High-accuracy roundness measurements at NRC
| Autor: | C Aldous, B J Eves, I D Leroux |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
0209 industrial biotechnology
020901 industrial engineering & automation Applied Mathematics 020208 electrical & electronic engineering 0202 electrical engineering electronic engineering information engineering 02 engineering and technology Geodesy Instrumentation Engineering (miscellaneous) Roundness (object) Mathematics |
| Zdroj: | Measurement Science and Technology. 29:125006 |
| ISSN: | 1361-6501 0957-0233 |
| DOI: | 10.1088/1361-6501/aae6f9 |
| Popis: | An uncertainty budget for measuring the roundness of high-quality parts using the reversal method has been developed. A systematic source of uncertainty due to the non-linear nature of the and operators has been experimentally verified and a simple method to remove the bias developed. The dominant source of uncertainty for the measurement of high-quality parts is the difficulty of realizing the correct measurand when the form of the part varies along the rotation axis. Example uncertainty budgets for both a steel ring and a glass hemisphere are presented. The expanded uncertainty (k = 2) for the out-of-roundness of the hemisphere is 4.0 nm. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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