Composite inspection
US10345267B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2016 |
| Grant date | Jul 9, 2019 |
| Priority date | — |
| Expiry date | Feb 12, 2037 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2694
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of detecting material changes in a composite structure is presented. A pulsed laser beam is directed towards the composite structure comprised of a number of composite materials. Wide-band ultrasonic signals are formed in the composite structure when radiation of the pulsed laser beam is absorbed by the composite structure. The wide-band ultrasonic signals are detected to form data. The data comprises a number of ultrasonic A-scans. The data is processed to identify a plurality of frequency measurements for each of the number of ultrasonic A-scans. A frequency image is displayed using the plurality of frequency measurements. The material changes are represented in the frequency image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.