Any suggestion for standard test specimen for surface roughness measurement and dimensional accuracy measurement is required.
Thanks in advance
You might take a look at Ohio State University's experimental results on roughness.
Whitehouse, David (2012). Surfaces and their Measurement. Boston: Butterworth-Heinemann. ISBN 978-0080972015.
In article Bauteiloberfläche und Schwingfestigkeit – Untersuchungen zum Einfluss der Randschicht auf die Dauerschwingfestigkeit von Bauteilen aus Stahl
U. Kleemann Dipl. & H. Zenner you will find dimmension of specimen.
@Mintgai Chen : where shall I look for getting those results
@Mirza Haider : We have here a laser optical instrument for measuring the roughness
Thanks you all for your answers
In my case I buy two specimens to control my roughness meter. One made by Taylor Hobson (Ra=6 micrometers), and another by Mitutoyo (Ra=3 micrometers).
My equipment is the typical instrument by contact with a diamand point.
For the types of lines that the two specimens have, this lines were made by milling.
To determine roughness using flat test pieces with dimensions 10mmx10mm at least (100mm2) to be able to carry out 10 successive measurements in length. The results are averaged and determine the mean roughness. If there are large deviations roughness further testing that can reach to 100. The purpose of measurement is to obtain and correct Gaussian law (6G).
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