Nukem Limited

Ewald Kowol

Gerhard Huschelrath

Ursula Orthen

Dieter Zwanzig

Ekkehard Behl

Hans J Jehl

An electrodynamic transducer (10) is disclosed for non-destructive material testing comprising at least one internal pole shoe (16) of an electromagnet with core (12) and magnetic winding (14). The end section (18) of the internal pole shoe (16) is arranged eccentrically in relation to the center axis (29) of the core (12) and is designed to rotate with the core (12) about the center axis (29) thereof.

Electrodynamic transducer

An electro-dynamic transducer head (107) coming into contact with a workpiece (14) comprises a protective cap (28, 38), which is at least partially surrounded by a sliding protection element (22). The sliding protective element has a basic member (24) with sections (26), which are introduced into recesses (28) by deposit welding.

Electro-dynamic transducer

An electrodynamic transducer head for the non-destructive ultrasonic testing of workpieces (12) comprises an electromagnet having a magnet yoke with an external pole shoe and an internal pole shoe (10, 14) surrounded by the external pole shoe. Exciting and receiving coils (16, 18) are arranged on these pole shoes. To enable the internal pole shoe (10, 14) to be placed directly on the workpiece (12) moving relative thereto without danger, these pole shoes are provided with a protective cap (20) surrounded by a protective ring (22), the end face of the protective ring (22) turned towards the workpiece (12) projecting beyond that of the protective cap.

Electrodynamic transducer head

An electrodynamic instrument transformer head (10) for the non-destructive testing of materials by means of ultrasonics has a pole shoe (20) provided with exciting and receiving coils (14, 16), said pole shoe comprising a slotted end section (24) to prevent a formation of eddy currents. The end section (24) thereby is continuing into a basic body (22) preferably being made of a different material.

Growing community of inventors

Wehrheim, Germany

Ewald Kowol