Data processing of measuring intensity of optical field fringe patterns generated by laser interference measuring means

Introduction. Currently, the introduction of modern methods and means of laser interferometry opens up new possibilities in solving various practical problems under studying properties and processes of defect formation in new materials (laminated, polymeric, composite), and diagnosing the state of structural materials of the product power components at all stages of their life cycle. One of the ways to improve the measurement results quality can be the introduction of new software for the outcome analysis of the intensities of the optical fields of interference patterns uniquely associated with the metered small displacements of control objects surfaces. The work objective is to develop new software for processing data of measuring intensities of the optical fields of interference patterns generated by the optical instrumentation of small linear and angular displacements of the control objects surfaces. The solution is based on the two-way laser interferometer with combined branches that allows increasing the measurement results quality. Materials and Methods. To achieve this purpose, modern software is applied, and the data obtained with new measuring instruments based on new optical interference methods is used. Research Results. New software is developed for processing the measurement results of the intensities of the optical fields of interference patterns generated by the optical instrumentation of small linear and angular displacements of the control objects surfaces based on the proposed two-pass laser interferometer with combined branches. New software allows improving the measurement data quality. It is protected by certificates of the Russian Federation on the state registration of computer programs. Discussion and Conclusions. The proposed software can be used successfully for simulating measurements of small linear and angular displacements of the control objects surfaces in order to create new methods of treatment of the intensities of the optical fields of interference patterns generated by the optical instrumentation based on laser interferometers of various types. The described software and technical solutions received approval at the International scientific conferences in 2016-2017, and they were also presented at the International innovation salons “Inventions Geneva 2017” and “Euroinvent 2017”.