Method and apparatus for measurement of density profiles in wood composites, using acoustic emission
US4854172A · kind A · utility
7Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1988 |
| Grant date | Aug 8, 1989 |
| Priority date | — |
| Expiry date | Sep 22, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0238
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and apparatus for evaluating the density profile of a wood-derived specimen. A sample of the material is mounted on a lathe and rotated at high speed. An acoustic emission transducer is coupled to a cutting tool, brought into contact with the specimen to produce an AE signal, as the tool is moved across the thickness of the rotating sample. The acoustic emission signal is then transformed into an electrical signal and the resultant electrical signal is amplified and transmitted to a second amplifier for further amplification and analysis of the signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.