Abstract
Ultrasonic velocity is widely used for nondestructive evaluation of material properties. In cases where the thickness of the test piece is not precisely known or varies spatially, it is desirable to be able to determine the ultrasonic velocity and the sample thickness simultaneously. In immersion tests, the velocity and the thickness may be determined simultaneously by measuring a number of times-of-flight [cf. Kuo etal., J. Acoust. Soc. Am. 88, 1679–1682 (1990)]. In this work the ‘‘simultaneous’’ method was tested in four different configurations of pulse echo and through transmission and was applied to the characterization of porosity in graphite polyimide and graphite–epoxy composites. In addition, the velocity-thickness method was also implemented with water squirters. [Work supported by Center for NDE, Iowa State University.]
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
