Detalhes do Artigo
[299358] Evaluation of elastic recovery of metallic materials during determination of Rockwell hardness
Autores: Marcelo Melo da Costa
Resumo: This paper presents the improvements in measurement uncertainty in calibration of electric current sources obtained by replacing the direct measurement method, using a precision digital multimeter, by an indirect method that uses precision shunts. An analysis of the sources of uncertainty that must be considered in this indirect method is also carried out. Finally, two examples of indirect calibration of a precision current source using shunts as a standard are shown.