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Methods and instruments for the ultrasonic testing of materials
Applied ultrasonic testing of materials
4 other sections not shown
according to Fig acoustic impedance acoustic pressure acoustic velocity aluminium amplifier amplitude angle probes applied approx approximately attenuation axis backwall echo barium titanate beam angle calibrated cast iron coupling CR screen cross-section crystal curve cylindrical damping defects device diameter direction distance echo height echo method edge flaw echoes given immersion technique incident incipient cracks indicated interface interference interfering echoes Krautkramer layer liquid located longitudinal wave maxima and minima maximum measuring metal millimetres multiple echoes normal probes oblique obtained oscillation piezoelectric plate pipe plane plate waves possible produced propagation pulse-echo method quartz quartz plate radiator recording reflection resonance result scale scanning screen picture sensitivity shown in Fig shows sound beam sound field sound pressure sound transmission specimen spherical wave steel surface waves test piece testing installation trans transducer transit transmitting pulse transverse waves tube Ultrasonic Testing usually voltage wall thickness wave length zero zig-zag zone