International Institutions in the Field of Analytical Chemistry and Russian Participation in Their Activities

In this paper, a systematic study of the microstructure damage process of metals and alloys was carried out. The main elements of the microstructure surface image, as well as the rules for the formation and interaction of rough slip traces and cracks to determine the model of damage accumulation on the image of the microstructure surface under cyclic loading are determined. A classifier that allows to determine the number of loading cycles before a sample goes out of service is proposed. A modernized structure of the convolutional neural network was developed to classify images of the damaged microstructure of the metals and alloys surface. The proposed classifier for determining the number of loading cycles made it possible to achieve a classification accuracy of 78.43%.

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Determining the Resource of Safe Operation for Objects by Images

Андреев

Andreeva

Gai

et al. 2020

E3S Web Conf.

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Reference materials of the new grades of nickel superalloys and their use in spectral analysis

Dvoretskov

Petrov

Orlov

et al. 2018

Zavod. lab., Diagn. mater.

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Development of rapid method of spectral analysis capable of accompanying all the stages of nickel superalloy production is a hot topic of the analytical control of nickel superalloys. To ensure high accuracy of the results obtained by the methods of optical emission spectrometry and X-ray fluorescence spectrometry, reference materials (RM) adequate in composition to the analyzed samples are to be used. The lack of RM for novel grades of modern nickel alloys, entails the necessity of their development and certification. A methodical approach to the development and production of RM of new grades of nickel superalloys is presented. It is shown that production of the corresponding RM for spectral analysis apart from obvious requirement regarding the absence of defects (shells, cracks, nonmetallic inclusions, isolated zones differing in the content of alloying elements and impurities) requires also elimination of the areas of increased microporosity. In this case, the samples are rejected and melted down, the smelting modes of the CO blanks being adjusted if necessary. We have studied the structure and homogeneity of the manufactured RM and determined the certified values of the reference materials for nickel superalloys of the type VZhM, VKNA, etc. The potentiality of using the developed RM for optical emission spectroscopy with spark excitation and X-ray fluorescence analysis are considered. It is shown that optical emission spectroscopic analysis with spark excitation requires RM sets most close in composition to the analyzed samples when plotting a calibration characteristic, whereas when using X-ray fluorescence analysis, combined sets of RM are appropriate for analysis of the alloy grades similar in composition. The metrological characteristics of the reference materials of approved types (certified reference materials) for the spectral analysis developed at FSUE VIAM for the last seven years are presented.

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Evolution of laboratory researches and diagnostics of materials

Махутов

2022

Zavod. lab., Diagn. mater.

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The research laboratories of scientific and industrial enterprises both in our country and abroad at all stages of industrial development faced all the new problems of materials science: determination of the chemical composition, basic characteristics, structural states, physical and mechanical properties of materials which entailed the necessity of laboratory, bench and field tests. Proceeding from the results obtained, decisions are made on the prospects of the design, development and improvement of traditional structural materials and technologies, as well as on their use in various civil and defense industries. Starting from 1932 the results of these studies are systematically highlighted in the publications of the journal « Industrial Laboratory. Diagnostics of materials» throughout the 90-year history of the journal. An emphasis is made on the key problems of formation of the chemical composition and structure, complex tests and certification of new materials and technologies with the subsequent use of the results in pilot and serial industrial production. Promising scientific directions and results of the implementation of the most important national and international concepts, strategies and programs aimed at ensuring the improved safety and security of man, nature and the technosphere are considered. Still much attention will be paid in the future to the results of complex mathematical, analytical, and digital studies, methodology of physicochemical and mechanical tests, the use of multiparameter methods and diagnostic tools for analysis of materials, substances, and living organisms at nano-micro-meso-macro levels, as well as to the mathematical and physical modeling of both dangerous and effective protective processes in engineering, sociology and management.

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International Institutions in the Field of Analytical Chemistry and Russian Participation in Their Activities

Cited by 3 publications

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Determining the Resource of Safe Operation for Objects by Images

Determining the Resource of Safe Operation for Objects by Images

Reference materials of the new grades of nickel superalloys and their use in spectral analysis

Evolution of laboratory researches and diagnostics of materials

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