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Estimation of Measurement Uncertainty in Evaluation of Tensile Properties

인장 물성 측정 불확도 평가

  • Huh, Y.H. (Div. of Industrial Metrology, Standard. Korea Standard Research Institute of Standards and Science) ;
  • Lee, H.M. (Div. of Industrial Metrology, Standard. Korea Standard Research Institute of Standards and Science) ;
  • Kim, D.J. (Div. of Industrial Metrology, Standard. Korea Standard Research Institute of Standards and Science) ;
  • Park, J.S. (Div. of Industrial Metrology, Standard. Korea Standard Research Institute of Standards and Science)
  • 허용학 (한국표준과학연구원 산업측정표준본부) ;
  • 이해무 (한국표준과학연구원 산업측정표준본부) ;
  • 김동진 (한국표준과학연구원 산업측정표준본부) ;
  • 박종서 (한국표준과학연구원 산업측정표준본부)
  • Published : 2010.01.01

Abstract

Estimation of tensile properties measurement uncertainty of material was carried out. Sources of uncertainty affecting the measurement of tensile properties were classified and analyzed. The models for uncertainty evaluation of measurands to be determined from tensile test, such as elastic modulus, yield strength and tensile strength, were suggested and derived from the mathematical relations, corresponding to the respective measurands, and the measuring quantities by calculating each sensitivity coefficient of the quantities. Based on these models, the uncertainty of the tensile properties was evaluated from the experimental data of SUS316LN determined according to ISO 6892.

Keywords

Tensile Properties;Measurement Uncertainty;Sensitivity Coefficient

References

  1. Kandil, F. A., 1995 "Measurement Good Practice Guide No. 1" NPL, ISSN 1368-6550, MMS 001:1995
  2. Kandil, F. A., 2003, "Verification of Alignment of Uniaxial Test Systems", VAMAS Report No. 42, ISSN 1016-2186, NPL
  3. ISO/TC164/SC5/WG11 WD "Alignment of Fatigue Testing Machines."
  4. ASTM E8M, Standard Test Methods for Tension Testing of Metallic Materials [Metric]
  5. ISO 6892:1998 Metallic materials -- Tensile testing at ambient temperature
  6. BIPM/IEC/IFCC/ISO/IUPAC/IUPAP/OIML, Guide to the Expression of Uncertainty in Measurement, 1993
  7. Silva, L.R.O., 2004, "Evaluation of the Uncertainty of Measurement Properties on the Tensile Testing," Simposio de Metrologíia 2004 pp. 1-5

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