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 81 for “"assembly processes"”.
-
Non-equilibrium self-assembly processes of complex dipolar colloids
… work correspond to two prototype non-equilibrium processes, which are lane formation and diffusion limited aggregation. In the case of lane formation it is Janus particles in AC electric fields which are considered. These particles form either chain-like aggregates or yield a self-propulsion …
-
Effective modeling of throughput time in semiconductor assembly processes
… event simulation (DES) models of a semiconductor assembly process capable of predicting average throughput time (TPT) within 6% of factory-floor measured average TPT. This represents a significant improvement over current DES models in the semiconductor industry, which commonly yield average TPTs …
-
Advancing complexity models for human-robot collaboration in assembly processes
L'abstract è presente nell'allegato / the abstract is in the attachment
-
Variation Simulation of Fixtured Assembly Processes for Compliant Structures Using Piecewise-Linear Analysis
… to include the effects of multi-step, fixtured assembly processes. This thesis introduces a new method to statistically analyze compliant part assembly processes using fixtures. This method, consistent with the FASTA method developed at BYU, yields both a mean and a variant solution. The method, …
-
Applying Intel's copy exactly methodology to standardize Ford Electronics SMD board assembly processes
Thesis (M.S.)--Massachusetts Institute of Technology, Sloan School of Management, 1997, and Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
-
Mesoscale simulation of block copolymer phase separation and directed self-assembly processes: Applications for semiconductor manufacturing
… was developed and used to studied directed self-assembly (DSA), especially in regards to applications for semiconductor manufacturing. Most of the thesis is spent investigating the effect that guiding layer properties and block copolymer properties have on line roughness and defect density in a …
-
Counterion identity effects on the self-assembly processes in a series of perfluorinated surfactant - water mixtures
The effects of counterion on the lyotropic liquid crystalline phase behaviour of some quaternary ammonium salts of perfluorodecanoic acid in water have been studied using a combination of optical polarising microscopy (OPM), deuterium nuclear magnetic resonance (211 NMR) and cryo-transmission …
-
Examining patterns of coexistence in the Cape genus Tetraria (Cyperaceae) from a phylogenetic perspective : tracing the history of community assembly processes
… attributes that determine the community assembly processes of competitive interactions and ecological sorting are subject to phylogenetic constraint and niche conservatism, suggesting that patterns of coexistence should be phylogenetically structured. This study compares patterns of …
-
Synthetic and mechanistic studies to expand the scope of alkyne metathesis dynamic covalent chemistry
… As part of the greater subset of molecular self-assembly processes, DCC allows for the assembly of complex molecules from simpler precursors through reversible covalent reactions. Alkyne metathesis has emerged as one of the most frequently applied reactions for the synthesis of shape-persistent …
-
Design and performance evaluation of an electric go-kart and custom permanent magnet brushless DC motor
… the drivetrain. Details of the fabrication and assembly processes are included for reference. The motor was not finished in time to be able to be tested, but the performance of the go-kart has been estimated through scientific calculations.
-
Polyoxomolybdates with emergent properties
… The present thesis is dealing with self-assembly processes of polyoxomolybdates but also with performing well-defined reactions at well-defined sites of the structurally well-defined but very complex metal oxide-based nanoobjects.
-
Discrete robotic construction
… from parts created using a variety of different processes. While fabrication has advanced significantly to enable the routine fabrication of complex and precise objects from computer designs, the assembly processes used to integrate these parts are still largely manual and are notoriously …
-
The Context of Tool Control in an Aircraft Assembly Environment Related to Productivity
… of its resources on tool control during the assembly of aircraft. Tool control is a strict process that demands time from the assembly process. This time is removed from the value-added time spent actually assembling the aircraft. A study at Lockheed Martin conducted in the Spring of 2016 is …
-
Microassembly via polymeric stamp-based transfer printing
This thesis aims to study microassembly of micro-scale objects involving transfer printing and its applications. Conventional top-down monolithic microfabrication schemes puts many limitations on fabricating structures with complex device architectures or packaging schemes. As such, engineering …
-
Attribute process methodology : feasibility assessment of Digital Fabrication Production Systems for planar part assemblies using network analysis and System Dynamics
… System (DFPS) is a concept describing a set of processes, tools, and resources that will be able to custom produce an artifact according to a design, fast, cheap, and easy, independently of location. A DFPS project is a complex assembly of custom parts that is delivered by a network of …
-
Polyelectrolyte Coatings with Internal Hierarchy
… hierarchy originate thereby from the self-assembly processes at different length scales. To generate different levels of hierarchy, the coatings were constructed by using either the layer-by-layer (LbL) deposition method (lateral chemical structure), the adsorption of supramolecular …
-
Variation propagation modelling and cost-oriented process optimisation for aircraft assembly
… in parts can make it difficult to achieve all assembly Key Characteristics (KCs) simultaneously. Despite assigning tight tolerances to sub-component manufacture, part variation propagation necessitates expensive and time consuming variation management processes such as shimming in order to …
-
Consequences of drought, flooding, and insect herbivory on the distributions of closely related willow and poplar (Salicaceae) species across hydrologic gradients in Minnesota wetlands
… diversity patterns. One of the community assembly processes that known to influence beta diversity is environmental filtering. Besides environmental filtering, biotic interactions can also affect beta diversity, if biotic factors exert differential effects on species performances across …
-
Nanoscale Selective Area Epitaxy for Optoelectronic Devices
… and random ordering resulting from the self-assembly processes, however, are detrimental to potential applications, prohibiting the type of engineering control necessary for complex systems. The work presented in this document has sought to overcome the limitations of self-assembly by …
-
Fabrication and redesign of a meso-scale six-axis nano-positioner system
… was built and tested. The fabrication and the assembly processes provided insight into possible redesign changes that would facilitate future manufacturing, as well as improve the performance of the nano-positioner. The fabrication of the prototype also allowed for the exploration of the …
Page 1 of 5