Method for representing elastic parameters of object surfaces
US4603585A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 15, 1985 |
| Grant date | Aug 5, 1986 |
| Priority date | — |
| Expiry date | Mar 15, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N2291/2632
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A method for representing elastic parameters of object surfaces by scanning the object surface with a focused acoustic beam and detection of the interferences between the ultrasonic beams specularly reflected at the object surface and the ultrasonic beams emitted from the object surface after excitation of surface waves in which either two raster-shaped scannings of the object surface are carried out at different focus positions relative to the object surface or successive scannings are carried out with acoustic beams of different frequency. Reflection signals associated with identical raster points form a difference signal which is used for representing the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.