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Information × Registration Number 0214U003913, 0113U000306 , R & D reports Title Determination by methods of speckle metrology and interferometry of deformation characteristics of materials to estimate parameters of their corruption subject to local fields of plasto-elastic condition popup.stage_title Head Muravsky Leonid, Доктор технічних наук Registration Date 14-03-2014 Organization Karpenko Physico-Mechanical Institute of the National Academy of Science of Ukraine popup.description2 The analysis of the known interferometric methods of reconstruction of rough surface has been conducted. The improved algorithm of reconstruction of waviness and nanorelief of surface is developed by the method of phase-shift interferometry, which provides approximately in 3 times less error as compared to previous. Experimental approbation of the improved algorithm is conducted during the series of researches of surface of compact standards from steel of 08кп at the cyclic loadings, the results of which validified procedure of reconstruction of waviness and nanorelief of test surfaces through this algorithm. The new method of double-step phase-shift electronic speckle-pattern interferometry (ESPI) has been developed, in which the cross-correlation and spectral going is utillized near extracting of blind phase change of reference beam. A computer design confirmed efficiency of both approaches. Method by a double-step phase-shift ESPI is realized through the experimental setting, based on the Twyman-Green interferometer. Reconstructed field of the superficial moving of the probed beam standard, made from duralumin of D16, utillized for the calculation of Poisson's ratio the value of which practically coincides with standard value. Offered and described chart of registration and algorithm of treatment of speckle images for the estimation of spatial sizes of plastic area after the change of surface roughness on the basis of comparison of autocorrelation functions. Experimental approbation of the offered algorithm, confirming him more high antijammingness by comparison to known, is conducted. On the basis of the developed method of SIF and Williams coefficients determination of higher orders the speckle correlation measuring system is improved with the purpose of increase of exactness of measurings. The series of standards of construction materials are investigated at loadings of I and the II types and to the mixed loading for determination of SIF and coefficients of Williams of higher orders. Efficiency of the use of method of digital correlation of спекл-изображений is tested for the increase of exactness of determination of SIF and Williams coefficients of higher orders. Setting is modernized on the base of capacity strainmeter of the controlled from distance action of class of exactness 0,01 with the purpose of sensitisation setting from 10 nm to 1 nm and researches of evolution of amplitudes of resilient hysteresis depending on a temperature. A collective monograph is corrected, in which experimental methods and facilities of ESPI, laser interferometry and DCSI are represented or determination of parameters of local destruction of construction materials. Product Description popup.authors Ільчишин Богдан Дмитрович Беген Іванна Михайлівна Вороняк Тарас Іванович Гаськевич Георгій Ігорович Голинський Іван Стахович Дем'янишин Наталія Михайлівна Дрималик Андрій Романович Кметь Аркадій Борисович Кость Ярослав Павлович Кулик Ігор Іванович Куць Олександр Григорович Личак Олег Васильович Максименко Олександр Парфенович Мельник Микола Омелянович Мицик Богдан Григорович Нечипорук Сергій Анатолійович Половинко Тарас Ігорович Сахарук Олександр Миколайович Франкевич Людмила Франківна Штабський Микола Кірович popup.nrat_date 2020-04-02 Close