INFLUENCE OF ROUGHNESS OF THE BOTTOM SURFACE OF A TESTPIECE ON THE PARAMETERS OF ULTRASOUND AND THE READINGS OF ULTRASONIC THICKNESS GAUGES

Authors
GMYRIN SY
Citation
Sy. Gmyrin, INFLUENCE OF ROUGHNESS OF THE BOTTOM SURFACE OF A TESTPIECE ON THE PARAMETERS OF ULTRASOUND AND THE READINGS OF ULTRASONIC THICKNESS GAUGES, Russian journal of nondestructive testing, 30(11), 1994, pp. 851-863
Citations number
18
Categorie Soggetti
Materials Science, Characterization & Testing
Journal title
Russian journal of nondestructive testing → ACNP
ISSN journal
10618309
Volume
30
Issue
11
Year of publication
1994
Pages
851 - 863
Database
ISI
SICI code
1061-8309(1994)30:11<851:IOROTB>2.0.ZU;2-7
Abstract
The influence of a roughness layer covering the bottom surface of a te stpiece on the parameters of the reflected ultrasonic wave and the rea dings of ultrasonic thickness gauges is analyzed. The significant role of interference phenomena and the resulting oscillatory behavior of t he wave parameters as a function of the parameters of the roughness la yer are demonstrated theoretically and experimentally. The extents to which the wave is influenced by roughness layers are compared for the bottom and contact surfaces of a testpiece.