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TRANSIENT RESPONSE OF PIEZOELECTRIC TRANSDUCER ELEMENTS DERIVED BY Z-TRANSFORM TECHNIQUE Open
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SHORT PULSE PROPAGATION BETWEEN THICK TRANSDUCERS IN A WATER MEDIUM Open
Kozina and Hakarov (1] showed that a transient disturbance in the field of a baffled plane piston radiator consisted of a direct wave which was geometri' cally bounded by a right prism with the piston surface as base and an edge wave which…
A RANDOM SIGNAL ULTRASONIC NDT SYSTEM FOR HIGHLY ATTENUATING MEDIA Open
This paper presents a novel radiofrequency ultrasound pulse echo or pulse-transmission system for materials evaluation or flaw detection.It is specifically designed to provide wide bandwidth operation in very lossy materials such as rubber…
View article: BROADBAND SCATTERING MEASUREMENTS BY ACOUSTIC SPECTROMETER
BROADBAND SCATTERING MEASUREMENTS BY ACOUSTIC SPECTROMETER Open
A widebandwidth near-plane-wave ultrasonic spectrometer is used to measure absorption and propagation velocity in monodispersions of polystyrene spheres in water.The results show good agreement with theorectical calculations based on Alleg…
View article: ON ULTRASONIC COMPRESSION WAVE ABSORPTION IN UNFILLED AND FILLED POLYMERS
ON ULTRASONIC COMPRESSION WAVE ABSORPTION IN UNFILLED AND FILLED POLYMERS Open
The increasing use of ultrasound for testing engineering structures that incorporate polymer components brings with it the need for analytical models by which 'wave absorption and phase velocity may be estimated as functions of frequency.S…
MEASUREMENT OF ULTRASONIC WAVE ABSORPTION AND PHASE VELOCITY IN THIN POLYMER SAMPLES: RECENT DEVELOPMENTS Open
This paper describes several procedures to measure the ultrasonic absorption and phase velocity in thin samples of polymer using a wide bandwidth.through transmission immersion technique.Measurements are described using traditional pulse w…