Estimation of the measurement uncertainty in the anisotropy test |
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| Affiliation: | 1. Federal Institute of Santa Catarina (IFSC)/Instituto Federal de Santa Catarina, Nereu Ramos Avenue, 3450-D Chapecó, Santa Catarina, Brazil;2. Specialized Electric-Electronic Laboratories (LABELO)/Laboratórios Especializados em Eletroeletrônica, Ipiranga Avenue, 6681 – Building 30 – Room 210, Porto Alegre, Rio Grande do Sul, Brazil;3. Federal University of Rio Grande do Sul (UFRGS)/Universidade Federal do Rio Grande do Sul, School of Engineering, Osvaldo Aranha Avenue 99, Rio Grande do Sul, Brazil;1. Departamento de Engenharia de Sistemas Eletrônicos, Escola Politécnica, Universidade de São Paulo, São Paulo, Brazil;2. Centro de Engenharia, Modelagem e Ciências Sociais, Universidade Federal do ABC, Santo André, Brazil;1. Department of Civil Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India;2. Department of Electrical Engineering, Indian Institute of Technology Bombay, Powai, Mumbai 400076, India;1. Department of Computer Science, Università degli Studi di Milano, Via Bramante, 65, 26013 Crema, Italy;2. Department of Physics, Università degli Studi di Milano, Milan, Via Celoria, 16, 20133 Milan, Italy;3. I.N.F.N. Milano, Via Celoria, 16, 20133 Milan, Italy;4. Department of Computer Engineering, Maltepe University, Marmara E?itim Köyü, 34857 Maltepe-Istanbul, Turkey;5. Dipartimento di Elettronica, Informazione e Bioingegneria, Politecnico di Milano, Piazza Leonardo da Vinci, 32, 20133 Milan, Italy;1. TU Berlin – Technische Universität Berlin, Berlin 10623, Germany;2. GFZ – German Research Centre for Geosciences, Potsdam 14473, Germany |
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| Abstract: | The evaluation of the sheet metal drawability in mechanical shaping processes depends on a large number of analysis, among which the anisotropy evaluation. Nowadays, there is no Brazilian test laboratory accredited by the Metrology, Quality and Technology National Institute (INMETRO) to perform this analysis. So, the object of the present work is to establish a procedure for the estimation of the measurement uncertainty in the plastic anisotropy ratio of sheet metals, in accordance to the Guide to the Expression of Uncertainty in Measurement (GUM), aiming at the accreditation of this test in the Physical Metallurgy Laboratory. As results, we present the calculations performed and the uncertainty form proposed, and an analysis of which sources contributed the most for the uncertainty in the execution of a test. Finally, we propose improvement actions aiming at the reduction of the calculated uncertainty and the adequacy of the Measurement System for the desired application. |
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| Keywords: | Measurement uncertainty GUM Anisotropy Plastic strain ratio |
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