Autores: Erick da Silva Ferreira Pinto, Wu Bing Shiuan, Ericles William de Jesus Santos, Tiago Costa Dourado, Rodrigo Pereira Barretto da Costa-Félix

Abstract:Conducting reliable measurements with traceability is a basic premise in commercial relations between nations. This role is performed by the national standardization institutes (NMI) and coordinated by the Bureau International des Poids et Mesures (BIPM). The use of Reference Materials (RM) and Certified Reference Materials (CRM) have contributed for decades, mainly to the metal and steel and pharmaceutical industries, providing high-quality measurements and adding value to the products. This research presents the primary standards and guidelines relevant to the definition of RM and CRM for the area of non-destructive testing (NDT) by ultrasound. The generation process of these materials must occur from short and long term stability and homogeneity tests following ISO Guide 35. Following a basic protocol defined for the experiments, the first results generated for the RM and CRM validation process are presented for the first results generated for a production process of a set of 24 carbon steel blocks for property calibration regarding ultrasonic velocity.

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