Desenvolvimento de testes acelerados de fadiga aplicados a atuadores eletrônicos de turbocompressores

Detalhes bibliográficos
Ano de defesa: 2013
Autor(a) principal: Marques, Vinícius Abrão da Silva
Orientador(a): Não Informado pela instituição
Banca de defesa: Não Informado pela instituição
Tipo de documento: Dissertação
Tipo de acesso: Acesso aberto
Idioma: por
Instituição de defesa: Universidade Federal de Uberlândia
BR
Programa de Pós-graduação em Engenharia Mecânica
Engenharias
UFU
Programa de Pós-Graduação: Não Informado pela instituição
Departamento: Não Informado pela instituição
País: Não Informado pela instituição
Palavras-chave em Português:
Link de acesso: https://repositorio.ufu.br/handle/123456789/14934
https://doi.org/10.14393/ufu.di.2013.216
Resumo: The current market trend implies in products with high quality, reliability, durability, performance and low cost. Therefore, it is necessary to invest in tests which indicate before the component s life. Different vibration tests are involved in the conception phase: development, prequalification, qualification, endurance, certification and homologation. Accelerated vibration tests can provide results in a short time which are representative of real world, avoid over-design and under-design and obtaining identical failure in lab as in field. It is very important to know the vibration components which affect the product and obtain the excitation amplitudes values in each frequency to apply in shaker tests, reproducing the same failures modes due random and sinusoidal vibrations. The objective of this work is develop a procedure to generate a sine-onrandom profile to test electronic actuators of Variable Geometry Turbocharger in accelerated vibration shaker tests. It was used the Taylor Methods and Maximum Response Spectrum/Fatigue Damage Spectrum as parameters to compare the accelerated Power Spectrum Density based on field data with standard procedure defined by ISO 16750-3 (2003) to develop shaker tests to electronics components used in automotive applications. The results show the benefits of this method to compare different types of tests and it was possible to determine the best profile to test components in a shorter time, submitted to both sine and random vibration.