APMP.M.H-S3 Final Report Comparison on Hardness ... - BIPM
APMP.M.H-S3 Final Report Comparison on Hardness ... - BIPM
APMP.M.H-S3 Final Report Comparison on Hardness ... - BIPM
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
Revisi<strong>on</strong>: <str<strong>on</strong>g>Final</str<strong>on</strong>g> <str<strong>on</strong>g>Report</str<strong>on</strong>g><br />
Date: May 25, 2012<br />
Data report forms<br />
<str<strong>on</strong>g>Report</str<strong>on</strong>g> Form 1 (For Rockwell hardness scale B)<br />
Metrology informati<strong>on</strong><br />
Model of hardness primary machine SHT-31<br />
Serial number of hardness primary machine 310039<br />
Manufacturer of hardness primary machine Akashi - Japan<br />
<strong>Hardness</strong> indicati<strong>on</strong> system Laser hologauge<br />
Test force system Lever type<br />
Relative error of preliminary test force +0.01 % (+0.001 kgf)<br />
Relative uncertainty (2) of preliminary test force 0,030 %<br />
Relative error of total test force +0.01 % (+0.0057 kgf)<br />
Relative uncertainty (2) of total test force 0.01%<br />
Uncertainty of depth measuring device 0.2 m<br />
The diameter of ball indenter 1.5875 m ±2m<br />
The calibrati<strong>on</strong> and measurement capability (CMC) 0.40 HRB<br />
Testing c<strong>on</strong>diti<strong>on</strong><br />
Velocity of the indenter when reaching the surface 80-200 m/s<br />
Holding time of preliminary test force 3 s<br />
Test force loading speed 33 s<br />
Total test force durati<strong>on</strong> time 4 s<br />
Time before reading permanent indentati<strong>on</strong> depth 4 s<br />
Envir<strong>on</strong>ment of comparis<strong>on</strong> measurement<br />
Measurement place <strong>Hardness</strong> lab. NIMT<br />
Measurement date 28-23 April 2010<br />
Envir<strong>on</strong>ment (23±1)C ,(50±10)%RH<br />
Deformati<strong>on</strong> of frame verificati<strong>on</strong><br />
Deformati<strong>on</strong> of frame (m)<br />
1 2 3<br />
0.11 0.13 0.11<br />
Page 38 of 77