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 137 for “"Fixtures"”.
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Design of ultra precision fixtures for nano-manufacturing
… three fundamental limitations of precision fixtures; (1) Elimination of stiction via integrated compliance, (2) Integration of sensors and actuators to enable correction of systematic and time variable alignment errors, and (3) Improvement of fixture contacts' stability and longevity via …
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Haptic teleoperation of mobile manipulator systems using virtual fixtures.
… To improve efficiency and accuracy, virtual fixtures were implemented with the use of a haptic joystick. Instead of modeling the MMS as a single unit with three redundant degrees-of-freedom (DOF), the operator controls either the manipulator or the mobile base, with the command strategy …
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The computer-aided design and analysis of impulse magnetizing fixtures.
… that arise in the design of magnetizing fixtures for isotropic materials. Finally, the utility of the methodology in designing a limited range of axial multipole fixtures is demonstrated with a case study on a fine pole-pitch axially magnetized ring magnet.
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Experimental evaluation of recycling rare earth elements from waste fluorescent light fixtures
Includes bibliographical references (pages 89-91).
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The Kinematics of Rigid Body Contact in the Design and Analysis of Machining Fixtures
… available for the design and analysis of fixtures are frequently complicated and costly. This thesis concentrates on the development of methods that provide a rapid and useful approximation to the behavior of the fixture-workpart system from the perspective of the kinematics of rigid body …
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Design of fixtures and specimens for high strain-rate tensile testing on a drop tower
… tests only. This project aims to design a set of fixtures and specimens to allow the machine to perform tensile tests. Two major design options were considered and analyzed using engineering mechanics and finite element analysis. The design selected used a double dog-bone specimen bent into a …
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Integration of Additive Manufacturing with CNC Sheet Metal Fabrication for Hybrid Fixtures: Design and Implementation of Precision Assembly Interfaces
… sheet metal fabrication to create hybrid check fixtures. In this case the tool is a hybrid of a sheet metal base and an additive check surface. Using the Agile product development framework, the team conducted a series of sprints going from concept models to a final production tool in just over …
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Integration of Additive Manufacturing with CNC Sheet Metal Fabrication for Hybrid Fixtures: Design and Implementation of Sheet Metal Tooling Supports
… sheet metal fabrication to create hybrid check fixtures. In this case, the tool comprises a sheet metal base and a powder bed fusion cover. Using the Agile product development framework, the team conducted a series of sprints going from concept models to a final production tool in just over two …
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Design and engineering of low-cost centimeter-scale repeatable and accurate kinematic fixtures for nanomanufacturing equipment using magnetic preload and potting
… kinematic fixture and presents a case study of fixtures used for tool exchange on dip pen nanolithography machines. A prototype fixturing assembly was fabricated and tested for repeatability and stability in six degrees of freedom. The test results concluded that the fixture has a 1-o- 3-D …
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Integration of Additive Manufacturing with CNC Sheet Metal Fabrication for Hybrid Fixtures: Design and Implementation of Powder Bed Fusion Tooling Surfaces
… sheet metal fabrication to create hybrid check fixtures. In this case, the tool comprises a sheet metal base and a powder bed fusion cover. Using the Agile product development framework, the team conducted a series of sprints going from concept models to a final production tool in just over two …
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Relamping hotel guestrooms to decrease operating costs
… determine inactivity of the room, usage of light fixtures, and usage of daylight. Light levels and wattage readings were taken to determine consistency in light levels of the lamps and energy used by the different fixture/lamp combinations in each of the four rooms. One treatment room and one …
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Novel Auxiliary Fixture System to Enhance Milled Thin-Walled Parts Quality
… machining efficiency. Employing multi-pin fixtures to increase the damping and stiffness of the vibration modes of the workpieces is one of the best methods to suppress vibrations. The performance of multi-pin fixtures depends on the efficiency of their pin’s mechanism. In this study, a …
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Design method of a modular electronic printed circuit board testing system
… by upgrading the design of existing test fixtures versus purchasing off of the shelf solutions. The second phase will identify a design concept, offer specific design solutions, and finally a fully designed system that is capable of improving the performance of the test fixtures in …
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An investigation of the determinants of demand for UEFA qualifiers from 2012 to 2017
… the dataset incorporates all group and play off fixtures for each qualifying campaign. The results show that stadium quality, increases in income, team quality and significant matches substantially increase attendance. In addition, the findings reject the uncertainty of outcome hypothesis. There …
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Development of a gear shift test setup for hybrid transmission vehicles
… (CAD) software in order to design mounts and fixtures. Those mounts and fixtures were then manufactured and implemented into the real setup. In addition, brushless DC motors were utilized and tailored to drive the transmission. The end result was both CAD and physical assemblies that are …
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Lumental : web-based tunable lighting control
… the light spectrum of spectrum-tunable light fixtures promises significant energy savings over binary or incremental dimming control. To enable this level of controllability, lighting must evolve from traditional physical interfaces towards autonomous systems that rely on behavior recognition. …
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An investigation of talent identification processes in the youth academies of professional soccer clubs for male foundation phase players (5-11 years old)
… development activities such as training and fixtures to help the player improve their overall game. However, TID processes within professional soccer academies hasn’t been assessed in detail, in particular within the youngest ages (5-11 years old). Our aim was to survey practitioners working …
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Policy design tool for managing indoor residential water demand in water-scarce regions
… through installation of efficient plumbing fixtures and the adoption of conservative water-use habits. Thus, correlation between efficient fixtures and habits should be considered.^ Second, a complex adaptive systems framework is developed to facilitate the application of different demand …
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A kinematic-coupling-based adaptive fixture for high precision positioning applications in flexible manufacturing systems
… level accuracy and repeatability with detachable fixtures will be an enabling technology in future manufacturing processes. Given the many sources of time variable errors in fixture alignment (i.e. thermal, load, vibration), the integration of actuators and sensors within fixtures will be …
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