This page contains a calendar showing all our coming activities. For information on how to add this to your own digital calendar, see the bottom of this page.
December2018
Mon
Tue
Wed
Thu
Fri
Sat
Sun
1
2
3
Final MSc presentati…
Final MSc presentation Irene Marsman
Starts: 1:00 pm
Ends: December 3, 2018 - 1:30 pm
Location: Instruction room M
Description:
We are pleased to invite you to attend the PME-Final MSc presentation on:
Monday 3 December 2018, 13h00
Instruction room M
Mekelweg 2
2628 CD DELFT
Title: Ice-induced vibrations of wind turbines with a jacket support
structure
The offshore wind industry is a relatively new but fast growing field in the global shift towards renewable energy to reduce carbon emissions. However, more difficulties arise in the design of an offshore wind turbine (OWT) compared to an onshore wind turbine, as the offshore structures are exposed to more environmental influences. One of those is sea ice. As wind farms are being built in areas where floating sea ice exists, such as the Baltic Sea and Bohai Bay, the effect of interaction of ice with an offshore wind turbine needs to be taken into account in the design phase. Several accidents have taken place in the past, where offshore structures such as bridges, lighthouses and oil platforms were exposed to severe ice loading, leading to human discomfort and damage or even failure of the structure. Recent research has shown that ice-induced vibrations (IIV) can develop in wind turbines with a monopole foundation. This research studies IIV in a wind turbine with a jacket foundation, which is used in deeper waters.
The presentation will be given in English.
13h20 Debate
13h30 End
Attending colloquia is an obligatory part of the curriculum of PME.
The presence of other people who are interested will be appreciated.
We are pleased to invite you to attend the PME-1st MSc presentation at:
Monday 3 December 2018, 14.00 hrs
Instruction-room g
Mekelweg 2
2628 CD DELFT
14.00 hrs B. Bikker, specialisation: MNE
professor: U. Staufer, coach: M.K. Ghatkesar
Title: Improved TEM-grid holder for Cryo-Electron Microscopy
Cryo-electron microscopy has become a powerful method for the structural analyses of biomolecules and their complexes. The successful vitrification of biological matter and the recent developments in direct detectors have enabled the imaging of proteins at near-atomic level.
Although the process of vitrification was successfully developed two decades ago, the methods to protect the sample from contamination and devitrification have seen little improvement; The amount of samples generating images of sufficient quality is less than 10%, with the current state of the art techniques.
Precise monitoring of the temperature and contamination of the TEM-grid, would allow for the identification of unusable samples before they are imaged.
The purpose of this study is to investigate the feasibility of integrating sensing in the TEM-grid holder and the prevention of damage caused by assembling of the holder. The research has focused more specifically on a passive wireless temperature sensor using surface acoustic waves.
The presentation will be given in English.
14.25 hrs Debate
14.45 hrs End
Attending colloquia is an obligatory part of the curriculum of PME.
The presence of other people who are interested will be appreciated.
We are pleased to invite you to attend the PME-1st MSc presentation at:
Friday 7 December 2018, 09.00 hrs
Lecture hall C (Daniel Bernoulli)
Mekelweg 2
2628 CD DELFT
09.00 hrs C. Zhang, specialisation: MNE
professor: M. Tichem, coach: M.K. Ghatkesar
Title: Fabrication of Polymer-based Actuators for Organ-on-Chips Platforms
Conventional static cell cultures and animal models for clinical study are limited in mimicking human cellular environment in vivo. Novel reliable technologies are expected from the pharmaceutical industry to better understand the mechanism of drugs and cell behaviour in the organ level. Organ-on-Chips (OOCs), microfluidic devices designed to simulate physiological functions of tissue and organs, might be the solution. Cytostretch is an OOC platform that allows cyclic mechanical stretching of the tissue in culture. The topic of the thesis is to design a polymer-based actuator for Cytostretch using dielectric elastomer material. This presentation will explain different principles for polymer-based actuator design, their applications, advantages and limitations. The research plan and risk analysis will also be included in the end.
The presentation will be given in English.
09.25 hrs Debate
09.45 hrs End
Attending colloquia is an obligatory part of the curriculum of PME.
The presence of other people who are interested will be appreciated.
We are pleased to invite you to attend the PME-Final MSc presentation on:
Wednesday 19 December 2018, 12h00
Instruction room I
Mekelweg 2
2628 CD DELFT
12h00 Korné Sweers, specialisation: MSD
Coaches: Prof.dr.ir. J.L. Herder, Dr. N. Tolou, Ir. P.R. Kuppens
Title: Measuring plastic deformation of silicon as a result of thermal oxidation
Thermal oxidation in silicon microelectromechanical systems (MEMS) induces stress in the oxide film and silicon. Such residual stresses are usually unwanted, as it can influence performance or damage components. It can also cause unwanted plastic deformation in silicon, as was observed in previous research. Current measurement methods in MEMS are not able to distinguish plastic and elastic strain as a result of thermal oxidation. This thesis presents a novel method to distinguish elastic and plastic strain in silicon beams, by removing the oxide layer to show the plastic strain. A lever mechanism is used as a mechanical amplifier. The plasticity model developed by Alexander and Haassen (AH) is used in a numerical model to predict the elastic and plastic strain. Experiments in epitaxially grown silicon show significantly less plastic strain than predicted by the model. We conclude that the AH model is not valid for epitaxially grown silicon with low or zero initial dislocations. As significant plastic deformation was observed in FZ silicon samples in previous research by P.R. Kuppens, it is concluded that epitaxially grown silicon is the better choice when plastic deformation is to be avoided.
The presentation will be given in English.
12h20 Debate
12h30 End
Attending colloquia is an obligatory part of the curriculum of PME.
The presence of other people who are interested will be appreciated.
We are pleased to invite you to attend the PME-Final MSc presentation on:
Wednesday 19 December 2018, 13h00
Instruction room J
Mekelweg 2
2628 CD DELFT
13h00 Saurabh Sontakke, specialisation: MSD
Coaches: Ir. J.W. Spronck, Dr. A. Hunt
Title: Resonant hair clipper
Philips is a giant in the consumer lifestyle goods and prides itself over the quality of equipment produced. Hair clippers are one of the more popular products manufactured by Philips and the hair clipper division of Philips focuses on innovation to maintain popularity. This time, the idea was to make a resonant hair clipper which can increase the battery life and put Philips one step ahead of its competitors in the grooming market. The aim of this project was to answer the question of whether the concept of resonance can be used in Philips hair clippers to reduce the overall power consumption without modifying the currently available driving mechanism for the reciprocating cutter, which is a combination of a permanent magnet direct current (PMDC) rotary motor and a Scotch-yoke type mechanism. An additional goal of this project was to mathematically model the hair clipper which can be used for predicting the power consumption in a Philips hair clipper. It was concluded that the use of resonance in a hair clipper is an idea worth pondering over. It can result in increasing the battery life and make Philips’ hold over the consumer grooming market even stronger. In addition, a model of the hair clipper has been made, which can be used to predict the amount of power consumed by Philips hair clipper running at different speeds.
The presentation will be given in English.
13h20 Debate
13h30 End
Attending colloquia is an obligatory part of the curriculum of PME.
The presence of other people who are interested will be appreciated.
In order to add the live calendar, click on the html link. The calendar will now open in a new tab. In the bottom right corner, there is a button to add the calendar to you google calendar.
