Abstract
Fatigue testing in kingpins consists in applying cyclic forces to simulate the mechanical loads experienced by this automotive component in practice. In this context, Laboratório de Metalurgia FÃsica (LAMEF) has a quality system implemented as suggested by ISO/IEC 17025 standard, and for the test to be under the management structure, the method must be validated. Method validation is a documented evidence that represents the standardization and indicates its suitability for a certain purpose. Therefore, this work presents the method validation for fatigue tests in kingpins. Thus, selectivity, linearity, sensitivity, range, precision, accuracy, stability and robustness were used as validation criteria. The interpretation of each criterion showed a suitable performance and guaranteed the method validation according the methodology proposed.
Highlights
Product certification has been used to the Market and is an essential requirement of consumers aiming at quality and cost
In Brazil, Laboratório de Metalurgia Física (LAMEF) is accredited to INMETRO, according to the NBR ISO/IEC 17025 [1], to perform fatigue tests in kingpins
This mechanical test is based on NBR NM-ISO 8716 [2] and consists in the application of cyclic forces that simulate the loads experienced by the kingpin
Summary
Product certification has been used to the Market and is an essential requirement of consumers aiming at quality and cost. On February, 2008, the National Institute of Metrology, Standardization and Industrial Quality (INMETRO) Ordinance No 70/2008 was formalized, establishing compulsory certification for kingpins, used on the vehicles carrying dangerous goods and cargoes, and must be carried out by a Product Certification Body (OCP), duly accredited by INMETRO. The main acceptance criteria often considered in a method validation are selectivity, linearity, sensitivity, range of work, precision, accuracy, stability, and robustness [3]. Roiffé et al [4] analysed repeatability, intermediate accuracy, matrix interference, limit of quantification, linearity, carryover and robustness to validate new analytical method for the analysis of catecholamines and its biotransformation products. To [3,13,15,16,17,18], the criteria used were: selectivity, linearity, precision, accuracy, stability, and robustness and all the forces were acquired in laboratory tests
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