Ii. Kryukov et Vg. Aguzumtsyan, MECHANIZED ULTRASONIC TESTING OF STRUCTURALLY INHOMOGENEOUS MATERIALSSUCH AS FOAM PLASTICS, Russian journal of nondestructive testing, 34(2), 1998, pp. 120-128
The design and working principles are described for a mechanized ultra
sonic system for continuous and complete monitoring of structurally in
homogeneous martials, which is used in quality control for rigid foam
plastics by reference to the amplitude and time acoustic parameters, w
hich combines a flaw detector (detects carters) with a diagnostic syst
em for measuring the strength relative to the limiting values set by t
he technical specifications.