System and method for identifying incompletely cured adhesive
US6945111B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2004 |
| Grant date | Sep 20, 2005 |
| Priority date | — |
| Expiry date | Sep 28, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/044
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system for inspecting adhesive in a composite structure, such as for soft or improperly cured regions, includes a transducer and a processing element. The transducer can transmit a signal, such as an ultrasonic signal, into the adhesive such that at least a portion of the ultrasonic signal can propagate through the adhesive, reflect off of an interface between the adhesive and another material, and propagate back through the adhesive. Upon exiting the adhesive, then, the transducer can receive a reflected portion of the ultrasonic signal. Thereafter, the processing element can identify a defect, such as soft or improperly cured regions, in the adhesive upon a relationship of an amplitude of the reflected portion of the reflected ultrasonic signal to a predefined threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.