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‣ Development of mechanical engineering curricula at the University of Minho

Teixeira, J. C. F.; Silva, Jaime F. da; Flores, Paulo
Fonte: Taylor & Francis Publicador: Taylor & Francis
Tipo: Artigo de Revista Científica
Publicado em //2007 Português
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The implementation of the Bologna protocol in the European Union has set new goals for the whole higher education system as: (a) a quality assessment for university courses; (b) a framework for the exchange of students and academics; and (c) an opportunity for changing the teaching/learning procedures and methodologies. Within the context, the mechanical engineering curricula at the University of Minho have been comprehensively formulated in order to meet these and future challenges and expectations. The whole process has been based upon various cornerstones: the legal framework for the higher education system; the introduction of new learning methodologies and an accurate survey and understanding of the existing strong and week points of the previous experience. For this purpose, a comprehensive evaluation has been carried out with former students and a detailed map has been formulated regarding their professional careers and experiences. Furthermore, a discussion has been carried out in order to define the mission of the graduate in mechanical engineering. In brief, such mission may be referred by his ability to participate in the wealth creation through technology based innovation. Within this context, the curriculum has been structured in order to meet such goals. In addition to strong foundations in physics and mathematics...

‣ Micromechanics, macromechanics and constitutive modeling of the elasto-viscoplastic deformation of rubber-toughened glassy polymers

Danielsson, Mats, 1973-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 258 p.; 10651387 bytes; 10650238 bytes; application/pdf; application/pdf
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Glassy polymers, such as polystyrene (PS), poly(methyl methacrylate) (PMMA) and polycarbonate (PC), are common engineering polymers that have found uses in consumer products ranging from portable computers and optical lenses, to automotive components and appliance housings. PMMA and PS are typically considered to be brittle polymers, since they fail in a brittle manner under low triaxiality conditions, such as under uniaxial tension. Polycarbonate is considered to be a more ductile polymer than PMMA and PS, since it will deform plastically under uniaxial tension. However, PC does exhibit brittle behavior under certain loading conditions, such as low temperatures, high strain rates, or highly (tensile) triaxial stress states. A technique used for reducing the brittleness (increasing the fracture toughness) of glassy polymers is rubber-toughening. The technology of rubber-toughening, which involves blending a small volume fraction (5-20%) of rubber particles with the homopolymer, has been used commercially since the 1940s, and has been of major importance to the plastics industry. The technology of rubber-toughening is qualitatively well understood, but quantitative tools to study the material response are still at an early stage of development. The purpose of this thesis is to develop numerical tools to investigate the mechanical behavior of rubber-toughened glassy polymers...

‣ A novel osteochondral composite consisting of a self-assembling peptide hydrogel and 3D printed polycaprolactone scaffold : potential for articular cartilage repair

Saatchi, Sanaz, 1980-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 135 p.; 8138435 bytes; 8138238 bytes; application/pdf; application/pdf
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Degenerative diseases, such as osteoarthritis, and traumatic injuries are both prominent causes of cartilage defects. Due to its avascular nature, adult human cartilage displays limited capacity for regeneration. Current surgical treatments to induce a spontaneous repair response rely on access to the subchondral bone region. These procedures result in fibrocartilage generation, as opposed to hyaline cartilage, that is variable in structure, composition, and durability. Furthermore, the success rates of these surgeries are also variable. Deficiencies in these cartilage repair methods motivate investigation into a tissue engineering means of repairing or regenerating cartilage. Various composites designed to emulate a cartilage and bone interface are under investigation. The aim of this study was to conceive a means of integrating a chondrocyte-seeded peptide hydrogel with an interconnected porous 3D printed polycaprolactone (PCL) scaffold to create a novel osteochondral construct. The self-assembling peptide hydrogel has been shown to provide an environment that maintains chondrocyte phenotype and viability. Furthermore, the 3D scaffold fosters extracellular matrix production and chondrocyte division. PCL is a bioresorbable and biocompatible polymer scaffold...

‣ Automatic welding control using a state variable model

Moody, William Vincent
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 73 [i.e. 74] leaves; 3583025 bytes; 3582785 bytes; application/pdf; application/pdf
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by William Vincent Moody.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1979.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Bibliography: leaves 70-73.

‣ Fine particulate filled polymeric material and the investigation of its friction and wear properties

Su, Kwai-Yung Benjamin
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 260 leaves; 21655508 bytes; 21655264 bytes; application/pdf; application/pdf
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by Kwai-Yung Benjamin Su.; Thesis (Sc.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1980.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Vita.; Includes bibliographical references.

‣ Erosion of metal pipe by solid particles entrained in water

Blanchard, Doreen Joan
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 97 leaves; 5065375 bytes; 5065132 bytes; application/pdf; application/pdf
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by Doreen Joan Blanchard.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1981.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Includes bibliographical references.

‣ Tool wear in titanium machining

Hartung, Paul Dudley
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 121 leaves; 7862046 bytes; 7861807 bytes; application/pdf; application/pdf
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by Paul Dudley Hartung.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1981.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Includes bibliographical references.

‣ Surface traction and crack propagation in delamination wear

Sin, Hyo-Chol
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 183 leaves; 7902234 bytes; 7901988 bytes; application/pdf; application/pdf
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by Hyo-Chol Sin.; Thesis (Ph.D.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1982.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Vita.; Includes bibliographical references.

‣ Wear of high speed, high current density slip ring materials at elevated temperatures

Stephenson, David Alan
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 48 leaves; 2777992 bytes; 2777750 bytes; application/pdf; application/pdf
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by David Alan Stephenson.; Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1981.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Includes bibliographical references.

