Zobrazeno 1 - 10
of 24
pro vyhledávání: '"G. E. Konovalov"'
Publikováno v:
Pribory i Metody Izmerenij, Vol 9, Iss 2, Pp 142-154 (2018)
The lack of information about the features of processes of the surface wave's transformation into volume waves and its scattering in metal objects with ledge, slots, grooves and the others is one of the obstacles to improve of the acoustical testing
Externí odkaz:
https://doaj.org/article/1e7f259e18b049fc9b39f5c9f49c9f51
Publikováno v:
Pribory i Metody Izmerenij, Vol 7, Iss 3, Pp 286-295 (2016)
Laser pulse simulation of the surface waves and its receiving by contact piezoelectric probes is perspective direction to detect surface defects. The aim of this work was to determine optimal conditions for detection of the real fatigue cracks of nea
Externí odkaz:
https://doaj.org/article/e4089cba64f0445a8b2957410131ce28
Publikováno v:
Pribory i Metody Izmerenij, Vol 0, Iss 2, Pp 121-128 (2015)
New distinctive features of the elastic wave excitation and propagation when the Rayleigh wave probes used have been discussed. It was principally shown that such probes can be used not only to find surface defects but to find vertically oriented def
Externí odkaz:
https://doaj.org/article/aefffa9a0dbe48b1bd1acf1a886d6930
Publikováno v:
Litʹë i Metallurgiâ, Vol 0, Iss 3, Pp 148-151 (2011)
In the report perspective methods of diagnostics of surface layers state of products after various technological processes (a face hardening by means of induction or after cementation, coating) are viewed. The testing is carried out to geometrical at
Externí odkaz:
https://doaj.org/article/f5cd5a7b75dd431bb26f8db4c1e7a3d7
Publikováno v:
Litʹë i Metallurgiâ, Vol 0, Iss 2-1, Pp 102-105 (2006)
The results of development of the indicator of highstrength pig-iron are submitted in the report. The indicator using allows to carry out the testing of the pig-iron structure in conditions of manufacture without additional preparation of the casting
Externí odkaz:
https://doaj.org/article/2b13ad715931419098c6584899898d1a
Publikováno v:
Litʹë i Metallurgiâ, Vol 0, Iss 4, Pp 95-100 (2004)
The problems of structure-and defectoscopy of cast irons by supersonic method are examined. The new principle schemas of ultrasonic measurings, constructions of acoustic transformers are presented and their analysis is carried out. The results of inv
Externí odkaz:
https://doaj.org/article/aa86c765c6bb468b874039191bfecee8
Autor:
V. R. Bajev, G. E. Konovalov, Ja. V. Artemenko, M. V. Asadchaja, K. A. Filippov, P. S. Gurchenko, M. A. Tishchenko
Publikováno v:
Litʹë i Metallurgiâ, Vol 0, Iss 2, Pp 85-89 (2004)
The article describes using of ultrasonic waves for determination of solid properties of cast iron and case hardened of steel objects. The possibility of evaluation of the gray iron type by indexes of speed of longitudinal and surface waves is shown.
Externí odkaz:
https://doaj.org/article/57cefe18983048cfa7c8446296621b28
Autor:
A. L. Majorov, G. E. Konovalov
Publikováno v:
Litʹë i Metallurgiâ, Vol 0, Iss 2-2, Pp 129-131 (2005)
The analysis of features of non-destructive ultrasonic testing of castings of products is presented. It is shown, that for the testing shadow and mirror shadow methods should be used. It is preferable the application of special transducers with acous
Externí odkaz:
https://doaj.org/article/bc7cbb44fb40492d8574faf0954aa892
Publikováno v:
Litʹë i Metallurgiâ, Vol 0, Iss 2, Pp 170-171 (2004)
It was concluded that the ultrasonic techniques are sensitive to the changes in the graphite morfology, thus they can also be used to predict the mechanical properties of cast iron. On the basis of the former an Indicator of ductile cast iron has bee
Externí odkaz:
https://doaj.org/article/e2f8c8308cba48c8b74bd2e2dc95b767
Autor:
P. P. Prokhorenko, G. E. Konovalov, A. R. Baev, A. L. Majorov, P. S. Gurchenko, M. A. Tishchenko
Publikováno v:
Litʹë i Metallurgiâ, Vol 0, Iss 1, Pp 54-55 (2002)
The results of investigation of methods of supersonic inspection and structureskopy of foundry production, being used in auto- and tractor-building are presented. On basis of using of conical waves there are given optimal schemas of quality control o
Externí odkaz:
https://doaj.org/article/de287f94ea474ab697cdccb4af10e288