INTERLABORATORY COMPARISON ON ROCKWELL HARDNESS MEASUREMENT IN THAILAND |
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| Tassanai Sanponpute, Veera Tulasombut, Rugkanawan Kongkavitool, Apichaya Meesaplak |
- Abstract:
- Hardness laboratory of National Institute of Metrology Thailand (NIMT) was a pilot laboratory and responsible for coordinating the interlaboratory comparison in Thailand. The two comparison protocols, comparison on Rockwell scale B hardness measurement and comparison in scale C hardness measurement, were set up for participant to choose according to their application. The artifacts used in these comparisons were hardness reference blocks and machinery part such as cylindrical axles and metal sheets. The measurement result and uncertainty budget were reported to pilot laboratory and are used to compute deviation from reference value and En numbers. Most laboratories had En numbers under 0.5 while few laboratories had En numbers between 0.5 to 1. Only one laboratory, who declared unusual BMC, had En number higher than 2.
- Keywords:
- Rockwell, interlaboratory comparison
- Download:
- IMEKO-TC5-2010-022.pdf
- DOI:
- -
- Event details
- IMEKO TC:
- TC5
- Event name:
- HARDMEKO 2010
- Title:
- 11th HARDMEKO Conference: HARDMEKO 2010 (together with 21st TC3 Conference on Measurement of Force, Mass and Torque and 2nd TC22 Meeting on Vibration Measurement)
- Place:
- Pattaya, THAILAND
- Time:
- 21 November 2010 - 25 November 2010