INVISIBLE CRACKS CAN BE DETECTED: COMPACT MACHINE FOR SITE USE
THE AMLEC PORTABLE FLOW DETECTOR GIVES BOTH VISUAL AND AUDIBLE INDICATION OF CRACKS IN IRON AND STEEL AND CAN OPERATE OVER PAINT FILMS, RUST, DIRT, AND UNDER WATER. A COIL CARRYING AN ALTERNATING CURRENT INDUCES EDDY CURRENTS IN CONDUCTING MATERIALS IN ITS MAGNETIC FIELD. ANY SURFACE CRACK IN THE MATERIAL CAUSES INTENSE VARIATIONS IN THE LOAD ON THE COIL. THE VARIATION OF THE LOAD IS DETECTED BY THE METER SYSTEM AND CAUSES A DEFLECTION ON THE METER. THE FREQUENCY OF SOUND IN THE EARPIECE VARIES IN THE SAME WAY. /RRL/
- Publication Date: 1968-3
Media Info
- Serial:
Subject/Index Terms
- TRT Terms: Cracking; Detection and identification; Detectors; Iron; Measuring instruments; Steel
- Subject Areas: Geotechnology; Highways; Materials;
Filing Info
- Accession Number: 00216506
- Record Type: Publication
- Source Agency: Road Research Laboratory /UK
- Files: TRIS
- Created Date: Oct 13 1994 12:00AM