Results of a Surface Roughness Comparison between Stylus Instruments and Confocal Microscopes

This article presents the results of an LMM-R-2019 interlaboratory comparison. Such comparisons of different families of measuring instruments are one of the activities conducted among the calibration laboratories to maintain their ISO 17025 accreditation. Given that the study of surface roughness i...

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Bibliographic Details
Published in:Materials 2022-08, Vol.15 (16), p.5495
Main Authors: Mínguez-Martínez, Alberto, Maresca, Piera, Caja, Jesús, Oliva, Jesús de Vicente y
Format: Article
Language:English
Subjects:
Accreditation
Calibration
Comparative analysis
Conformity
International agreements
Laboratories
Manufacturing
Measuring instruments
Microscopes
Optical instruments
Optical measuring instruments
Pseudorandom
Radiation
Styli
Surface roughness
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Summary:This article presents the results of an LMM-R-2019 interlaboratory comparison. Such comparisons of different families of measuring instruments are one of the activities conducted among the calibration laboratories to maintain their ISO 17025 accreditation. Given that the study of surface roughness is becoming increasingly important in the field of dimensional metrology, the comparison focused on determining the Ra parameter on a pseudorandom metallic roughness standard using two types of measuring instruments: physical contact (stylus instruments) and optical (confocal microscopes). Among the aspects studied was whether the roughness measurements obtained using calibrated confocal microscopes could be compared with those using traditional methods since optical instruments obtain measurements more quickly and responsively than do stylus instruments. The results showed that roughness measurements using confocal microscopes are comparable with those from a traditional stylus instrument.
ISSN:1996-1944
1996-1944
DOI:10.3390/ma15165495