Ultrasonic Transducer Performance Requirements. Phase III.
Abstract
Simplified test methods are presented for assessing performace parameters of 5 and 10 MHz contact type ultrasonic transducers used in Air Force field and depot level nondestructive inspection. Ultrasonic transducer performance parameters covered are: Overall Appearance, Beam Exit Point, Beam Angle, Skew Angle, Beam Divergence Angle, Center Frequency, Pulse Length, Dead Zone, Signal-to-Noise Ratio, and Overall System Sensitivity. Requirements are given for the ultrasonic instrument to be used for the tests. The importance of maintaining an initial excitation pulse to certain specified conditions, such as a spike or single cycle bipolar spike with duration less than 0.5 mircrosec, to achieve uniformity and instrumentally unbiased test results is addressed, methods are also described for establishing a specified initial excitation pulse by adjusting control on the ultrasonic instrument. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 01, 1981
- Accession Number
- ADA103780
Entities
People
- Cecil M. Teller
- Gary L. Burkhardt
- Hegeon Kwun
Organizations
- Southwest Research Institute