Accession Number : AD0753505

Title :   Ultrasonic Device for the Excitation and Reception of Sheer Waves,

Corporate Author : FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO

Personal Author(s) : Zudov,I. A.

Report Date : 24 NOV 1972

Pagination or Media Count : 9

Abstract : The invention pertains to an ultrasonic device for the excitation and reception of sheer waves, incorporating a transducer (for example, a Y-section piezo electric crystal) and a damping rod acoustically coupled to it. The distinguish-feature of the device is the fact that, for the purpose of extending the working frequency band and determining the rigidity characteristics of materials with a high attenuation coefficient, the lateral surface of its rod is threaded, while the free extremity, with a platformed end face, is tapered on two sides at an angle of not less than 45 degrees to the diametrical plane parallel to the sheer oscillation polarization. Moreover, this same damping rod is designed so as to have a dimensional ratio of 1.6--2.2 longitudinal oscillation wavelengths to its diameter.

Descriptors :   (*NONDESTRUCTIVE TESTING, ULTRASONIC RADIATION), (*ACOUSTIC DETECTORS, PIEZOELECTRIC TRANSDUCERS), USSR, PATENTS

Subject Categories : Test Facilities, Equipment and Methods
      Acoustic Detection and Detectors

Distribution Statement : APPROVED FOR PUBLIC RELEASE