The dependence of brass hardness measurement system on time

• Autorzy: Petrík J. , Špetuch V.
• Języki publikacji: EN

Abstrakty

EN

Measurement system analysis (MSA) was used for estimation of hardness (HBS) measurement system capability. The time dependence of capability was evaluated. Experimental material Cu-Zn-Al cast alloy was used as shape memory alloy. The average and range method with 2 appraisers, 10 samples and 3 trials (indentations). was used to quantify repeatability (% EV), reproducibility (% AV) and part variation (% PV - variation between samples). The measurement was repeated 5 times in intervals of 7 days. As the values of %GRR are between 89.4% and 63.7% and values of "ndc" between 0.71 and 1.71 the used hardness measurement system is not capable and it depends heavily on the long-term variability.

Słowa kluczowe

EN

time dependence; % GRR method; shape memory alloy; hardness HBS

• Wydawca: Komitet Metrologii i Aparatury Naukowej PAN
• Czasopismo: Metrology and Measurement Systems
• Rocznik: 2007
• Tom: Vol. 14, nr 4
• Strony: 595--602
• Opis fizyczny: Bibliogr. 8 poz., rys., tab., wykr.

Twórcy

autor

Petrík J.

autor

Špetuch V.

• Technical University of Košice, Faculty of Metallurgy, Slovakia,

Bibliografia

• 1. Petrík J., Špeťuch V.: The dependence of hardness measurement system capability on the time. In: Transfer 2005, pp. 429-432. (in Slovak)
• 2. Petrík J., Špeťuch V.: The Dependence of Hardness Measurement System Capability on the Time. Transactions of the Universities of Košice, no. 3, 2005, pp. 27-33.
• 3. Measurement system s analysis (MSA). Reference manual. Third edition. 2003, pp. 102-120.
• 4. Betteley G., et al.: Using statistics in industry. Prentice Hall International. Hemel Hampstead, 1994, pp. 186.
• 5. Petrík J., Palfy P.: Quality of process of measuring microhardness. In: Jakost - Quality 2006. Ostrava, pp. 14. (in Slovak)
• 6. Petrík J., Špeťuch V.: The quality of hardness measurement process. Materials engineering - Materiálové inžinierstvo, vol. 14, no. 1, 2007, pp. 37-41. (in Slovak)
• 7. Tobolski E.: Uncertainty in Hardness testing. (part 2). Advanced materials & processes, vol. 161, no. 5, 2003, pp. 25.
• 8. Methodical guidelines for accreditation. Proficiency testing schemes. MSA 0113-98. Bratislava: Slovenská národná akreditačná služba, 1998. pp. 32-34. (in Slovak)