Thermal history sensor
US6974249B1 · kind B1 · utility
24Cited by
12References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2004 |
| Grant date | Dec 13, 2005 |
| Priority date | — |
| Expiry date | Mar 17, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01K3/04
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An improved thermal history sensor having multiple glass ceramic substrates with unique compositions is disclosed. By positioning the sensor adjacent to a component subject to thermal stressors, each of the glass ceramic substrates react with a different rate of nucleation and crystal growth and thus yield a specific measure of opacity. By comparing these values representing the opacity for each glass ceramic substrate, or thermal history fingerprint, to baseline data, information about the expected remaining useful lifetime of the component may be obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.