Immersion Testing of Curved Profile Objects by Surface Ultrasonic Waves

Dymkin, G. Ya.; Kirikov, A. V.; Бондарчук, К.А.

doi:10.1134/s1061830922080034

Cited by 2 publications

(1 citation statement)

References 1 publication

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“…Опробуется в производственных условиях методика опреде-ления степени натяга при напрессованном сочленении двух деталей с помощью рэлеевских волн [17]. В работе [18] авторами предложен способ контроля изделий с плоской и криволинейной поверхностью рэлеевскими волнами в иммерсионном варианте, как трещин, так и дефектов с гладким профилем глубиной от долей длины волны.…”

Section: Introductionunclassified

Ultrasonic Thread Surface Inspection of Railroad Car Wheels and Locomotive Tires Using Rayleigh Waves

Platunov,

Muravev,

Muraveva

2023

Intellekt. Sist. Proizv.

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Ultrasonic surface inspection of cylindrical objects using the Rayleigh wave echo method has many advantages. Despite strict requirements for surface cleaning, the method is widely implemented in industries and transport, for example on the all-rolled wheel thread or tires of railroad rolling stock. Taking into account the ability of the Rayleigh wave transducer to receive waves with a side ('back') lobe of the ray diagram, the influence of possible contamination or excess of contact fluid on the input surface on the control results, it becomes particularly difficult to explain the position and amplitude of the signal. Using mathematical modeling and experimental studies, the ray diagrams of Rayleigh wave piezoelectric transducers with the 'back lobe' characteristic of piezoelectric transducers of this type were obtained. The efficiency of emission and (or) receiving depends on the parameters of control and apparatus; this effect is more evident if the width of the transducer piezoelement deviates (e.g., during fabrication) and the frequency varies within 20 %, allowed by GOST R 55724-2013. The acoustic path of the Rayleigh wave reflected from the flaw with a diameter of 7 mm on the wheel thread is experimentally constructed and tested on the model. It is shown that the amplitude of the echo-signal changes nonuniformly, the local maxima obtained experimentally reach 9 dB relative to the exponential relation characteristic of propagation over a boundless surface. The reason for such phenomena lies in multiple re-reflections of waves from the boundaries on the tread surface of railway wagon wheels and locomotive tires (rim chamfer, ridge to ridge transition) and their further interference.

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Section: Introductionunclassified

Ultrasonic Thread Surface Inspection of Railroad Car Wheels and Locomotive Tires Using Rayleigh Waves

Platunov,

Muravev,

Muraveva

2023

Intellekt. Sist. Proizv.

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Mirror-shadow method of ultrasonic testing of the railroad wheelset axles using the electromagnetic-acoustic method of wave generation and reception

Platunov,

Murav'ev,

Murav'eva

et al. 2023

Defektoskopiâ

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The amplitude of the received signals during the ultrasonic testing of the railroad wheelset axles using the mirror-shadow method is significantly influenced by the quality of contact of the piezoelectric transducer with the cylindrical surface of the test object compared with the testing of objects with flat surfaces. The key reasons influencing the results of testing are the condition of the entry surface, its curvature, as well as the application force of the piezoelectric transducer. When using electromagnetic-acoustic transducers, the requirements for surface quality are significantly lower, which reduces the probability of errors associated with the quality of contact on a cylindrical surface during acceptance ultrasonic testing by the mirror-shadow method of the railroad wheelset axles after manufacture and repair.

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Immersion Testing of Curved Profile Objects by Surface Ultrasonic Waves

Cited by 2 publications

References 1 publication

Ultrasonic Thread Surface Inspection of Railroad Car Wheels and Locomotive Tires Using Rayleigh Waves

Ultrasonic Thread Surface Inspection of Railroad Car Wheels and Locomotive Tires Using Rayleigh Waves

Mirror-shadow method of ultrasonic testing of the railroad wheelset axles using the electromagnetic-acoustic method of wave generation and reception

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