Ingeniería Mecánica

Permanent URI for this collectionhttp://repositorio.uta.edu.ec/handle/123456789/900

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Subject: search.filters.subject.MATERIALES TEXTILES

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    Implementación de los requisitos técnicos establecidos por la norma técnica ecuatoriana NTE INEN-ISO-IEC 17025- 2018 para ensayos de inflamabilidad en materiales textiles de acuerdo con la norma ASTM d6413 para los Laboratorios de la Carrera de Mecánica
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2023-09) Yunda Buñay, Fernando Efraín; Castro Miniguano, Christian Byron
    This technical project presents the need for the implementation of the technical requirements established in the Ecuadorian Technical Standard NTE INEN-ISO/IEC 17025-2018 because the Mechanical Research Laboratory for Vertical Flammability Tests on Textile Materials requires the documentation established in this standard to establish itself as a more reliable laboratory. For the preparation of documents, records and instructions, a thorough study of the NTE INEN-ISO/IEC 17025-2018 Standard was carried out, complying with the requirements established therein. In addition, vertical flammability tests were developed for 5 textile materials (Nomex, Antifluids, Denim, Die-cut Polyester and Cotton) in accordance with the parameters established in the ASTM D6413 Standard, where vertical flame resistance was measured by evaluating post-flame and postincandescence times. One of the main objectives of the project is the validation of the measurement method, which was carried out by means of the data obtained from the vertical flammability tests and the use of specialized software, obtaining a result of less than 30 percent, considered acceptable according to the criteria established by the AIAG. At the end of the project, both the documentation and the results of the method validation will be delivered to the Mechanical Research Laboratory LIM - UTA, where they will be used for the benefit of the Technical University of Ambato.
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    Automatización de un banco de pruebas para ensayos de inflamabilidad vertical de materiales textiles utilizados en el interior de las carrocerías
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2019) Saquinga Guachamboza, Edisson Daniel; Castro Miniguano, Christian Byron
    The present technical titration project was based on the need to perform vertical flammability tests, to which it is necessary to implement an automated system that allows to adequately controlling the parameters specified in the corresponding standard. This will provide facilities to body manufacturers in the country, as the Ecuadorian technical regulation establishes a requirement for body manufacturers to standardize their units, also considering that the largest percentage of body manufacturers are located in zone three, to which we belong. For the execution of the project began with the revision of ASTM D 6413, which establishes the parameters of construction and operation of the vertical flammability test chamber, which establishes the parameters to control to select the necessary components for the automation of the vertical flammability testing machine. Selected components are proceeded with the assembly of the same and the design of the software that will allow the control of the machine from a computer, in addition to allowing the recording of data of the test performed. To perform the functional tests, five materials used inside the bodies were selected, with which they are sized according to the specifications of the standard used to proceed with the execution of the vertical flammability tests. In this test, the sample is subjected to a flame source of 38 mm in height for a period of 12 seconds, after which the performance data of each of the tested samples is observed and recorded to determine the required flammability index by the Ecuadorian technical regulation, in addition to calculating the carbonization index and post-glare time of each material tested.
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    Análisis de la velocidad de combustión y su incidencia en los materiales utilizados en el interior de carrocerías para vehículos
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica, Carrera de Ingeniería Mecánica, 2019) Villena Portero, José Luis; Castro Miniguano, Christian Byron
    In the present experimental work the flammability index of some of the materials in the construction of bodies is obtained, the process to carry out these tests is found in the ISO 3795 standard, the inflammability index that the materials in the construction in the bodies have a good behavior in front of the fire said materials should help to repel the fire. The ISO 3795 standard establishes the following principles: Composite materials: Interior roof lining (Fiberglass + polyester resin) and Interior side lining (Fiberglass + polyester resin); Textile materials Pranna flexible polyester (seat lining) and Textile based on vinyl (floor lining) and Wood Triplex marine (body floors of mass transport vehicles) The allowed flammability indices are: 100 mm / min and 250 mm / min respectively. The INEN 1668 and 1323 norms indicate what the flammability index is allowed in the construction materials of bodywork interiors. There is no need to comply with the provisions of the regulations.
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    Análisis del material compuesto de fibra de vidrio con matriz polimérica utilizado en la fabricación del interior de carrocerías metalmecánicas para determinar sus propiedades mecánicas
    (Universidad Técnica de Ambato. Facultad de Ingeniería Civil y Mecánica. Carrera de Ingeniería Mecánica, 2017) Castro Chico, Daniel Federico; Castro Miniguano, Christian Byron
    The present study was based on the analysis of composite materials (roof and sides) and textile materials (seat covering and floor) used in the manufacture inside bus body to determine their mechanical properties, because the bus body each time must comply with more requirements for certification of its models, which makes it necessary to test and value the materials used in the construction of bus body, to ensure that materials are safe. For this purpose, the documentary and bibliographic research was carried out in order to establish the characteristics of the materials mentioned. The test specimens were then dimensioned according to the following standards: for composite materials (traction - ASTM D3039- 00, flexion - ASTM D7264-07 and impact - ASTM D5628-01) and textiles (traction - ASTM D5035-03). From the results of the tests could be determined mechanical properties that composite material have at tensile, flexural and impact and textile materials at tensile.