Automated system for non-destructive testing of structure and stress state of metallic materials

Author(s):  
G Velev ◽  
Y Ivanova ◽  
A Markovski ◽  
B Velev
2021 ◽  
Vol 3 ◽  
pp. 17-25
Author(s):  
Борис Велев ◽  
Иван Иванов ◽  
Владимир Каменов

An automated system with two optimized modular devices is presented — MULTITEST-MC010 for research of ferromagnetic materials with the methods for measuring magnetic noise and magneto acoustic emission of Barkhausen and MULTITEST — CD010 for research of mechanical engineering materials with the methods of velocity measurement of longitudinal waves C and attenuation coefficient δof ultrasound. The main approaches and principles for the automated data processing of complex non-destructive testing are presented, as well as the setup of the modular devices of the automated system. For approbation of the system the influence of the heat treatment (hardness) in structural steel 40X on the non-destructive information parameters of the magnetic noise and the magneto acoustic emission — magnetic noise voltage EBN and voltage of the magneto acoustic emission EMAE was studied. The mechanical properties in foundry cast iron samples with complex measurement of the information parameters , C, by simultaneous use of the two modular devices of the system were also studied. The possibility for the complex application of these parameters for non-destructive testing of the mechanical properties after heat treatment in structural steel 40X and the tensile strength in cast iron specimens has been proven.


2021 ◽  
Vol 27 (3) ◽  
pp. 76-84
Author(s):  
A.V. Kulyk ◽  
◽  
P.N. Zheltov ◽  
S.V. Klymenko ◽  
V.V. Chabanov ◽  
...  

Currently, in various industries (engineering, aircraft, energy, etc.) the issue of product quality assurance and control is particularly acute. This is due primarily to the ever-increasing requirements for increasing reliability with increasing loads on products, which entails the strengthening of technical standards. The issue of quality control for rocket and space technology products is especially relevant. Modern power structures of rocket and spacecraft made of polymer composite materials, and especially the body of solid fuel rocket engines (SFRЕ), are multilayer packages of various polymer-composite materials (PKM), obtained and interconnected in the process of manufacturing the body. The efficiency of SFRЕ depends on the quality of the formation of PKM in production conditions. The most important issues are the implementation of production quality control of composite structures, the reliability of control results and the ability to automate the control process. The article presents an automated system of non-contact ultrasonic non-destructive testing, which allows to control the stability of the technological process of forming the composite material of the wall of the SFRЕ body and, if necessary, to adjust it. The probability of detecting zones of anomalous violation of the integrity of the wall material of the SFRЕ housing is carried out due to adaptive algorithms, digital systems of multilevel matrix processing and optimal filtering of the received signals. The automated system of contactless ultrasonic non-destructive quality control of SFRЕ cases allows to register conditions of scanning and control for more visual representation of the defectogram in the expanded look of the case of a product in the course of control and at documentation of its results. The presented results of work on the development of an automated system of non-destructive testing of the integrity of the buildings of the SFRЕ type "cocoon" confirm the possibilities of practical implementation in production.


2014 ◽  
Vol 605 ◽  
pp. 641-644
Author(s):  
Anastasia Karahaliou

Non-destructive testing methods, such as Magnetic Barkhausen Noise method, are widely used on railways for examining the stress state of running railway rails. Detailed information about the morphology of the microstructure features of the rail surface is derived by Scanning Electron Microscopy. Phase composition, hardness and residual stress state of the rails are determined by MBN signal.


2019 ◽  
Vol 952 ◽  
pp. 339-345
Author(s):  
Břetislav Skrbek ◽  
Vladimír Nosek

Only some from series of non-destructive testing methods of material defects are employed for measurement of structural parameters of materials. The principle of acoustic and magnetic structuroscopy of cast irons and steel is explained. The examples of exploitation and equipment are described. At least two methods must be used simultaneously for strength and heat resistance measurement of composites, powder metallurgy products and cast irons. Development of this combined structuroscopy of cast irons. The equipment TELIT 3 was developed for evaluation of cast iron quality at critical sites of complicated castings (cylinder blocks of transport engines). The direction of furher research was indicated – exploitation of magnetic excited acoustic wave and combined structuroscopy of thin composite layers.


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