Coil volumetric and surface defect detection system
US5866820A · kind A · utility
59Cited by
12References
10Claims
0Family size
Inventors
Key dates
| Filing date | Sep 20, 1996 |
| Grant date | Feb 2, 1999 |
| Priority date | — |
| Expiry date | Sep 20, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/044
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A EMAT inspection system is utiliized on sheet metal prior to it being formed or rolled to identify surface defects and sub-surface defects such as pencil pipe inclusions by using ultrasonic Lamb waves with the results being displayed on a remote screen of a display and control system which also records the inspection results and controls the EMAT system.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.