Elaboración de un manual de operación y de mantenimiento del tubo de impedancia acústica del laboratorio de materiales de la Facultad de Mecánica Espoch

Abstract

The acoustic impedance tube, as a new equipment in the Materials Laboratory, has no operation and maintenance manual, resulting in inappropriate handling and maintenance, there are no records that contain main parts, characteristics, operation, control, safety and history of failures, therefore, the objective of this research was to develop an operation and maintenance manual of the acoustic impedance tube of the Materials Laboratory of Faculty of Mechanics at ESPOCH. The methodology consisted in obtaining initial information of the main parts of the test module to then evaluate the technical status of each one of them, therefore, a VibraCheck vibration analyzer was employed to determine the natural frequency and to verify that the device is useful and reliable for the tests to be carried out. The equipment were located in a suitable area taking into account the space available in the laboratory, and some safety parameters that the students should take into account were also analyzed. A manual of operation was designed in which the essential steps for the correct operation were detailed, as well as a maintenance manual that ensured the availability and operational reliability of the equipment. A criticality analysis was designed to facilitate decision-making. With this methodology it was possible to elaborate a guide for the use and maintenance of the acoustic impedance tube, in addition, a programming in LabVIEW and Matlab was performed, with parameters that are modified for the use of tests, after that, the analysis of the tests performed to the different materials was carried out. In that context, it is concluded that an operation manual was applied, detailing the steps to follow in a consecutive and precise way, optimizing the processes and avoiding the inappropriate manipulation of the equipment.