Surface roughness and wavyness transform 1

[dgallup]

I have an excel file with surface height measurements taken with a laser gauge. There are ~17000 measurements taken at .5 micron spacing. I want to calculate various surface finish parameters from this data. Does anyone know of an add in package of excel functions give outputs of Ra, Rmax, waviness, etc?

Basically, I want to do all math functions on this data that a surface texture instrument does.

 

[pmover]

look at the statistical functions within excel. the online excel help system will define each function.

hope this helps.
-pmover

 

[dgallup]

You have to do a lot more than just statistics. You need to level the trace, high pass filter it, break it into segments, etc. Somebody must have done all this already and have a nice little add in.

 

[MintJulep]

Doesn't the maker of your laser gauge offer an analysis and reporting tool?

 

[dgallup]

It's not our gauge, I just have an excel file.

 

[IRstuff]

The odds are low that you'll find what you need. Since most systems come with the calculation software, there's wouldn't seem to be much demand for the software without the instrument.

People that might have something probably consider it somewhat proprietary.

TTFN

FAQ731-376

 

[IRstuff]

ASME B46.1-2002 is the most recent standard for the measurement and calculation.

There's also:

http://www.veeco.com/pdfs/appnotes/an525 _dektak_surface_97.pdf

http://www.ambiostech.com/roughness_measurement_software.html

http://www.chapinst.com/ApplicationNotes/parameter.pdf

You can apparently download a 30-day trial for this package:

http://www.truegage.com/truesurf.html

You might be able to use the NIST virtual calibration site to see what their algorithm says:

http://syseng.nist.gov/3DVSC/jsp/FileOpen3D.jsp

TTFN

FAQ731-376

 

[dgallup]

The TrueGage software did the trick. Thanks.