Long-range magnetostrictive ultrasonic guided wave scanner system and method
US9915632B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 6, 2016 |
| Grant date | Mar 13, 2018 |
| Priority date | — |
| Expiry date | May 16, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/82
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for non-destructive inspection of a structure includes a magnetostrictive pulser coil and a ferromagnetic strip. The ferromagnetic strip is coupled to the structure adjacent to the pulser coil. A scanner receiver probe is located adjacent to the ferromagnetic strip. The probe includes a probe body, a position encoder, and a magnetostrictive partial loading receiver coil. A magnet applies a biasing magnetic field to the ferromagnetic strip. A pulser system generates a time-varying current in the pulser coil to induce a time-varying magnetization in the ferromagnetic strip to generate guided wave energy in the structure. The probe detects reflected guided wave energy as the probe is moved around the circumference of the structure. A processor controls the pulser system, records guided wave reflections, and process the guided wave and probe position data to generate a one-dimensional image or a two-dimensional image of anomalies in said structure.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.