High resolution in situ ultrasonic corrosion monitor
US4539846A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 10, 1984 |
| Grant date | Sep 10, 1985 |
| Priority date | — |
| Expiry date | Jan 10, 2004 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0258
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An ultrasonic corrosion monitor is provided which produces an in situ measurement of the amount of corrosion of a monitoring zone or zones of an elongate probe placed in the corrosive environment. A monitoring zone is preferably formed between the end of the probe and the junction of the zone with a lead-in portion of the probe. Ultrasonic pulses are applied to the probe and a determination made of the time interval between pulses reflected from the end of the probe and the junction referred to, both when the probe is uncorroded and while it is corroding. Corresponding electrical signals are produced and a value for the normalized transit time delay derived from these time interval measurements is used to calculate the amount of corrosion.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.