Accession Number : AD0675465

Title :   ULTRASONIC PULSE-ECHO SPECTROSCOPY.

Descriptive Note : Technical rept.,

Corporate Author : ARMY MATERIALS AND MECHANICS RESEARCH CENTER WATERTOWN MASS

Personal Author(s) : Gericke,Otto R.

Report Date : JUN 1968

Pagination or Media Count : 16

Abstract : Basic requirements for the use of spectroscopic techniques in the field of ultrasonic pulse-echo inspection are discussed. Specialized electronic instrumentation developed for ultrasonic spectroscopy and examples illustrating the practical usefulness of the equipment are described. It is shown that the microstructure of metals, for instance, can be determined on the basis of the spectral signature of the ultrasonic back-echo and that the interpretation of defect indications in terms of actual defect geometry can be improved by spectrum analysis. (Author)

Descriptors :   (*NONDESTRUCTIVE TESTING, *ULTRASONIC RADIATION), MICROSTRUCTURE, TRANSDUCERS, SPECTRUM ANALYZERS, SPECTRUM SIGNATURES, METAL PLATES, GRAIN STRUCTURES(METALLURGY), WELDS, STEEL, ALUMINUM, COPPER, PULSES

Subject Categories : Properties of Metals and Alloys
      Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE