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Concurrent toolpath planning for multi-material layered manufacturingZhu, Wenkai. January 2009 (has links)
Thesis (M. Phil.)--University of Hong Kong, 2009. / Includes bibliographical references. Also available in print.
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Komposite auf der Basis von Polyetheretherketon für den KnochenersatzPohle, Dirk January 2008 (has links)
Zugl.: Erlangen, Nürnberg, Univ., Diss., 2008
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Weld path optimisation for rapid prototyping and wear replacement by robotic gas metal arc weldingSiminski, Michael. January 2003 (has links)
Thesis (Ph.D.)--University of Wollongong, 2003. / Typescript. Includes bibliographical references: leaf 298-316.
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Modeling, analysis and experimentation for building ice parts with supports using rapid freeze prototypingBryant, Frances Denise, January 2008 (has links) (PDF)
Thesis (Ph. D.)--Missouri University of Science and Technology, 2008. / Vita. The entire thesis text is included in file. Title from title screen of thesis/dissertation PDF file (viewed May 28, 2009) Includes bibliographical references (p. 91-93).
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Densification and properties evolution of stainless steel alloys fabricated by three-dimensional printingKim, Yongha, January 2009 (has links) (PDF)
Thesis (M.S. in mechanical engineering)--Washington State University, August 2009. / Title from PDF title page (viewed on Sept. 16, 2009). "School of Engineering and Computer Science." Includes bibliographical references (p. 77-83).
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Exploring poly(ethylene glycol) as a suitable material for peripheral nerve regeneration scaffolds manufactured by stereolithographyZuverza-Mena, Nubia, January 2009 (has links)
Thesis (M.S.)--University of Texas at El Paso, 2009. / Title from title screen. Vita. CD-ROM. Includes bibliographical references. Also available online.
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Ultrasonic droplet generation jetting technology for additive manufacturing an initial investigation /Margolin, Lauren. January 2007 (has links)
Thesis (M. S.)--Mechanical Engineering, Georgia Institute of Technology, 2007. / Rosen, David, Committee Chair ; O'Connor, Jerry, Committee Member ; Fedorov, Andrei, Committee Member.
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A versatile DSP, FPGA structure optimized for rapid prototyping and digital real time simulation of power electronic and electrical drive systemsKaripidis, Claus-Ulrich. Unknown Date (has links) (PDF)
Techn. Hochsch., Diss., 2001--Aachen.
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Capabilities and economical evaluation of rapid prototyping processes for sheet metal parts /Lasunon, On-Uma. January 2006 (has links)
Thesis (Ph. D.)--University of Rhode Island, 2006. / Includes bibliographical references (leaves 213-220).
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Estudo comparativo de protocolos tomográficos na aquisição das imagens para confecção de modelos de prototipagem / Comparative study of the tomographic protocols for making model prototypeLima Moreno, Jorge Javier de January 2013 (has links)
A especialidade de Prótese Buco-Maxilo-Facial é responsável por reconstruções complexas da face e do crânio. Entretanto, com a utilização de impressões convencionais, é difícil se alcançar uma adequada adaptação clínica para a reabilitação do paciente. Assim, algumas vêzes, faz-se necessária a obtenção de modelos tridimensionais (3D) que reproduzam a realidade clínica. O objetivo deste estudo é comparar os protótipos obtidos com diferentes protocolos de aquisição de imagem provenientes de distintos aparelhos de tomografia computadorizada com relação à rugosidade superficial, área reconstruída e dose de exposição gerada, procurando estabelecer o mais adequado para a confecção de protótipos de crânio. Para isso, nove protótipos de um fragmento craniofacial seco foram confeccionados. A comparação entre os protótipos quanto à lisura superficial e à área reconstruída foi realizada por meio da Análise de Variância (ANOVA). Nos casos em que a avaliação indicou diferença significativa, foi aplicado como complemento o Teste de Comparações Múltiplas de Tukey. O nível de significância adotado foi de 5%. Em relação à análise de rugosidade as diferenças encontradas não demonstraram correlação com a área reconstruída. Já em relação aos diferentes protocolos, diferenças significativas foram observadas nos protótipos com respeito à área reconstruída e dose de radiação gerada. Pode-se concluir, frente aos resultados encontrados, que as imagens geradas pelos tomógrafos de feixe cônico e feixe em leque, utilizando os protocolos com as resoluções máximas estudadas, estão indicadas para a confecção de protótipos. Contudo, o que deve nortear a seleção do melhor protocolo tomográfico deve ser o propósito da indicação clínica correlacionado com o princípio ALARA (As Low As Reasonably Achievable). / Oral-maxillo-facial prosthodontics is the study of complex face and skull reconstructions. In view of the insufficient degree of adjustment of conventional impression to enable proper clinical rehabilitation, among other reasons, practitioners increasingly resort to 3D models that accurately reproduce the clinical reality. The aim of this study is to determine the optimal selection of imaging device and protocol for use in skull prototyping. The surface roughness and reconstructed area of nine prototypes obtained from a dried craniofacial specimen using different image acquisition protocols and CT devices were measured, in addition to measurements of the radiation dose potentially received by the patient. ANOVA of the surface roughness, reconstructed area and radiation dose data enabled statistical comparisons among the prototypes. Where significant differences were found, Tukey’s multiple-comparison test was conducted, using a significance level of 5%. No correlation was found between surface roughness and reconstructed area. However, significant differences in reconstructed area and radiation dose were found among the different protocols. These results support the use of images generated by CBCT or fan beam CT for the construction of prototypes, using the protocols with the highest resolution. Nevertheless, the selection of the most appropriate TC protocol should be based on the particular clinical indication along with the ALARA (as low as reasonably achievable) principle.
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