System and method for detecting debonding in rubber coated rolls
US6399949B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 22, 2000 |
| Grant date | Jun 4, 2002 |
| Priority date | — |
| Expiry date | Jan 22, 2021 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N33/44
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An infrared inspection system and an induction heating system used in conjunction enable the inspection of rubber coated rolls, such as rolls used in the pulp and paper industry. The system effects non-destructive inspections of rubber coated rolls to detect a debonded condition between the metal core and rubber coating. The method includes supporting a roll for inspection, evenly heating or cooling the roll, and observing a thermal transient of the roll generated by the evenly heating process. Using an infrared camera, observed areas that are not transferring heat uniformly with respect to neighboring areas are suspected debonded areas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.