Transient electromagnetic method for directly detecting corrosion on conductive containers
US4839593A · kind A · utility
28Cited by
10References
14Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1987 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | Dec 17, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B7/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
There is disclosed a method for directly detecting corrosion on the walls of conductive containers wherein a transmitting antenna induces a current into a portion of the container wall and the decay of the induced current is detected by a receiving antenna, with a record of the decay of the induced current being created. The record is interpreted to determine the presence or absence of a corrosion component, with the corrosion component being caused by the presence of corrosion products having superparamagnetic properties.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.