Reference-Free Method for Thickness Gaging of a Test Object and Measuring the Speed of Longitudinal and Transverse Waves in It Based on Echo Signals Picked by an Antenna Array
- Authors: Bazulin E.G.1, Vopilkin A.K.1
-
Affiliations:
- ECHO+ Scientific Production Center
- Issue: Vol 55, No 6 (2019)
- Pages: 463-475
- Section: Acoustic Methods
- URL: https://journals.rcsi.science/1061-8309/article/view/181900
- DOI: https://doi.org/10.1134/S1061830919060032
- ID: 181900
Cite item
Abstract
A reference-free method is proposed for determining the speed of longitudinal and transverse vertically polarized waves and the thickness of a test object based on comparing the measured and calculated echo signals reflected from the boundaries of the test object when using an antenna array operating on a zero tilt angle wedge in the double scanning mode. Results of numerical and model experiments confirming the efficiency of the method are presented. Using this method in a model experiment, it has proved possible to measure the thickness of a test object and the speed of longitudinal and transverse waves in it with a relative error (accuracy) of approximately 0.25%. The method can be used to characterize anisotropic properties of test objects, providing information about their physical and mechanical properties.
About the authors
E. G. Bazulin
ECHO+ Scientific Production Center
Author for correspondence.
Email: bazulin@echoplus.ru
Russian Federation, Moscow, 123458
A. Kh. Vopilkin
ECHO+ Scientific Production Center
Email: bazulin@echoplus.ru
Russian Federation, Moscow, 123458