Device for detecting position of steel bar in structure and method thereof
US7620145B2 · kind B2 · utility
0Cited by
2References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 16, 2007 |
| Grant date | Nov 17, 2009 |
| Priority date | — |
| Expiry date | Mar 31, 2028 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01B15/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Gamma rays, X-rays or ionizing irradiations from two radiation sources penetrate through a steel bar in a reinforced concrete structure. Images of the steel bar are thus projected on two films. Through geometric relationships between the images and the steel bar itself, thicknesses between the steel bar and surfaces of the reinforced concrete structure are obtained. The position of the steel bar obtained according to the present invention is reliable and accurate. And the data obtained can be used for structure safety.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.