Method and apparatus for measurement of material condition
US10324062B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 22, 2014 |
| Grant date | Jun 18, 2019 |
| Priority date | — |
| Expiry date | Jan 2, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R27/16
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
System and method for characterizing material condition. The system includes a sensor, impedance instrument and processing unit to collect measurements and assess material properties. A model of the system may be used to enable accurate measurements of multiple material properties. A cylindrical model for an electromagnetic field sensor is disclosed for modeling substantially cylindrically symmetric material systems. Sensor designs and data processing approaches are provided to focus the sensitivity of the sensor to localize material conditions. Improved calibration methods are shown. Sizing algorithms are provided to estimate the size of defects such as cracks and corrosion. Corrective measures are provided where the actual material configuration differs from the data processing assumptions. Methods are provided for use of the system to characterize material condition, and detailed illustration is given for corrosion, stress, weld, heat treat, and mechanical damage assessment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.