Method and apparatus for measuring wall thickness, ovality of tubular materials
US10962358B2 · kind B2 · utility
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4References
20Claims
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Key dates
| Filing date | Jul 12, 2018 |
| Grant date | Mar 30, 2021 |
| Priority date | — |
| Expiry date | Sep 2, 2039 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N29/46
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed is a system and method for ultrasonic measurement of the average diameter and roundness profile of a tube. A roundness algorithm represents the angular dependence of the tube surface profile as a sum of Fourier components, each component being a harmonic representing an integer number of undulations per revolution, with “0” (the first harmonic) corresponds to an average circle associated with the tube outer surface. A calibration block is used to calibrate the first harmonic, representing the average tube diameter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.