Ultrasonic transducer

H - Electricity – 04 – R

Patent

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Details

H04R 17/00 (2006.01) B06B 1/06 (2006.01)

Patent

CA 2226724

An ultrasonic transducer for generating and transmitting ultrasonic wave energy of a predetermined frequency to the surface of an object. In one embodiment, a resonator (12) is inserted between the head mass (11) and the piezoelectric crystal (14). The resonator is made from a material having an acoustic velocity equal to or greater than the object, preferably a ceramic such as a silicon carbide or alumina oxide. In another embodiment, the head mass (11) and tail mass (16) are also made from ceramic materials.

L'invention concerne un transducteur ultrasonique servant à générer et transmettre une énergie à onde ultrasonique d'une fréquence prédéterminée sur la surface d'un objet. Selon une réalisation, un résonateur (12) est inséré entre la masse de tête (11) et le cristal piézo-électrique (14). Ce résonateur est constitué d'un matériau dont la vitesse sonique est égale ou supérieure à celle de l'objet, de préférence une céramique telle qu'un carbure de silicium ou oxyde d'aluminium. Selon une autre réalisation, la masse de tête (11) et la masse de queue (16) sont également constituées de matériaux céramiques.

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