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로크웰 경도 측정 시 각도오차분석 및 측정불확도 산출에 관한 연구 KCI 등재

A Study on Angular Error Analysis and Measurement Uncertainty Calculation in Rockwell Hardness Measurement

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한국기계기술학회지 (Journal of the Korean Society of Mechanical Technology)
한국기계기술학회 (Korean Society of Mechanical Technology)
초록

This study was evaluated based on the items of KS B 6389. The study on the calculation of angular error and measurement uncertainty of HRc hardness measurement using statistical techniques using Rockwell measurement specimens with different hardness values ​​was analyzed, and the results were derived according to the change in the angle of the indenter part of the hardness tester and the specimen. As a result of the experiment, the test statistic P values ​​for angle changes such as 0°, 1°, and 2° were all 0.000 using the HRc 30 and 40 measurement specimens, so it was confirmed through the experiment that a significant difference occurred between them. In addition, the extended uncertainty value was calculated as 0.612 at the 95.45% confidence level, and the fact that the hardness test value came out smaller than the existing test value as the inclination angle increased was verified through experiments.

저자
  • 정현석(한국폴리텍대학 반도체융합캠퍼스) | JungHyunsuk Corresponding author
  • 최지선(한국앱티브커넥션시스템즈(유)) | Ji-Sun Choi