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.
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Showing 1 to 20 of 223 for “"Machined"”.
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Machined Music
In this master thesis, the candidate presents his collection of original poems, accompanied by a critical introduction, which explains his writing and revision process. In the critical introduction, careful attention is given to his conception of what and how poetry does what it does as well as the …
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Particleboard simulation model to improve machined surface quality
Particleboard (PB) is a widely used panel material because of its physical properties and low cost. Unfortunately, cutting can degrade its surface creating rejects and increasing manufacturing costs. A major challenge is PB’s internal variability. Different particle and glue bond strength …
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Piezoelectric micro-machined ultrasonic transducers for medical imaging
… transducers making piezoelectric micro-machined ultrasonic transducers (pMUTs) an attractive alternative to the current bulk piezoelectric technology. This thesis aims to realize pMUT potential starting with the development of an effective single cell model that is further scaled to …
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Computer representations of machined parts for automatic inspection
A comparison is made between octrees, which are regular decompositions of volumes, and new, irregular decompositions called R-trees. This comparison is made within the context of the volume intersection problems that might be associated with an automatic inspection system. The results show that the …
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Sub-Grain Structure of Machined Copper and Stainless Steel
Made available in DSpace on 2014-12-09T17:13:42Z (GMT). No. of bitstreams: 1 6808053.pdf: 5144570 bytes, checksum: acb3554fa6335e2b5b50f30135ed5070 (MD5) Previous issue date: 1967
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Prediction of machined parts distortion by the finite element method
… residual stresses on the distortion of the final machined component. It was found that the final component distorted differently when the materials were simply removed from a solid billet with different material removal sequences. A preliminary investigation on the effects of cutting temperature …
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Pool boiling heat transfer enhancement with sink electrical discharge machined surfaces
… in surface topography. Sink electrical discharge machined surfaces demonstrated ten times higher heat transfer coefficient compared to a polished surface during these studies.
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High performance amplifier topologies implemented with a micro-machined vibrating capacitor
In this work, the design of a MEMS based differential amplifier is investigated. The goal of this investigation is to design, fabricate and characterize a differential amplifier whose performance is based on a physically coupled, but electrically isolated fully differential mechanical …
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Design for manufacturability methodology and data representation framework for machined components
… of DFM has been constrained, especially for machined components, by the lack of methodologies which are dependent on the process of manufacture, and the incomplete part data representation in CAD systems. This research created a DFM methodology for machined components, along with an …
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A true generative CAPP system for DFM application to machined components
… for manufacturability (DFM) application for machined components. It involves determining appropriate representation schemes of machined components and production facility resources. The created CAPP Module, developed using C++, consists of five process dependent modules for automatic process …
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MODELING AND TESTING OF WELDED STRUCTURAL JOINTS MACHINED WITH LASER CUTTING TECHNOLOGY
This doctorate thesis focuses on the impact of using different welding techniques on the performance and failure mechanisms of Hollow Structural Section (HSS) joints manufactured by Laser Cutting Technology (LCT). In mid-high-rise steel structures, Circular or Rectangular Hollow Structural Sections …
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Automatic generation of optimal process plans for machined parts from 3D solid models
… generate the optimal process plan for a machined part is presented. This method first recognizes machining features from the solid model of the part by recursive volume decomposition (RVD). An RVD method has been developed in this research to solve the computational complexity of the …
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Design of surface micro-machined inertial MEMS sensor with meta-heuristic topology optimization
Micro-Electro-Mechanical Systems (MEMS) are getting popular for a variety of applications due to their small size, low cost, and good performance. MEMS devices are designed by combining simple shapes based on the experience of previous cases. Using mathematical design methods such as Topology …
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Prediction of heat treatment distortion and optimization of manufacturing tolerances for machined components
1 PDF file (xvii, 178 pages)
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The effect of different machined surfaces on the physical properties of heat treated alloy steels : thesis
Thesis (B.S.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1926.
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One-Dimensional MEMS Optical Phased Array Systems Based on Surface Micro-Machined Silicon Mirrors for Scanning LiDAR Applications
Optical phased array (OPA) systems are an emerging technology for lightweight and miniature LiDAR scanners due to their compact size and construction that eliminate the need for robust physical moving parts, leading to a fast response, high reliability, and low power requirements. MEMS based OPA …
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Investigating the effects of AC voltage signals on micro-channels machined with the Spark Assisted Chemical Engraving process
Spark-Assisted Chemical Engraving (SACE) is a non-conventional method for microfabrication in glass. The process relies on multiple parameters for machining, but its stochastic nature often reduces the predictability of machining outcomes. While prior work has studied various individual parameters, …
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Design of non-serial, non-parallel flexural transmissions as applied to a micro-machined MEMS tuning fork gyroscope
The purpose of this work is to develop and implement design rules for flexures that emphasize directionality. This work is important for flexure designs that cannot be broken down into equivalent series or parallel components. The impact of this work is illustrated in the implementation of a …
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