Materials Literature
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Advances in synchrotron radiation light source technology have opened new lines of inquiry in material science, biology, and everything in between. However, x-ray detector capabilities must advance in concert with light source technology to fully realize experimental possibilities. X-ray free electron lasers (XFELs) p…
A series of up to seven irradiation experiments are planned for the Advanced Gas Reactor (AGR) Fuel Development and Quantification Program, with irradiation completed at the Advanced Test Reactor (ATR) at Idaho National Laboratory (INL) for the first experiment (i.e., AGR-1) in November 2009 for an effective 620 full…
The thermal degradation of two polyurethane elastomers was investigated via thermal gravimetric analysis coupled with gas chromatography/ma ss spectrometry. Decomposition occur s in a multi - step fashion with similar onset temperatures for both materials. Apparent activation energy plots were calculated inside Model…
Fuel cells are energy conversion devices that generate electricity and heat through electrochemical reactionsinvolving hydrogen and oxygen. They are divided into different types according to the electrolytes and the operating temperatures. One promising fuel cell type, which can be used as an on-board power supply in…
Results from a research study concerned with developing an experimentally validated computational tool for predicting the progressive damage and failure response of 3D woven textile composites (3DWTCs) in a multiscale framework are presented. There are different constituents within the textile composite; fiber tows, i…
Eco-cements are a desirable alternative to ordinary Portland cements because of their lower CO2 footprints. For instance, the manufacture of Calcium SulfoAluminate (CSA) cements is more environmentally friendly than that of Portland cements as their production may decrease CO2 footprint by up to 40%. CSA cements conta…
At its core, research represents an attempt to break from the "this is the way we have always done it" paradigm. This idea is evidenced from the start in this research effort by the problem formulation to develop a new way to generate synthetic debris that mimics the samples that would be collected for forensics purpo…
Long-fiber discontinuous composite systems in the form of chopped prepreg tapes provide an advanced, structural grade, molding compound allowing for fabrication of complex three-dimensional components. Understanding of process-structure-property relationship is essential for application of prerpeg platelet molded comp…
In the pipeline industry, the Charpy impact test is the most common method for determining the fracture arrestability (or toughness) of a line pipe steel. Since the 1960s, line pipe steel has increased in both its stress capacity and toughness through advanced steel making and rolling processes. However, due to the lo…
Thesis: S.M., Massachusetts Institute of Technology, Department of Nuclear Science and Engineering, 2017.
Die Permeation durch Strukturen alternierender anorganischer und polymerer Schichten wurde auf der Grundlage theoretischer Modelle untersucht. Eine hohe stationäre Barrierewirkung wird durch eine sehr niedrige Dicke der polymeren Zwischenschichten erzielt. Dagegen führt die Vergrößerung der Schichtdicken sowie des Ver…
Pultrusion ist eine etablierte Herstellungstechnik für die Produktion faserverstärkter Kunststoffprofile. Der Prozess ist durch einen relativ hohen Automatisierungsgrad und geringe Investitions- und Betriebskosten im Vergleich zu den meisten anderen Herstellungstechniken für Faserverbundbauteile gekennzeichnet. Als St…
Resources for the eponymous IOP book
In dieser Arbeit wird die mehrdimensionale ortsaufgelöste Simulation von Lithium-Ionen-Batterien erörtert, welche physikochemische, elektrische sowie thermische Effekte beinhaltet. Ferner werden verschiedene Ansätze zur Modellvalidierung erarbeitet und an Zell-Prototypen durchgeführt. Es wird eine Methodik vorgestellt…
Abstract: Fusion research requires high quality diagnostics to understand the complex physical processes involved. Traditional analogue systems are complex, large and expensive, and expansion of diagnostic capabilities is often impossible without building a completely new system at considerable expense. Field-programm…
Diese Dissertation behandelt experimentelle Untersuchungen an drei magnetischen Pyrochloren, Nd2Zr2O7, Sm2Zr2O7 and Gd2Zr2O7. Es wurden einkristalline und pulverförmige Proben hergestellt wobei die zwei erstgenannten Substanzen in der Pyrochlor Struktur kristallisieren, während Gd2Zr2O7 einige Platzwechsel-Defekte von…
O memristor é um dos dispositivos mais promissores sendo estudados para múltiplos usos em sistemas eletrônicos, com aplicações desde memórias não voláteis a redes neurais artificiais. Seu funcionamento é baseado na formação e ruptura de filamentos condutores nanométricos, o que altera drasticamente a resistência do di…
Rolling contact fatigue (RCF) cracks are a widespread problem that impairs the service life of railway rails and wheels, with an associated high cost of labour and capital expenditure for remediation. Severe RCF cracks cause serious safety issues as they can turn down at a larger propagation angle into the rail potent…
Developing the third generation of Calphad databases with more physical basis valid within a wider temperature range is the aim of the present work. Atomistic scale (ab-initio) methods, particularly techniques based on DFT theory, are used for modelling dierent phenomena, so as to gauge the capacity for use in Calphad…
A systematic series of high-silica fluoride MFI zeolites were efficiently synthesised using a variety of shape and size structure directing agents. The effects of these structure directing agents on the zeolite synthesised have been studied by the complementary use of X-ray diffraction and solid state NMR. These 14N,…