Fabrico, Caracterização Mecânica e Optimização Estatística
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Este projeto centra-se no fabrico e na carateriza��o mec�nica de comp�sitos de matriz met�lica de alum�nio 7075 refor�ados com cobre, carboneto de sil�cio e cinzas volantes, utilizando a t�cnica de fundi��o por agita��o. O alum�nio 7075 � selecionado como material de base devido � sua elevada rela��o resist�ncia/peso e boas propriedades mec�nicas, enquanto o cobre, o carboneto de sil�cio e as cinzas volantes s�o utilizados como refor�os para melhorar a resist�ncia, a dureza e a resist�ncia ao desgaste. Os comp�sitos s�o fabricados variando as combina��es de refor�o e fundidos em amostras de placas planas. Ap�s a fundi��o, � efectuada a maquina��o para obter amostras de ensaio normalizadas. As propriedades mec�nicas, como a resist�ncia � tra��o e a dureza, s�o avaliadas. A conce��o de experi�ncias utilizando o m�todo Taguchi � aplicada para otimizar os par�metros do processo e a an�lise de vari�ncia (ANOVA) � utilizada para identificar os factores significativos que afectam as propriedades mec�nicas. Os resultados demonstram que a adi��o de refor�os melhora significativamente o desempenho mec�nico dos comp�sitos de alum�nio 7075, tornando-os adequados para aplica��es estruturais leves e autom�veis.
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Rich Dad Poor Dad: What the Rich Teach Their Kids about Money That the Poor and Middle Class Do Not!
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