Bimetallic strip fault detector - has precision roller bed and motor and uses oscillating magnetic fields to probe strip

Abstract

Abstract The fault detector is used for bi metallic Foucault type strip (3). The strip is loaded onto a precision roller bed (1) and a detector head assembly (5) is lowered onto the upper surface. A pantographic beam system (6) enables the head to be moved along rectilinear trajectories over the strip. The head comprises a rubber spacer roller (12) with distance screw adjustment (14) for accurate setting of a composite detector (9). The detector comprises four coils housed in a lower part (15) which is rotated about its vertical axis by asynchronous motor (16). Oscillating magnetic fields are propagated in the strip by one of the coils and monitored by the other three coils to detect faults.

Inventors

• 👤 Claude Vomscheid
• 👤 Jean-Michel Hambaud
• 👤 Jean Vibrac

Bibliographic Details