Computerized and motorized electromagnetic flux leakage internal diameter tubular inspection device
US4675604A · kind A · utility
53Cited by
16References
34Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1985 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Aug 28, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/82
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A device for detecting defects in the bore of a tubular member. The device includes an inspection head including an electromagnet for magnetizing the internal surface of a tubular member. The device also includes a sensor or sensors to detect magnetic flux leakage indicative of a defect. The magnetic flux sensor output is sent to a control-data acquisition system concurrently with signals as to the axial and circumferential position of the defect, which are obtained by their respective encoders. The control-data acquisition system is capable of processing and displaying the data in analog and digital form.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.