10.14489/td.2018.07.pp.004-019

2018, 07 July

DOI: 10.14489/td.2018.07.pp.004-019

Danilov V. N., Kretov Е. F., Razygraev N. P., Razygraev A. N., Tsukanov M. V.
RESEARCH OF THE ULTRASONIC CONTROL OF METAL BY THE ANGLE BEAM PROBE THROUGH THE CLADDING FUSED LAYER
(pp. 4-19)

Abstract. During an experimental research of the ultrasonic control of metal through cladding fused layer on a sample angle beam probes of shear waves establish presence of the physical phenomenon resulting in occurrence of the second maximum on dependence of a registered reflected signal for a corner of a direction on a reflector (side drilled hole) considerably of a smaller nominal angle of probe in which vicinity the first maximum was observed. Thus mutual angular position and a ratio of amplitudes of these maxima of a signal varies on parameters of the probe and conditions of registration. Presence of the second maximum of a signal theoretically with use of traditional model of acoustic channel of the control through an elastic layer of constant thickness, including, in view of its anisotropic properties to explain it is not possible. Theoretical modeling of directivity characteristics at radiation through a cladding fused layer variable thickness with speed of shear waves, smaller, than in the basic metal, at approximation of its border with metal as surfaces with change of a corner of an inclination have qualitatively shown an opportunity of presence of experimentally established phenomenon. The account of anisotropic properties of a cladding fused layer improves conformity of results of calculations and experiment and confirms an explanation of occurrence of this physical phenomenon and its some features.

Keywords: angle beam probe, shear wave, angle of probe, cladding fused layer, basic metal, side drilled hole, physical phenomenon, corner of an inclination of a surface, ultrasonic testing, directivity characteristic.

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V. N. Danilov (JSC “RPA “CNIITMASH”, Moscow, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
Е. F. Kretov (JSC “Izhorskiye Zavody”, S-Peterburg, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.
N. P. Razygraev, A. N. Razygraev, M. V. Tsukanov (JSC “RPA “CNIITMASH”, Moscow, Russia) E-mail: Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра. , Данный адрес e-mail защищен от спам-ботов, Вам необходимо включить Javascript для его просмотра.

+ - References Click to collapse

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