EFFECTS OF SOME INFLUENCE PARAMETERS ON THE CALIBRATION METHOD FOR IRHD ELASTOMER HARDNESS TESTERS |
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| K. Herrmann, A.Stibler, P. Strobel |
- Abstract:
- The method for hardness measurement expressed in International Rubber Hardness Degree - IRHD - of rubber and plastics is described in the standard ISO 48. Rising requirements to the accuracy of hardness measurements have led to the result that verification/calibration methods for the testers acknowledged by a standard are needed. Results of these investigations will be used as a basis for the establishment of the relevant international standard which is in preparation. Some experiments for IRHD measurement by "Low-hardness test" - method L and "Microtest" - method M are presented in this paper. Practical measurements with different indenters and variation of other measurement conditions were carried out. For the obtained results regression evaluations were applied to determine the sensitivity coefficients for the influence quantities. Finally, the effects of all influence quantities on the uncertainty of hardness testers and on the calibration uncertainty were calculated and summarized.
- Keywords:
- Hardness, rubber, IRHD, uncertainty
- Download:
- IMEKO-WC-2000-TC5-P168.pdf
- DOI:
- -
- Event details
- Event name:
- XVI IMEKO World Congress
- Title:
Measurement - Supports Science - Improves Technology - Protects Environment ... and Provides Employment - Now and in the Future
- Place:
- Vienna, AUSTRIA
- Time:
- 25 September 2000 - 28 September 2000