The Application of Acoustic Method for Diagnostics of Structural Shapes Stress Condition

Григорій Семенович Тимчик, Марина В'ячеславівна Філіппова, Марія Олександрівна Демченко

Abstract


Background. Article is dedicated to the problem of the state quantity value pressure to the structural shape constructions during the process of exploitation without method of acoustic control testing.

Objective.The aim of the paper is the improvement of the acoustic diagnostics of the shape constructions using the acoustic method of control.

Methods. The echo reflection-shadow method for the achievement of the aim of research was proposed.

Results. The acoustic spring connective coefficient was defined for the structural shape of metal constructions, that includes the density and fatness of the contact liquid, the force of pressure to the object of control, angle of the introduction of ultrasonic wave and the material of the control object with the usage the distance of neutral line of the structural shape construction, which allows improving the accurate diagnostics.

Conclusions. The experimental research on the metal with this known chemical state allows defining the acoustic pressure coefficients of the connections of the structural shape of the metal constructions. Comparative analysis was carried out theoretically due to the proposed method of the acoustic diagnostics. It showed the absolutely fault for the pressures of 10 Amp, which is not higher than 3 % from the state of material


Keywords


Structural shape construction; Echo reflection shadows method; Metal construction

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DOI: https://doi.org/10.20535/1810-0546.2016.5.77378

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