Diseño y Construcción del Equipo para Ensayos de Inflamabilidad Aplicado a Materiales de Autopartes Según la Norma ISO 3795.

Abstract

This work is about the design and construction of equipment to test flammability applied to materials belonging to auto parts according to ISO 3795 Norm. The objective is to determine the burning rate of materials utilized to make the inside cover in cars.Its application is directed to meet the requirements of the vehicular homologation national plan, especially what has been established as requirements in the national technical norms and regulations for the product certification (vehicle body); they are the following: RTE 041-2010 (School Bus), RTE 043-2010 (inter and intra provincial bus), and NTE 2205 (urban bus). When designingthe equipment, conditions, parameters, requirements and the recommendations prescribed in ISO 3795 NORM were considered as well as the USFMVSS 302 document for testing procedure. These considerations are fundamental to determine the fuel type (GLP), the gas burner (Bunsen burner) which will provide the flame to burn the materials, and the materials used to construct the equipment according to the presented conditions of high temperatures at the moment of testing. Additionally, necessary documentation of before, during and after the test was done. This means test tube records, test procedures, laboratory guide, test report, etc. In order to warrantee safety and reliability of the results, a control panel has been provided. This panel has an electric circuit designed with software Proteus and its programming of PICs was done with the informatics tool MicroCode Studio. These allowed establishing components and instruments to form part of the functioning system and equipment control. Parts such as the solenoid valve, the spark ignition source, the thermometer, the time, etc. Before using this equipment, it is recommended to read the maintenance operator´s manual for its correct use.