System consisting of commerical ultrasonic flaw detector with transducer clamped to specimen and x-yy' recorder provides permanent record of crack extension, resulting in clear indication of onset of cracking that is relatively insensitive to plastic deformation.
Ultrasonic monitoring of crack extension
NASA Tech Briefs ; 1 , 4
01.03.1977
Sonstige
Keine Angabe
Englisch
Estimating The Crack-Extension-Resistance Curve
NTRS | 1988
|Uncertain theory for fatigue crack extension
British Library Online Contents | 2008
|Ultrasonic Monitor To Determine Crack-Opening Load
NTRS | 1990
|