Nondestructive proof loading of honeycomb panels
US9523633B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 2014 |
| Grant date | Dec 20, 2016 |
| Priority date | — |
| Expiry date | Nov 17, 2034 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2203/0017
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Techniques for testing whether a bond strength between a faceskin of a panel and a core of the panel exceeds a threshold value are disclosed. The testing includes: adhering a first surface of a sacrificial layer to a pull stub of a flatwise tensile (FWT) test apparatus by way of a first adhesive interface; adhering the second surface of the sacrificial layer to the panel faceskin by way of a second adhesive interface; operating the FWT test apparatus so as to gradually increase a FWT load on the faceskin; terminating the test upon the first to occur of separation of any one or more of the first adhesive interface, the second adhesive interface, the sacrificial layer and separation of the faceskin from the core; and determining that the bond strength exceeds the threshold value when separation of the faceskin from the core is not the first to occur.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.