vol.54 (2), p.175-180
Main Authors: Paulish, A. G., Zagubisalo, P. S., Barakov, V. N., Pavlov, M. A.
Format: Article
Language:English
Subjects:
Lasers
Optical Devices
Optics
Photonics
Physical and Engineering Fundamentals of Microelectronics and Optoelectronics
Physics
Physics and Astronomy
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Summary:The characteristics of a piezo-optical transducer of a new design with high strain sensitivity at compact size have been studied.The original form of the photoelastic element provides a considerable increase in the stress in its working area at a given external force, resulting in an increase in the sensitivity of the transducer. The main characteristics of the transducer were measured using a specially designed device. The strain at a given applied force was calculated using a developed mathematical model of the transducer. As a result, the sensitivity to the relative strain was Δ x / x =3 · 10 −10 , the dynamic range was at least four orders of magnitude higher and the gauge factor three orders of magnitude higher than those of strain-resistive gauges.
ISSN:8756-6990
1934-7944
DOI:10.3103/S8756699018020097