Accession Number : AD0717099

Title :   A Correlation Between Pulse-Echo Ultrasonic Attenuation and Hardness,

Corporate Author : VIRGINIA POLYTECHNIC INST BLACKSBURG DEPT OF ENGINEERING MECHANICS

Personal Author(s) : Reifsnider,K. ; Sawyer,S.

Report Date : DEC 1970

Pagination or Media Count : 22

Abstract : Nondestructive evaluation and characterization of materials, especially in terms of parameters critical to modern design and fabrication, is a problem of growing magnitude. One example of this problem is the inability of any present nondestructive test technique to definitely establish the yield strength of a fabricated section of steel, especially if spacial gradients of material properties occur. The present report describes some results of one nondestructive method which does offer some improvement in such capabilities and indicates a direction for continued development. In particular, a theoretical correlation is established between pulse-echo ultrasonic attenuation values and hardness for alloys with variable impurity content. Experimental tests which qualitatively support the correlation are also described. (Author)

Descriptors :   (*NONDESTRUCTIVE TESTING, ULTRASONIC RADIATION), (*ULTRASONIC RADIATION, ATTENUATION), HARDNESS, CORRELATION TECHNIQUES, IMPURITIES, METALS, ALLOYS

Subject Categories : Test Facilities, Equipment and Methods

Distribution Statement : APPROVED FOR PUBLIC RELEASE