Materials Literature
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Results are reported from an ongoing experimental investigation of the effects of thermo-oxidative aging on the mechanical behavior of an epoxy shape memory polymer (SMP). Chemo-rheological degradation due to macromolecular scission and cross-linking is one of the main factors contributing to the chemical aging of the…
Low order aberration was founded when focused Gaussian beam imaging at Kodak KAI -16000 image detector, which is integrated with lenslet array. Effect of focused Gaussian beam and numerical simulation calculation of the aberration were presented in this paper. First, we set up a model of optical imaging system based o…
This paper presents an energy relaxation-based approach for the modeling of single crystalline magnetic shape memory alloy response under general two-dimensional magneto-mechanical loading. It relies on concepts of energy relaxation in the context of non-convex free energy landscapes whose wells define preferred state…
La presente invención se refiere a un material \ncristalino que se ha denominado ITQ-51 y que tiene \nuna composición molar en su estado calcinado y \nanhidro que viene dado por la ecuación: \ndonde: \n- M es un elemento, o mezcla de elementos, \ndiferentes a Si, Al y P. \n- El valor de x está comprendido entre 0 y 1.…
According to the conventional winding configuration of distribution transformers, denoted as L-H, the low voltage (LV) winding is located internally and the high voltage (HV) winding is located externally. This paper proposes a new winding configuration, denoted as H-L configuration, according to which the location of…
Uppsatsen bygger pa att undersoka vilka material samt processer som ar lampliga att anvanda i framtagning av en materialmatris for en textil cykelhjalm. Uppsatsen amnar till att presentera en mater ...
Biodiesel is fast becoming one of the key transport fuels as the world endeavors to reduce its carbon footprint and find viable alternatives to oil-derived fuels. This chapter presents material pertaining to various aspects of the multiscale modeling of heterogeneously catalyzed reaction systems. Modeling of the intri…
Magnetoelectric (ME) effect is defined as the change in dielectric polarization (P) of a material under an applied magnetic field (H) or an induced magnetization (M) under an external electric field (E). ME materials have attracted number of investigators due to their potential for improving applications such as magne…
The prospect of increasing energy efficiency and reducing power plant emissions (including CO2) results in an increased interest in technologies using natural gas. In addition, in view of the possibility of exploitation of shale gas deposits that could lead to a reduction in fuel costs, economic analyses of the constr…
As shape memory alloys (SMAs) become an established actuator technology, it is important to identify the fundamental mechanisms responsible for their performance by understanding microstructure performance relationships from processing to final form. Yet, microstructural examination of SMAs at stress and temperature i…
Abstract : A methodology was developed to predict fabric particle penetration performance for various wind speeds. Pressure drop across a fabric sleeve in a wind tunnel was measured along with the relationship of fabric pressure drop and fabric face velocity for a bench top swatch testing apparatus. The relationship b…
Experimental indentations are carried out on items of two different materials, taken in several location of various components from high pressure gas turbine rotor which have seen an extensive service. The components object of investigation consisted in 1st and 2nd high pressure turbine wheels made in nickel-base supe…
A novel type of white light emitting semiconductor quantum dot was characterized at the ensemble and single-molecule level. This kind of semiconductor nanocrystal can be made into white light emitting diodes, which have the potential to replace conventional lighting sources. The quantum dots used in this thesis consis…
2,4-diacetylphloroglucinol (2,4-DAPG)-producing fluorescent Pseudomonas species is a group of ubiquitous root colonizing gram-negative bacteria, which are well known for their biological control activity against many soilborne pathogens. Soilborne pathogens are responsible for a large loss of crop yield worldwide and…
Title: Physical properties of ultrafine-grained magnesium based alloys prepared by various severe plastic deformation techniques Author: Jitka Stráská Department / Institute: Department of Physics of Materials Supervisor of the doctoral thesis: Doc. RNDr. Miloš Janeček, CSc. Abstract: The objective of the doctoral the…
In contrast to carbon, which forms long polymeric chains, all-nitrogen chains are very unstable. Here we found that nitrogen and hydrogen directly react at room temperature and pressures of about 35 GPa forming a mixture of nitrogen backbone oligomers - chains of single-bonded nitrogen atom with the rest of the bonds…
Abstract Not Provided
The ignition and subsequent burning of polyurethane foam based mattresses poses a significant danger to life and safety in North American homes. The development of fire models which can predict the full scale fire behavior of these mattresses using bench scale data would assist manufacturers and regulators to manage t…
Spin-labeling of molecules with paramagnetic ions is an important approach for determining molecular structure, however current ensemble techniques lack the sensitivity to detect few isolated spins. In this Letter, we demonstrate two-dimensional nanoscale imaging of paramagnetic gadolinium compounds using scanning rel…
In this thesis, we focused on the understanding of the synthesis and texturization processes of hydrophobic and (super)hydrophobic fluorinated surfaces by atmospheric plasmas. First, we focused on the surface modifications of a model surface, the polytetrafluoroethylene (PTFE), by the post-discharge of a radio-frequen…