| Autor: |
Zhichao Wu, Furong Lei, Linan Wang, Yu Fu |
| Jazyk: |
angličtina |
| Rok vydání: |
2024 |
| Předmět: |
|
| Zdroj: |
Heliyon, Vol 10, Iss 4, Pp e26123- (2024) |
| Druh dokumentu: |
article |
| ISSN: |
2405-8440 |
| DOI: |
10.1016/j.heliyon.2024.e26123 |
| Popis: |
To meet the demand for the track's geometric parameter detection equipment for train speed and high-speed aerodynamics tests, a zero-calibration gauge device is designed with the centering limit, height adjustment and horizontal display function in this paper. The bending situation of the zero-calibration gauge is analyzed and the processing technology is studied, which ensures the rationality and realizability of the design of zero-calibration gauge. Then the gauge zero value and the parallelism of the working surface of zero-calibration gauge have been experimentally tested. The experimental results show that the parameter of gauge zero value is 1434.829 mm with a standard deviation of 1.4 μm. The parallelism of the two upper working surfaces is 1.1 μm, and the parallelism of the two inner working surfaces is 4 μm. Finally, the uncertainty evaluation of zero-calibration gauge is completed. The measurement uncertainty of gauge zero value is 12 μm and the measurement uncertainty of height difference is 6 μm. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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