Accession Number : ADP002998

Title :   Characterization of NDE Transducers,

Corporate Author : UNIVERSITY OF SOUTHERN CALIFORNIA LOS ANGELES

Personal Author(s) : Lakin,K. M.

Report Date : AUG 1976

Pagination or Media Count : 14

Abstract : A system for characterizing NDE transducers has been implemented which involves both electrical circuit modeling and measurements of the amplitude and phase of the radiation patterns. The field pattern measurements allow a determination of the field at the transducer surface as well as at locations distant from the transducer. The technique is also adaptable to characterizing scattering surfaces treated as apparent sources. The electrical characterization centers around a network model involving a hybrid set of S-parameters of the transducer may be determined and then used to quantitatively predict the transducer performance in scattering experiments. In its simplest form the technique uses water bath experiments and scattering of the transducer surface.

Descriptors :   *Nondestructive testing, *Transducers, Circuits, Models, Measurement, Scattering, Patterns, Amplitude, Theory, Parameters

Distribution Statement : APPROVED FOR PUBLIC RELEASE