Method for examining defect in steel bar and apparatus therefor
US7496172B2 · kind B2 · utility
1Cited by
6References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Oct 19, 2006 |
| Grant date | Feb 24, 2009 |
| Priority date | — |
| Expiry date | Dec 8, 2026 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8874
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A penetrating radiation is used to examine a steel bar in a reinforced concrete coordinated with a comparing object. The position and size of the comparing object are known in advance. At first, the steel bar and the comparing object are projected on an imaging device. Then, a magnifying rate of an image size of the comparing object shown on the imaging device is calculated. By using the magnifying rate and by comparing the image sizes of the steel bar and the comparing object on the imaging device, the defect size of the steel bar can be figured out.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.