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 21 for “"Precision Engineering"”.
-
Application of precision engineering for nanometre focussing of hard X-rays in synchrotron beam lines
… beam lines. This dissertation critically reviews precision engineering and associated technologies that are relevant for building nano focus beamlines, and the following key issues are explored: • Long term position stability due to thermal effects • Short term position stability due to vibration …
-
Principles and techniques for designing precision machines
… is written to advance the reader's knowledge of precision-engineering principles and their application to designing machines that achieve both sufficient precision and minimum cost. It provides the concepts and tools necessary for the engineer to create new precision machine designs. Four case …
-
Design of a snowboard simulating exercise device
… Deterministic Design process developed in MIT's Precision Engineering Research Group, a Snowboarding Exercise Machine is created. This design features a carriage constrained to move back and forth along a curved track. Rotational sensations are created using an angular motion module mounted onto …
-
Error analysis of motion transmission mechanisms : design of a parabolic solar trough
… Stacy Figueredo from Prof. Alexander Slocum's Precision Engineering Research Group at MIT and a team of students from the 2.752 Mechanical Engineering course and resulted in a final design that uses two linear actuators to rotate a monolithic parabolic trough over a 2600 range. A measure of …
-
Nano-materials for novel magneto-rheological liquids and nano-fluids
… materials have been synthesized via nanometer precision engineering, and their resulting properties continue to defy the thermal, electrical, and mechanical limitations of conventional materials [1]. Even liquid suspensions of nano-particles yield tremendous enhancements in thermal and …
-
Design of a novel six-axis metrology system for meso-scale nanopositioners
… Six axis measurements are a crucial part of precision engineering and characterizing machine performance, however commercially available sensors are not cost-efficient and are difficult to incorporate into meso-scale machines. The novel approach presented here uses three pairs of laser diodes …
-
Design, construction and testing of an ocean renewable energy storage scaled prototype
… storage hydro is being developed within the Precision Engineering Research Group at MIT: the Ocean Renewable Energy Storage (ORES) project. Large, hollow concrete spheres are created, fitted with a reversible pump-turbine and deployed to the sea floor. Water is then allowed to flow through …
-
Modeling and control of a silicon substrate heater for carbon nanotube growth experiments
The precision engineering research group at MIT is working on carbon nanotube growth experiments on silicon substrates and in microfabricated silicon devices, to try to produce improved bulk nanotube growth. For this thesis, a heating control system was designed and implemented for eventual use in …
-
Design of a metrology & characterization system for a compliant mechanisms course
… in the benefits compliant mechanisms give to precision engineering. The impact, by improving the quality of designs capable by professional engineers by teaching them about using FACT to design flexures, will contribute to higher quality, more agile, and more reliable technology worldwide. The …
-
Design and manufacture study of Ocean Renewable Energy Storage (ORES) prototype
… energy storage concept has been created by the Precision Engineering Research Group (PERG) at MIT. The concept is to build hollow concrete structures to act as lower reservoir, install pump/turbine units, deploy them under the ocean and use the hydrostatic pressure of the water column as an …
-
Automation and scalability of in vivo neuroscience
… repeatable and reliable experimental procedures. Precision engineering would also allow us to perform more complex experiments by allowing us to take novel approaches to existing problems. Two such tasks that would see great improvement through automation and scalability are accessibility to the …
-
Force Feedback Control of Tool Deflection in Miniature Ball End Milling.
… tool force model developed previously at the Precision Engineering Center used measured forces to predict depth of cut. A separate tool stiffness model was developed to predict tool deflections (axial and radial) based on measured forces. Experiments involving machined grooves in hard steel …
-
ARMING STRATEGIES TO IMPROVE THE IMMUNOTHERAPEUTIC POTENTIAL OF ONCOLYTIC HERPESVIRUSES
… strategies demonstrate the power of data-driven, precision engineering in oncolytic virotherapy, addressing key immune evasion mechanisms and advancing the development of more potent immunotherapeutic approaches for cancer treatments.
-
Rational Engineering of Bacteria and Biohybrids for Enhanced Transport and Colonization in the Tumor Microenvironment
… Synthetic biology today enables the precision engineering of microbes with traits for improved survival, penetration, and replication in the TME, rationally optimizable through computational modeling. In this dissertation, we explore several facets of rationally engineering of …
-
Advancing Tools for Quantifying and Engineering Microbial Consortia
… metabolites. These criteria can help guide engineering of metabolic pathways and has implications for understanding evolution of natural communities. I next investigated utilizing horizontal gene transfer (HGT) as a tool to engineer microbial consortia. Due to the role of HGT in spreading …
-
Cheese Machines and Cellos: Technical Craftsmen and Craft Technicians
… and related personnel at a medium-sized precision engineering company in Hamilton, New Zealand. The company specialises in high quality niche products and machinery for the dairy, aviation and medical technology industries. Its work involves a wide variety of engineering crafts and …
-
Analysis and design of rapid prototyped mechanisms using hybrid flexural pivots
… technology fields such as nanotechnology and precision engineering. For an instance, a great number of nanopositioning systems are made out of flexures. Examples of these systems are those used in scanning probe microscopy and many other types of metrology tools. Not having friction is a …
-
21st century manufacturing machines: Design, fabrication and controls
… multilayered composites and hybrid flexures for precision engineering, medical training, and machine tools for reduced life applications and tests design-for-fabrication strategies. The results suggest the strategies effectively address existing problems, providing a repertory of creative …
-
A STUDY ON NOVEL COMPLIANT MECHANISMS FOR ULTRAPRECISION MACHINING
Ultraprecision machining and compliant mechanisms (CMs) are pivotal in advanced manufacturing, offering superior motion repeatability, zero backlash, and high output quality. This thesis develops three novel CMs for ultraprecision setups: a 1DOF CM with an improved stiffness-to-weight ratio for …
Page 1 of 2