Method and apparatus for ultrasonically measuring deviation from straightness, or wall curvature or axial curvature, of an elongated member
US3944963A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 21, 1974 |
| Grant date | Mar 16, 1976 |
| Priority date | — |
| Expiry date | Aug 21, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N29/041
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Apparatus for measuring deviation from straightness, or wall curvature or axial curvature, of an elongated member by ultrasonic pulse-echo techniques comprises at least three ultrasonic transducer means and an associated processing system. In operation, each of the transducer means transmits ultrasonic search signals towards the elongated member and detects signals reflected from diametrically opposed points on a reference surface of the member. From the transmitted search and the received echo signals, a signal is generated in the associated processing system indicating the distance between the face of each transducer means and the associated reference points on the wall surface of the elongated member. The generated distance signals can then be processed to generate signals indicating wall curvature and axial curvature in the plane formed by the diametrically opposed points.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.