Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 20 of 133 for “"multi-material"”.
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A programmable pipeline for multi-material fabrication
… scaling up to output continuous mixtures of multiple materials at increasing resolution over ever larger print volumes. This poses an enormous computational challenge: large high-resolution prints comprise trillions of voxels and petabytes of data and simply modeling and describing the input …
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Topology optimization with manufacturable multi-material primitives
… have been made toward determining algorithms for multi-material optimization. A preexisting algorithm is modified to broaden the type of design possible with the method. The algorithm uses a three-phase design problem, a void phase and two other materials, and implements Heaviside Projection …
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MultiFab : a multi-material 3D printing platform
This thesis presents the development of MultiFab, a multi-material 3D printing architecture that is high-resolution, scalable, and low-cost. MultiFab enables the 3D printing of parts with materials that interact optically and mechanically. The hardware is low-cost since it is built almost …
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Crashworthiness Multi-Material Topology Optimization for Minimum Mass
… optimization (TO) and emerging techniques like multi-material topology optimization (MMTO) are effective for designing lightweight structures subjected to linear loading, but they cannot consider dynamic crash loading. Crashworthiness is most effectively simulated using dynamic finite element …
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Process-Property Characterization for Multi-Material Jetting Applications
Material jetting (MJ) is an additive manufacturing (AM) process that involves the selective jetting of a liquid material into the shape of a layer and subsequent solidification, often via ultraviolet (UV) irradiation, in a layer-wise fashion. The MJ process has the potential to emerge as a robust …
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Multi-Material Discrimination Using Photon Counting Spectral Computed Tomography
Quantitative volumetric mapping of multiple materials with spectral computed tomography (CT) has applications in many areas including biomedical imaging, defense and security, geophysical imaging of rock composition and in materials and chemical imaging. Dual or multi-kVp x-ray exposure when using …
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Sharp interface schemes for multi-material computational fluid dynamics
… thesis we consider the solution of compressible multi-material flow problems, where each material is governed by the Euler equations and the material interface may be considered to be a perfect discontinuity separating macroscopic pure-material regions. Working in the framework of Godunov-type …
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Hybrid inkjet and direct-write multi-material additive manufacturing
Recently there has been a trend towards combining multiple forms of additive manufacturing together for increased functionality, freedom and efficiency. In this work, two forms of multiple-material additive manufacturing technologies - inkjet and direct-ink writing - are combined in a hybrid …
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Multi-Material Continuum Topology Optimization for Embodied Carbon Objectives
… often seeking to make structures more materially efficient. It therefore offers a means to reduce the structural weight, and as such, minimize the global warming potential (GWP). This research provides an exploration of bi-material optimization problems that minimize GWP as well as …
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Multi-Material Fiber Fabrication and Applications in Distributed Sensing
… sensing technology when measurement at multiple locations is required. Traditional distributed sensing methods based on silica optical fiber and electric coaxial cables have some limitations for specific applications, such as in smart textiles and wearable sensors. By adopting the fiber …
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Multi-material Adhesive Bonded Joints Under Static And Dynamic Loading
… and facilitating the integration of dissimilar materials, adhesives can contribute to more efficient, lightweight designs. However, to fully leverage these benefits—especially in high-performance applications—adhesive materials must exhibit robust behavior under both static and dynamic loading …
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Computational modeling of advanced, multi-material energetic materials and systems
… the reactive mechanism of different explosive materials; study how detonation waves travel through them and determine how to initiate explosives with the smallest amount of booster material. These types of problems are numerically challenging to model and require multiple components that …
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Design and fabrication of a modular multi-material 3D printer
This thesis presents 3DP-0, a modular, multi-material 3D printer. Currently, 3D printers available on the market are typically expensive and difficult to develop. In addition, the simultaneous use of multiple materials in 3D printing has not been extensively explored. The printer presented in this …
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Toward functional magnetic applications for multi-material inkjet 3D printing
… to rapidly extend as the library of printable materials continues to grow. This thesis explores printed objects uniquely enabled by the addition of a magnetic ink to the existing repertoire of materials for the MultiFab printer, a high-resolution, multi-material inkjet 3D printer. Magnetic …
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Analysis of the Interface Properties of Multi-material 3D Printed Structures
Multi-material 3D printed (MM3DP) samples offer enhanced mechanical performance with the added benefit of being customizable for specific applications. However, MM3DP structures have weak adhesion at the boundary interface. So, the interface characteristics in those structures are a critical factor …
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Directed energy deposition of tool steel/copper alloy multi-material structures
Multi-material structures (MMSs) are attractive due to their unique advantages in achieving tailored properties at different locations in a single part. Producing such structures by additive manufacturing has been gaining more and more attention because of the beneficial characteristics of additive …
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Adhesively Bonded Multi-Material Single Lap Joints Under Static Tensile Loading
… the stiffness, strength and fracture behavior of multi-material single-lap joints. It describes the mechanical behavior of a multi-material single lap joints subjected to static tensile loading in the longitudinal direction. First, steel-to-steel and aluminum-to-aluminum joints are tested to …
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Thermomechanical and Numerical Modeling of Energetic Materials and Multi-Material Impact
… application of our model to many challenging multi-material physics problems.
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Acceleration of Eulerian Multi-Material Methods on Highly Parallel Compute Architectures
… compute architectures, with a focus on multiple graphics processing units (GPUs), as well as to develop algorithms for the numerical simulation of multiple interacting materials on modern, massively parallel, computer hardware. The Ripple framework is applicable to a wide range of HPC …
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Minimizing embodied carbon in multi-material structural optimization of planar trusses
… As a result, the carbon embodied in construction materials, especially in a building's structural system, is becoming a larger contributor to the total carbon impacts of a building. Material type and quantity are important in determining the extent of this contribution because both will affect the …
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