Pulsed eddy current sensor probes and inspection methods
US6911826B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2003 |
| Grant date | Jun 28, 2005 |
| Priority date | — |
| Expiry date | Dec 3, 2023 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N27/904
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A pulsed eddy current sensor probe includes a sensor array board. A number of sensors are arranged on the sensor array board and are operable to sense and generate output signals from the transient electromagnetic flux in a part being inspected. Each of the sensors has a differential output with a positive and a negative output. At least one drive coil is disposed adjacent to the sensors and is operable to transmit transient electromagnetic flux into the part. A first and a second multiplexer are arranged on the sensor array board and are operable to switch between the sensors. The first and second multiplexers are connected to the positive and negative outputs of the sensors, respectively.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.