Browsing Theses - Department of Mechanical Engineering by Title
Now showing items 1-20 of 61
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Collision resilient foldable micro aerial robot
(Bilkent University, 2019-10)Collision management strategies are integral part of micro air vehicles for the reliability of their operation. Collision avoidance strategies require enhanced environmental and situational awareness for generating evasive ... -
Concurrent design of energy management and vehicle stability control algorithms for a parallel hybrid vehicle using dynamic programming
(Bilkent University, 2012)Concurrent design of controllers for a vehicle equipped with a parallel hybrid powertrain is studied. Our work focuses on simultaneously solving two automotive control problems, energy management and vehicle stability, ... -
A control allocation technique to recover from driver-induced oscillations
(Bilkent University, 2019-12)The focus of this thesis is the study of driver induced oscillations. When the rear tires of a car are force saturated due to aggressive driver behaviour, high velocity on a slippery road, sudden steering action or heavy ... -
Design and characterization of a micro mechanical test device
(Bilkent University, 2016-08)Devices with micro- and nano- scale components are becoming more commonplace and demand for better quantification of the properties such as Young's modulus, stiffness, and damping of small-scale components is increasing. ... -
Design and fabrication of micro end mills for the machining of difficult-to-cut materials
(Bilkent University, 2016-09)Micromilling is a cost-e ective method of fabricating miniaturized components with complex, three-dimensional features made from di cult-to-cut materials. Microcutting tools are exposed to harsh conditions during machining ... -
Design of a droplet based microfluidic reactor to synthesize chitosan coated iron oxide nanoparticles
(Bilkent University, 2019-07)Nanoparticles possess unique structural, mechanical, thermal, optical and chemical properties which are highly dependent on their size; therefore it is important to be able to synthesize them uniformly. In general they ... -
Design, control, fabrication and maneuverability analysis of an untethered miniature soft robot
(Bilkent University, 2019-10)As the robotics field grows, it searches for new potential workspaces to be interacting with. The conventional robotics, which involves utilization of robots made out of hard materials like metals and hard plastics, has ... -
Design, control, modeling, and gait analysis in miniature foldable robotics
(Bilkent University, 2018-09)Miniature or micro robotic platforms are perfect candidates for accomplishing tasks such as inspection, surveillance, and hazardous environment exploration where conventional macro robots fail to serve. Such applications ... -
Design, development and performance evaluation of a three-axis miniature machining center
(Bilkent University, 2011)There is a growing demand for highly accurate micro-scale parts from various industries including medical, biotechnology, energy, consumer, and aerospace. Mechanical micro-machining which is capable of fabricating three ... -
Design, fabrication, and applications of electrostatically buckled nanomechanical systems
(Bilkent University, 2018-08)Buckling is an important resource for memory and sensing applications at the micro- and nano-scale. Although di erent approaches have been developed to access buckling, such as the use of pre-stressed beams or thermal ... -
Design, fabrication, and applications of multi-mode nanoelectromechanical systems
(Bilkent University, 2017-07)Miniaturization of systems allowed wide spread consumer use of microelectronics, integrated circuits and MEMS based sensors. Thanks to the advancement in microfabrication methods, it is possible to build structures with ... -
Development of a modular control algorithm for high precision positioning systems
(Bilkent University, 2012)In the last decade, micro/nano-technology has been improved significantly. Micro/nano-technology related products started to be used in consumer market in addition to their applications in the science and technology ... -
Development of a non-ordinary state-based peridynamics solver
(Bilkent University, 2019-10)Damage prediction is crucial in the design process of engineering structures to ensure structural integrity. The limitations of empirical methods and the high costs associated with experimental analyses have prompted the ... -
Development of a supervisory controller for energy management problems
(Bilkent University, 2011)Multi energy source systems, like hybrid electric vehicles in automotive industry, started to attract attention as a remedy for the greenhouse gas emission problem. Although their environmental performances are better ... -
Development of a vector sensor using piezoelectric support beams
(Bilkent University, 2016-09)Underwater listening has attracted great interest since the twentieth century. Formerly, scalar hydrophones were used to detect sounds underwater by measuring only the pressure changes. These sensors needed to form an ... -
Development of an iterative learning controller for polymer based micro-stereolithography prototyping systems
(Bilkent University, 2016-09)Additive manufacturing systems provide fast and accurate fabrication opportunities for micro-scaled structures. Various methods of processing are used for fabrication of different materials. Stereolithography is an important ... -
Development of control oriented vehicle models and their application to adaptive control allocation problems
(Bilkent University, 2018-10)Emerging vehicle control systems have increased the need for valid vehicle models. In this study, two controller oriented vehicle models are developed and linearized for easier controller design. These models are validated ... -
Development of multi-axis laser micromachining system suitable for machining non-linear contoured surfaces
(Bilkent University, 2016-09)In recent years, studies on manufacturing systems have proved the importance of cooperation of positioning systems with laser cutting technology. The performance of the manufacturing system can be improved by utilizing ... -
Development of nanoelectromechanical systems functionalized by vacuum organic thermal evaporation and their gas sensing applications
(Bilkent University, 2017-02)Nanoelectromechanical systems (NEMS) are an exquisite sensor technology which is also potentially low-cost since it can be measured electronically and large scale produced using semiconductor fabrication techniques. Since ... -
A droplet-based microfluidic reactor for silica nanoparticle synthesis and post processing of quantum dots
(Bilkent University, 2017-08)The unique properties of nanoparticles mainly depend on their size and morphology; thus, it is of the utmost importance to synthesize them monodispersely to be useful in an application. Micro uidic reactors enable a ...
