Foundry Simulation
Mostrando 1-6 de 6 artigos, teses e dissertações.
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1. Predicting Secondary-Dendrite Arm Spacing of the Al-4.5wt%Cu Alloy During Unidirectional Solidification
Mechanical properties and performance of metallic materials depend on their microstructures. In order to develop engineering materials that match prescribed criteria and to enable design with multifunctional materials, it is essential to be able to predict their microstructural patterns, such as size, shape, and spacing of the dendritic structures observed i
Mat. Res.. Publicado em: 24/11/2016
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2. Um sistema simplicado para tranmissão de dados em rede de energia eletrica : concepção do circuito, prototipo e proposta de integração / A simplified system for power line data communication : circuit design, prototype and integration proposal
It was developed in this work a circuit for power line data communication - PLC that enable low speed data transmission in a circuit topology that enable a future integration. The built prototype was elaborated with discrete components and exhibits a compatible operation with a typical PLC circuit. The coupling circuits with the mains wires are extensively d
Publicado em: 2009
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3. Avaliação da influência do cromo e molibdênio na solidificação e formação de rechupes em ferros fundidos cinzentos. / Evaluation of the influence of chromium and molibdenum in the solidification and shrinkage defects in grey cast iron.
Ferros fundidos cinzentos ligados com cromo e molibdênio são utilizados em cabeçotes de motor para se obter alta resistência à tração e à fadiga (com menores seções), maior resistência à temperaturas elevadas e maior estabilidade térmica. No presente trabalho é feita uma avaliação da influência da adição dos elementos de liga cromo e molib
Publicado em: 2008
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4. Mixed-signal analog-digital circuits design on the pre-diffused digital array using trapezoidal association of transistors
The mixed-signal and analog design on a pre-diffused array is a challenging task, given that the digital array is a linear matrix arrangement of minimum-length transistors. To surmount this drawback a specific discipline for designing analog circuits over such array is required. An important novel technique proposed is the use of TAT (Trapezoidal Association
Publicado em: 2007
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5. Project of circuits for generation of voltage reference in receiving/transmitting RF systems. / Projeto de circuitos para geração de tensão de referência em sistemas receptores/transmissores RF.
This work consists in the design of a CMOS Voltage Reference Source with a temperature coefficient inferior to 50 ppm/ºC. This voltage source should be applied in radio frequency receptor/transmitter but can be also applied in any analog system. The technology employed in the design is the CMOS 0.35 µm from the AMS (Austria Micro Systems) with four metal l
Publicado em: 2007
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6. Correlação entre parametros termicos e microestrutura dendritica e sua aplicação na simulação da fundição de ligas de aluminio
This work deals with the development of a method to predict the dendritic microstructure in aluminum alloy foundry process. Firstly, an aluminum alloy used in automotive pari production was chosen to be studied in this work. Such an alloy had an average amount of 9.0% wt. of Si and 2.5% wt. Of Cu. The work was started by making the alloy metallography and th
Publicado em: 1996