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Master's Dissertation
DOI
10.11606/D.3.2008.tde-10112008-110146
Document
Author
Full name
Luciano Valdomiro dos Santos
E-mail
Institute/School/College
Knowledge Area
Date of Defense
Published
São Paulo, 2008
Supervisor
Committee
Gonçalves, Edison (President)
Andrade, Arnaldo Homobono Paes de
Ramos Júnior, Roberto
Title in Portuguese
Análise de falha por fadiga em eixo de motores para sistemas de arrefecimento.
Keywords in Portuguese
Eixos
Fadiga dos materiais
Ventiladores
Vibrações (ensaios)
Abstract in Portuguese
Este trabalho analisa as possíveis causas de quebras de eixos de motores para sistemas de arrefecimento (eletro ventiladores) devido à fadiga. Para isso, define o fenômeno de fadiga e modos de como evitá-lo. Introduz o conceito de vibrações lineares, apresenta os tipos de ensaios de vibração, mostra as alterações do comportamento mecânico do material de um eixo em função do processo de fabricação empregado em sua manufatura e de seu projeto. Define o que é um sistema de arrefecimento e, por último, em um estudo de caso, faz a análise completa do eixo de um determinado eletro ventilador comercial demonstrando situações onde ocorreram quebras por fadiga.
Title in English
Analysis of failure by fatigue in cooling systems fan shaft.
Keywords in English
Fan
Fatigue
Shaft
Vibration
Abstract in English
This work has as objetive to analyze fracture possible reasons of a cooling systems fan shaft. For this, it defines fatigue and how to avoid it. It introduces the concept of linear vibration, it presents the types of vibration tests, it shows changes in the mechanical behavior of the shaft material depending on the manufacturing process and design, it defines which is a system of cooling. Finally, in a case study, it analyzes the shaft fatigue fracture of a particular commercial electric fan.
 
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Publishing Date
2008-12-12
 
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