Implementación de la norma ISO/IEC 17025:2017 aplicada a ensayos de tracción de la máquina universal de la Universidad Politécnica Salesiana Sede Quito

Abstract

This project has been developed with the objective of implementing a quality management system for the tensile tests carried out by the laboratory of the Salesian Polytechnic University in Quito, to guarantee compliance with national and international standards, thus maintaining traceability in tests performed within the scope of the laboratory. The scope of the laboratory is determined by the calibration range of the universal testing machine, this was calibrated with national standards for tensile measurements by the INEN National Metrology Laboratory up to a range of 15kN. To implement the management system, a quality manual was developed based on the international standard ISO / IEC 17025: 2017; which establishes the guidelines for the competence of the testing and calibration laboratories, which contains 11 procedures and 32 record formats, which allow the staff to act impartially, maintain technical competence, guarantee the traceability of the results and use the system properly. The results obtained through the calibration of the universal tensile testing machine made it possible to determine that there are measurement errors that do not comply with the manufacturing tolerance of the load cell. Therefore, it is concluded that to improve the resulting measurements reported by the laboratory in tensile tests, a metrological adjustment must be made to the measurement equipment.