‣ Welding of high strength and stainless steels : a study on weld metal strength and stress relieving

Agapakis, John
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 2 v. (325 leaves); 16555405 bytes; 16555162 bytes; application/pdf; application/pdf
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by John Emmanuel Agapakis.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1982.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING; Includes bibliographical references.

‣ Multivariable control of an underwater vehicle c by Logan George Milliken.

Milliken, Logan George
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 151 leaves; 5609578 bytes; 5609334 bytes; application/pdf; application/pdf
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Thesis (Ocean E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1984.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Bibliography: leaves 150-151.

‣ Real time sensing and control of out-of-plane distortion due to line heating by laser

Johnson, Robert Charles
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 109 leaves; 5196985 bytes; 5196743 bytes; application/pdf; application/pdf
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by Robert Charles Johnson.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1984.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Includes bibliographical references.

‣ Thermomechanical forming of steel plates using laser line heat

McCarthy, Robert W
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 162 leaves; 12451064 bytes; 12450821 bytes; application/pdf; application/pdf
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by Robert W. McCarthy III.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1985.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Bibliography: leaves 107-108.

‣ Multivariable control system design for a submarine using active roll control

Martin, Richard James
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 147 leaves; 6545027 bytes; 6544783 bytes; application/pdf; application/pdf
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by Richard James Martin.; Thesis (Ocean E.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1985.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Includes bibliographical references.

‣ Design of a microreactor for studying the effect of shear stress on angiogenesis in self-assembling peptide matrix

Blundo, Jennifer T. (Jennifer Tryggvi), 1980-
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 152 p.; 7077627 bytes; 7097405 bytes; application/pdf; application/pdf
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Understanding blood vessel formation has become a principal, yet challenging, objective of bioengineering over the last decade. Unraveling the complex mechanisms of angiogenesis could lead to the development of pro or anti-angiogenic treatments for diseases like heart disease and cancer, as well as to the development of viable scaffolds for tissue engineering and biosensors. In pursuit of an optimal in vitro model to study angiogenesis, the aim of this thesis is to design and fabricate a microscale bioreactor to study the effect of shear stress on angiogenesis using a microfabricated substrate, a self-assembling peptide gel, and bovine aortic endothelial cells. A theoretical model was developed to approximate the permeability of the peptide gel and to quantify the average shear stress on an endothelial cell seeded in a 3D matrix of the peptide gel. Experimental results in a macroscale system demonstrate endothelial cell lumen formation and elongation in the direction of interstitial flow in response to physiological levels of shear stress [approximately] 10 dynes/cm², as well as increased cell viability; negligible shear control samples demonstrate no lumen formations and lower cell density. In order to gain more insight on the complex mechanisms of angiogenesis...

‣ Sailing vessel dynamics : investigations into aero-hydrodynamic coupling

Skinner, Graham Taber
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 134 [i.e. 135] leaves; 5747855 bytes; 5747668 bytes; application/pdf; application/pdf
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by Graham Taber Skinner.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1982.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING; Includes bibliographical references.

‣ Calculation of the second order mean force on a ship in oblique seas.

Erb, Paul Ross
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 181 leaves
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Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (M.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1977.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Bibliography: leaves 114-116.

‣ Numerical investigation of the flow-body interaction of thin flexible foils and ambient flow

Connell, Benjamin S. H
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 274 p.
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Flow-induced flapping of flexible thin bodies is oft observed in our day-to-day lives in phenomena such as flag flapping, and is important in a host of engineering applications. Despite its prevalence, however, this fundamental problem of fluid-structure interaction is not very well understood. Use of flexible control surfaces in ocean vehicles holds promise for achieving the efficiencies and maneuverability of waterborne animals, but requires an understanding of the natural responses of flexible foils and the associated physics. Likewise, industrial applications such as the handling of flexible textiles and paper benefit from improved understanding of the relationship between the system parameters and the anticipated response of the body. The present work furthers the understanding of the passive flapping problem through the development and application of a nonlinear computational simulation capability. Examining the flapping problem over a wide range of system parameters and responses indicates the influences and trends of the system behavior, and allows investigation of relevant physical mechanisms in the fluid-structure interaction.; (cont.) To pursue this study, the fluid-structure direct simulation (FSDS) capability is developed...

‣ Trajectory planning and supervisory control for the cleaning and inspection of subsea structural nodes

Williams, Scott
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 177 leaves
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by Scott Williams.; Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Ocean Engineering; and, (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1984.; MICROFICHE COPY AVAILABLE IN ARCHIVES AND ENGINEERING.; Bibliography: leaves 172-177.

‣ Designerds! : television as a tool for design education and a medium for problem-based learning; Television as a tool for design education and a medium for problem-based learning

Hatton, Chandler
Fonte: Massachusetts Institute of Technology Publicador: Massachusetts Institute of Technology
Tipo: Tese de Doutorado Formato: 37 p.
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Many individuals have limited knowledge of engineering. As a result, high school students are often unaware of opportunities in engineering professions. Designerds! is a television show pilot targeted toward a young audiences that provides an introduction to product design. The pilot documents product development by engaging MIT graduate students in a collaborative, real world design challenge. The semester-long project followed the progress of two groups of MIT graduate students as they developed concepts for new musical instruments. Participants worked together to bring their instrument from the initial brainstorming stage through prototype production. The Designerds! program aspires to simultaneously educate groups of graduate students by facilitating Problem-Based Learning and to inform youth about product design through television media. The goal was to demonstrate the emerging educational opportunities provided by the entertainment industry. Furthermore, the project was intended to foster a collaborative design environment in which MIT graduate students work cooperatively on a design project, building teamwork, and leadership skills. The project successfully demonstrated the media's potential for teaching skills for product development and promoting the engineering profession. However...