In-situ non-destructive audiosonic identification system for visco-elastic materials
US6289734A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 1, 1999 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Mar 1, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/02827
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
The present invention provides a portable test system for in-situ, non-destructive identification of visco-elastic material. The system includes a probe-like member coupled to a controller, wherein the controller is responsive to an output signal from the probe-like member for determining properties of the visco-elastic material. The probe-like member includes a longitudinally extending housing. A transducer mechanism is operably positioned within the housing. The transducer mechanism includes an indentation tip member, wherein the indentation tip member is extendable through the housing. A load mechanism is provided for loading the transducer mechanism with a desired constant load, causing the indentation tip member to extend through the housing to perform an indentation. A force calibration mechanism is provided for calibrating the application of a fixed force between the indentation tip member and the visco-elastic material. A mechanism is provided for applying an audiosonic signal to the visco-elastic material via the transducer mechanism, wherein response to the audiosonic signal the transducer mechanism provides an output signal representative of identification of the visco-e…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.