Comparison of Experimental and Theoretical Indentation Moduli of Anisotropic Single Crystals |
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| Yukimi Tanaka, Yutaka Seino, Koichiro Hattori |
- Abstract:
- Nanoindentation is a useful method for measuring elastic modulus. However, the elastic modulus of anisotropic single crystal measured by nanoindentation is often different from theoretical value calculated by elastic constants. Hence, we investigated the cause of the problem above by measuring indentation moduli of 4H-SiC, sapphire and quartz with a Berkovich and a spherical indenter. Consequently, the experimental elastic moduli were 5-15 percent higher than the theoretical value regardless of indenter shape and calculation method. The difference between theoretical and experimental modulus suggests to be not concerned with underestimation of contact area due to plastic deformation such as pile-up.
- Keywords:
- nanoindentation, elastic modulus, SiC, sapphire, quartz
- Download:
- IMEKO-TC5-2017-009.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC5
- Event name:
- TC5 Conference 2017 - Measurement facing new challenges!
- Title:
13th Conference on the Measurement of Hardness (together with 23rd TC3 Conference on the Measurement of Force, Mass and Torque and 4th TC22 Conference on Vibration Measurement)
- Place:
- Helsinki, FINLAND
- Time:
- 30 May 2017 - 01 June 2017