Michelson Interferometer Based Displacement Measurement Using Video Processing

• Authors: V. Bocekci , H. Varol
• Languages of publication: EN

Abstracts

EN

In this study, investigation of video processing method which is a new technique for precision displacement measurement is presented. The video processing method was integrated with an interferometric system and the thermal expansion results and linear thermal expansion coefficients of a heated sample metals were compared with theoretical results. Michelson interferometer setup was used in our study due to its advantages in precision displacement information of a visual output, called interferograms. In the experimental studies, signals of interferograms containing displacement information were obtained from the measurement system. The amount of displacement in the sample metals under the temperature variation due to thermal expansion was measured with the analysis program, written in Matlab/Simulink environment, with a micrometer precision. The measured displacement amounts were compared with the results of theoretical calculations. According to the theoretical values, the relative error of the values measured with video processing based method, was found found to be 0.3%

Keywords

EN

07.60.Ly; 81.05.Bx; 07.05.Pj

Discipline

• 07.05.Pj: Image processing(see also 42.30.Va in optics; 87.57.-s Medical imaging in biological and medical physics; 95.75.Tv Digitization techniques in astronomy)
• 81.05.Bx: Metals, semimetals, and alloys
• 07.60.Ly: Interferometers

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 4
• Pages: 934-936

Dates

published

2015-04

Contributors

author

V. Bocekci

• Istanbul Technical University, Department of Electronics and Communication Engineering, Engineering Faculty, 34722 Istanbul, Turkey

author

H. Varol

• Marmara University, Department of Electronic-Computer Education, 34722 Istanbul, Turkey

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Identifiers

DOI

10.12693/APhysPolA.127.934