الفهرس 
Experimental Setup
2.3-Verification in 2D measurementsOnly 14 pages are availabe for public view
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Abstract
This research work is an endeavor to explore surface
roughness in three dimensions with the aid of on line
computer which is used to analyze the signals representing
roughness.
A system has been developed at the Egyptian National
Institute for Standards to interface a personal computer to a
stylus type surface roughness measuring instrument.
A commercial Talysurf-3 is interfaced to a computer
through an Analog to Digital converter (AID). The AID
digitizes the profile signal obtained from the measuring
instrument, then the digitized signal is fed to the computer
in order to be analyzed. A potential devider was specially
made to make the analog signal within -the permissible safe
voltage limits for the AID converter. The system has been
developed in order to be able to scan a surface and give a
three dimensional 3D map of the surface on the screen of
the computer used. The pickup of the measuring
instrument traces a profile on the surface giving an X-Z
readings representing one trace. Using a table which is able
to move the workpeice in the horizontal plane i.e. X.Y
direction, enables the system to scan many parallel traces.
from these traces and with the suitable software a three
dimensional solid map of the surface could be obtained