COMPARISON OF MICROSCOPIC OBSERVATION TECHNIQUES TO DETERMINE VICKERS INDENTATION DIAGONAL LENGTH |
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| S. Takagi, Y. Tanaka, Y. Seino |
- Abstract:
- In order to investigate the best way to determine the diagonal length of a Vickers indentation, bright-field (BF), dark-field (DF), differential interference contrast (DIC) and confocal scanning microscopy is utilized to observe indentations on various samples. Each of BF, DF and DIC methods has advantage and disadvantage and evaluated values should be considered carefully. 3D feature of indentation evaluated with a confocal microscope gives useful information about it. To eliminate the effect of focusing error, focus stacking technique is quite efficient and expected to reduce the uncertainty of measurement of diagonal length. The roughness of sample surface should be taken into account but not only the amplitude parameter, Ra, but also the wavelength parameter, RSm.
- Keywords:
- Vickers hardness; diagonal length measurement; optical microscopy; focus stacking; confocal scanning microscopy
- Download:
- IMEKO-TC5-2022-049.pdf
- DOI:
- 10.21014/tc5-2022.049
- Event details
- IMEKO TC:
- TC5
- Event name:
- TC5 Conference 2022
- Title:
14th TC5 Conference on the Measurement of Hardness (together with the 24th TC3 Conference on the Measurement of Force, Mass and Torque, the 6th TC16 Conference on Pressure and Vacuum Measurement, and the 5th TC22 Conference on Vibration Measurement)
- Place:
- Cavtat-Dubrovnik, CROATIA
- Time:
- 11 October 2022 - 13 October 2022