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Showing 1 to 20 of 87 for “"Freeform"”.
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Interactive freeform solid modeling with haptic interface
… the metaphor of carving a solid block into a 3D freeform object. The VT interface includes stereo viewing and force feedback. The geometric modeling is based on the Sweep Differential Equation method to compute the boundary of the tool swept volume, and based on the ray-casting method to perform …
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Exploring fabrication principles for making freeform breadBoards
CurveBoards are 3D breadboards integrated into the surface of physical prototypes. CurveBoards offer both the flexibility of breadboards, i.e., the ability to add or remove components, while also integrating well with the shape of the prototype. Thus, designers can use CurveBoards to test function …
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Solid freeform fabrication using semi-solid processing
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Materials Science and Engineering, 1995.
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A robotic system for photopatteming of freeform surfaces
Additive manufacturing by photopolymerization (e.g., stereolithography) is attractive due to its high resolution and its compatibility with soft and hard polymers, composites, and biomaterials. While traditional stereolithography machines are designed to build on planar substrates, patterning of …
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Freeform Optical Design Methodologies and Surface Metrology Using Deflectometry
… of optical design and optical testing using freeform optics applied to astronomical optics. A science goal based motivation for why these technologies are important to develop in the context of the next generation of astronomical optics is presented in Chapter 2. This is followed by a summary …
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A surface texture modeling system for solid freeform fabrication
Solid Freeform Fabrication, SFF, is a set of manufacturing processes that fabricates parts as a bonded stack of individual layers. The Three Dimensional Printing process, 3DPTM process, is an SFF technology developed at MIT. It builds layers by ink jet printing binder onto the surface of a bed of …
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Designing aesthetically pleasing freeform surfaces in a computer environment
… are to be employed in the aesthetic design of freeform surfaces, these tools must better reflect the ways in which creative designers conceive of and develop such shapes. In this thesis, I studied the design of aesthetically constrained freeform surfaces in architecture and industrial design, …
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Computation with Curved Shapes: Towards Freeform Shape Generation in Design
… for example industrial design, shapes of a more freeform nature are prevalent. Accordingly, the research described in this thesis is concerned with extending the applicability of the shape grammar formalism such that it enables computation with freeform shapes. Shape computations utilise rules in …
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Freeform extrusion fabrication of advanced ceramics and ceramic-based composites
… Extrusion (CODE) is a recently developed freeform extrusion fabrication process for producing dense ceramic components from single and multiple constituents. In this process, aqueous paste of ceramic particles with a very low binder content ( < 1 vol%) is extruded through a moving nozzle …
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Precision hot-melt freeform 3D printing for monolithic multilayer microfluidics
… compatibility with a broad range of materials, freeform 3D printing may enable the construction of many different organ-on-chip models as well as micro-electromechanical systems, electrically small antennas, and polymer stents.
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Deflectometric Measurement of the Topography of Reflecting Freeform Surfaces in Motion
Measuring the topography of specular surfaces with strong surface structures in motion was impossible before this research. A new method based on singleshot phase-measuring de ectometry (SSPMD) and combining different solution aspects has been presented.
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Optimal design and freeform extrusion fabrication of functionally gradient smart parts
"An extrusion-based additive manufacturing process, called the Ceramic On-Demand Extrusion (CODE) process, for producing three-dimensional ceramic components with near theoretical density was developed. In this process, an aqueous paste of ceramic particles with a very low binder content (<1 vol%) …
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Freeform, direct-write assembly of thermoplastics and glasses: Theory, practice, and applications
… space. The latter approach, referred to here as freeform assembly, is particularly well-suited to fabricating sparse, free-standing frames comprising a network of connected filaments. These structures can be used as sacrificial molds, enabling the construction of networks of cylindrical channels …
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Robotic design construction : digital fabrication strategies for freeform masonry casting and mobile assembly
… methods of digital design fabrication for freeform masonry construction by robotics to improve the conventional masonry process. It starts from a two-sided investigation: I. existing digital fabrication techniques and applications; II. conventional masonry methods and processes. Afterwards, …
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Carbide formation in a nickel-based superalloy during electron beam solid freeform fabrication
The Electron Beam Solid Freeform Fabrication process involves the use of an electron beam to make near-net-shape metal parts without the need for tooling. Material in wire form is fed into a melt pool maintained on the surface of the part by the electron beam and a positioning system causes the …
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Development of a nano-precision ruling engine for machining of freeform micro-scale optical surfaces
Submission published under a 24 month embargo labeled 'Closed Access', the embargo will last until 2026-05-01
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Nebulizer facilitated molding of freeform 3D printed sacrificial scaffolds for breast tumor microenvironment tissue engineering
… complexity for tissue engineering applications. Freeform 3D printing opens up sacrificial molding to the third dimension. For example, sugar glasses including isomalt offer facile, high resolution printing and simple removal of the sacrificial material but only offer short dwell times in aqueous …
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Combined Compression and Shear Structural Evaluation of Stiffened Panels Fabricated Using Electron Beam Freeform Fabrication
… current aircraft structures. The Electron Beam Freeform Fabrication (EBF3) process can be used to manufacture unitized aircraft structures. The structural efficiency of blade stiffened panels made with EBF3 was compared to panels made by integrally machining from thick plate. The panels were …
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