VIBRATION EFFECT ON VICKERS HARDNESS MEASUREMENT
Abstract
The effect of environmental vibration on Vickers hardness machine is reported in this paper. Test force 9.807 N (HV1) and 98.07 N (HV10), representing low-force hardness test and normal hardness test, were selected for this experiment. Two machines with different loading mechanism made indentation under influence of single sinusoidal vibration with frequency ranging from 10 Hz to 100 Hz and amplitude ranging from 0.002 m/s² to 0.04 m/s². Indentations were captured by CCD camera and diagonal lengths were measured automatically by software. Response to vibration for each loading mechanism, hardness level, and test force level is discussed in this paper. This experiment shows that the relative errors are higher than maximum permissible error in ISO 6507-2 when vibration amplitude higher than 0.005 m/s² or 0.0005 g<sub>n</sub>. Result from this paper can be used as a guideline to revise maximum allowable vibration acceleration and test force scale to which the limit should be applied.
Event details
- Event
- HARDMEKO 2010
- Technical Committee
- TC5
- Place
- Pattaya, THAILAND
- Time
- 21 November 2010 - 25 November 2010
- Website
- http://imeko2010.nimt.or.th/