DE2653923

DE2653923

A device for checking materials by means of an electrodynamic converter which includes a magnet and at least one high frequency coil arranged between the core of the magnet and the workpiece. The high frequency coil includes a first section effective with regard to the generation of ultra sound, and...

Ausführliche Beschreibung

Gespeichert in:
Bibliographische Detailangaben
Hauptverfasser: KOPINECK, HERMANN-JOSEF, ER.NAT, BOETTCHER, WOLFGANG
Format: Patent
Sprache:eng
Schlagworte:
FOR PERFORMING MECHANICAL WORK IN GENERAL
GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIRCHEMICAL OR PHYSICAL PROPERTIES
MEASURING
METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICALVIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY
PERFORMING OPERATIONS
PHYSICS
TESTING
TRANSPORTING
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Beschreibung
Zusammenfassung:A device for checking materials by means of an electrodynamic converter which includes a magnet and at least one high frequency coil arranged between the core of the magnet and the workpiece. The high frequency coil includes a first section effective with regard to the generation of ultra sound, and a second section which is not effective with regard to the generation of ultra sound. In the first section the individual currents in the windings of the high frequency coil have approximately the same direction while the second section is located outside the magnetic field of the magnet or opposite the workpiece behind a shielding.