EUROMET.L-S11 comparison on surface texture

    Project Details


    The measurement of roughness of technical surfaces is important in research and for industry. There are a lot of 2D roughness parameters that are defined and standardized by ISO. Calibration standards can be used to calibrate the instruments and ensure traceability to the SI unit of length. Most of those used are traced back to SI by national metrology institutes (NMi), which should participate in international comparison to proof the validation of measurement results.
    Sixteen NMi from the EUROMET region carried out measurements on standards between May 2001 and March 2003. The set of standards used complied with ISO 5436-1 and consisted of one depth-setting standard of type A, three calibration standards of type C, three standards of type D1 and one standard of type D2. The participants aimed to measure 50 surface roughness parameters. These included the most interesting parameters in the field of surface texture, i.e. Pt, D, Ra, Rz, Rmax, RSm and Rk. Additionally, for the first time, a comparison using software gauges of type F1 that complied with ISO 5436-2 was made, taking into consideration the fact that they have an important effect on the results obtained.
    A considerable number of the over 600 measurement results did not fulfil the En
    Effective start/end date01/05/200101/05/2004