1
Anmol S Birring, David G Alcazar, Gary J Hendrix, John J Hanley: Method and means for detection of hydrogen attack by ultrasonic wave velocity measurements. Electric Power Research Institute, Flehr Hohbach Test Albritton & Herbert, January 2, 1990: US04890496 (13 worldwide citation)

A method for detecting hydrogen attack by ultrasound wave velocity measurements in which ultrasound waves (e.g. longitudinal, shear, or creeping) are transmitted from one transducer to another transducer along a fixed path through a steel body such as pipe. The velocity of the ultrasound wave is det ...


2
Hegeon Kwun, Anmol S Birring, Gurvinder P Singh, Gary J Hendrix, David G Alcazar: Method of wear monitoring using ultrasonic phase comparison. Association of American Railroads, Antonelli Terry & Wands, December 8, 1987: US04711120 (11 worldwide citation)

A method of monitoring the cylinder wall wear using ultrasonic phase comparison techniques is disclosed. The method comprises the steps of introducing ultrasonic waves in a cylinder wall so that the waves travel through the cylinder wall. A change in the traveling time of the ultrasonic waves travel ...