Composite inspection
US10309893B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2016 |
| Grant date | Jun 4, 2019 |
| Priority date | — |
| Expiry date | Dec 12, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0231
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method of detecting inconsistencies 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 a surface of the composite structure. The wide-band ultrasonic signals are detected over a duration of time to form data. The data comprises an ultrasonic A-scan spectrum. The data is processed to identify a structure signal in a frequency domain of the ultrasonic A-scan spectrum. The structure signal of the ultrasonic A-scan spectrum is compared to a structure signal of a composite structure standard to determine whether the inconsistencies are present in the number of composite materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.