Method and apparatus for determining vertical density profiles in wood composites, using acoustic emission
US4831880A · kind A · utility
0Cited by
5References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 8, 1988 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | Aug 8, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/0238
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Method and apparatus for determining vertical density profiles in wood composites. A fly cutter is rotated across the edge of a wood composite panel to produce acoustic emissions that themselves produce an RMS voltage. The changes is RMS voltage so produced are recorded and thereby the acoustic emission is recorded. The detected signal is transformed into electrical signals, amplified and transmitted to a suitable detecting transducer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.