Method for assessing the damage to a paint-covered composite material, measuring two separate criteria on the spectrogram
US9797829B2 · kind B2 · utility
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5References
10Claims
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Key dates
| Filing date | Apr 14, 2016 |
| Grant date | Oct 24, 2017 |
| Priority date | — |
| Expiry date | Apr 14, 2036 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2021/8472
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for assessing damage to a composite material covered with a polyurethane-type paint is provided. Two separate criteria are measured on a spectrogram obtained by infrared spectrometry, thereby characterizing thermal ageing of the paint, each separate criteria being a measurement on a curve of a spectrum of the spectrogram of a height of a particular peak, thereby giving two independent assessments of the thermal ageing. Then, the two separate criteria are combined together in order to obtain a result of a level of the damage.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.