Procedure to Approximately Estimate the Uncertainty of Material Ratio Parameters due to Inhomogeneity of Surface Roughness
| Autor: | Peter Thomsen-Schmidt, Sebastian Rief, Jonathan Hüser, Jörg Seewig, Dorothee Hüser |
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| Jazyk: | angličtina |
| Rok vydání: | 2016 |
| Předmět: |
Reproducibility
Applied Mathematics Homogeneity (statistics) Autocorrelation FOS: Physical sciences Probability and statistics 02 engineering and technology Repeatability Surface finish 01 natural sciences 010309 optics 020303 mechanical engineering & transports 0203 mechanical engineering Physics - Data Analysis Statistics and Probability 0103 physical sciences Surface roughness Statistical physics Instrumentation Engineering (miscellaneous) Amplitude distribution Data Analysis Statistics and Probability (physics.data-an) Mathematics |
| Popis: | Roughness parameters that characterize contacting surfaces with regard to friction and wear are commonly stated without uncertainties, or with an uncertainty only taking into account a very limited amount of aspects such as repeatability of reproducibility (homogeneity) of the specimen. This makes it difficult to discriminate between different values of single roughness parameters. Therefore uncertainty assessment methods are required that take all relevant aspects into account. In the literature this is scarcely performed and examples specific for parameters used in friction and wear are not yet given. We propose a procedure to derive the uncertainty from a single profile employing a statistical method that is based on the statistical moments of the amplitude distribution and the autocorrelation length of the profile. To show the possibilities and the limitations of this method we compare the uncertainty derived from a single profile with that derived from a high statistics experiment. submitted to Meas. Sci. Technol., 12 figures |
| Databáze: | OpenAIRE |
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