Abstract
The paper describes high-precision contactless optical devices for measuring small linear and angular displacements of the surfaces of control objects based on modern laser technologies and new methods of optical interferometry. A new scientific-based technical solution has been proposed, which allows one to provide continuous protection against the influence of external mechanical loading in the measurement process. The proposed technical solutions are successfully used to solve actual scientific and industrial problems and can also be successfully used to control the quality of structural materials and diagnostics of the state of goods under operating conditions in mechanical engineering, shipbuilding, aircraft construction, etc.
Highlights
The development and introduction of new high-precision measuring tools and technologies for monitoring the quality of structural materials and diagnostics of the state of goods under operational conditions are currently relevant and require in solving many scientific and applied problems [1,2,3]. Promising in this case is the use of contactless means of measuring small displacements of the surfaces of control objects based on modern laser technologies and new methods of optical interferometry
The device [4] contains optically coupled and sequentially placed source of coherent optical radiation 1, optical system 2, beam splitter 3, reflector 4 fixed on the surface 5 of the test object 6, and screen 7, with a photodetector (PD) 8 installed on it
The interference pattern (IP) is a set of rings 10 of various intensities, which are projected onto the screen 7
Summary
The development and introduction of new high-precision measuring tools and technologies for monitoring the quality of structural materials and diagnostics of the state of goods under operational conditions are currently relevant and require in solving many scientific and applied problems [1,2,3] Promising in this case is the use of contactless means of measuring small displacements of the surfaces of control objects based on modern laser technologies and new methods of optical interferometry. This allows one to significantly improve the accuracy and informativeness of the results of the study by acoustic methods of non-destructive testing
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