Ultrasonic realtime determination and display of thickness of chromium on gun barrels
US5182139A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 16, 1991 |
| Grant date | Jan 26, 1993 |
| Priority date | — |
| Expiry date | Sep 16, 2011 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF41A31/02
- WIPO fieldSurface technology, coating
- WIPO sectorChemistry
Abstract
A method for measuring the plating on the inside of a gun barrel, including he steps of providing ultrasonic pulses against a gun barrel to be plated, and plating the inside while monitoring the echoes from said waves from the inside and outside diameters of the barrel with a plurality of transducers aligned to reflect ultrasound waves from the outside and the inside surfaces of the gun barrel. Change in time for the return of waves from the inside surface indicates the change in thickness of plating on the inside of the barrel. The change is calculated by measuring the change in time for the wave to return to its source, and multiplying by the sound velocity.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.