Materials Literature
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Annealing at a temperature of 873 K is shown to irreversibly influence the near-infrared (NIR) luminescence decay kinetics of bismuth doped silica optical fibers, pumped at the 808 nm wavelength. We found that annealing leads to quenching of the NIR luminescence peaking at a wavelength of 1420 nm. Our results support…
This thesis presents research on the corrosion properties and effects of heat treatment on austenitic stainless steel coatings produced by the cold gas dynamic spray process on 316L stainless steel substrates. Previous work on the use of the low-pressure cold spray process to spray austenitic stainless steel was repro…
Abstract Boundary conditions for the solid–liquid interface of the solidifying pure melt have been derived. In the derivation the model of Gibbs interface is used. The boundary conditions include both the state quantities of bulk phases are taken at the interface and the quantities characterizing interfacial surface s…
Nanomaterials (NMs) and nanoparticles (NPs) have been studied intensively for almost two decades and still all the characteristics that might be beneficial or harmful are not explored. Although many studies have investigated the mechanisms of action of NPs in cells, results are not fully understood and in many cases a…
Magnetic domain behaviors directly characterize the macroscopic properties of ferromagnetic material, the understanding of domain wall dynamic is a way to explain the characteristics of magnetization process and performance of material. This paper presents the repeatability study of domain wall behavior for stress cha…
The W monoblock is one of the key components in divertors of the International Thermonuclear Experimental Reactor (ITER). During fabrication, it is prone to interlayer delamination posing a severe threat to integrity of diverters and safe operation of ITER. This opens up the research of efficient nondestructive evalua…
For studying the influence of notch characteristics on magnetic memory signals, static tension tests on Q235 steel were carried out. The normal component of magnetic flux leakage, Hp(y), were measured by metal magnetic memory testing, and the relationship between the magnetic field values at a fixed point with stress…
ΕΙΣΑΓΩΓΗ Η ενδομήτρια καθυστέρηση της αύξησης (IUGR) έχει συσχετιστεί με μεταβολή της γεωμετρίας των καρδιακών κοιλοτήτων, μειωμένη μυοκαρδιακή απόδοση και πάχυνση του τοιχώματος των μεγάλων αγγείων. Αυτές οι διαταραχές έχουν τεκμηριωθεί επαρκώς σε έμβρυα με υπολειπόμενη ανάπτυξη, ενώ πρόσφατες μελέτες υποστηρίζουν τη…
Abstract The grain scale of materials is an area still open for investigations within the field of materials science. The most helpful tools to perform this type of research are diffraction methods. Within the research project presented in this paper two experiments were carried out employing two different types of ra…
Ao longo dos anos recentes, a atividade desenvolvida nas áreas de engenharia tem-se apoiado cada vez mais na utilização de ferramentas de software apropriadas. Estas ferramentas são muitas vezes desenvolvidas especificamente para dar resposta a um problema muito bem definido, faltando-lhes a capacidade para resolver d…
Thermal conductivity is important in material science, research, electronics and related fields, especially where high operating temperatures are achieved. This review paper regards with effect of different parameters on thermal conductivity like temperature influence on cellular metal, specific gravity, viscosity of…
This work aims to evaluate the thermal and dynamic mechanical properties of bagasse/glass fiber/polypropylene hybrid composites. Composites were prepared by the melt compounding method and their properties were characterized by differential scanning calorimetry (DSC) and dynamic mechanical analysis (DMA). DSC results…
© 2016, European Conference on Composite Materials, ECCM. All rights reserved. This work is a numerical study to evaluate the influence of carbon nanotubes (CNTs) on the stress build-up in and around a broken fibre in a single carbon fibre/epoxy composite. The study is performed with the help of a two-scale 3D finite…
En premier lieu, je souhaite remercier mon directeur et mon co-directeur de recherche, j'ai nommé les professeurs Marie-Claude Heuzey et Michel Huneault.Leurs forces de suggestion et leurs pédagogies m'ont permis de mener à bien ce projet.Ce fut un réel plaisir de travailler sous la direction de professeurs aussi expé…
In this study, a three-dimensional finite element (FE) model for armchair, zigzag and chiral single-walled carbon nanotubes (SWCNTs) is proposed. To create the FE models, nodes are placed at the locations of carbon atoms and the bonds between them are modeled using three-dimensional elastic beam elements. The FE model…
We describe the red phosphorescence exhibited by a class of structurally simple benzo[2,1,3]thiadiazoles at room temperature. The photophysical properties of these molecules in deoxygenated cyclohexane, including their absorption spectra, steady-state photoluminescence and excitation spectra, and phosphorescence lifet…
Con el fin de generar una nueva fibra dietética antioxidante y prebiótica, el ácido gálico (AG) se injertó en inulina nativa por el método de radicales libres generados mediante el par Redox peróxido de hidrógeno/ácido ascórbico (H2O2/AA). A través de Resonancia Paramagnética Electrónica (EPR), se evaluaron diversas r…
خلاصه مساله: امروزه مصرف كنندگان مواد غذايي تمایل بیشتری نسبت به مصرف غذاهایی که عاری از مواد شیمیایی هستند و در آنها موادی با منشاء طبیعی برای نیل به اهداف خاصی به کار رفته است از خود نشان می دهند به همین دلیل اخیرا مطالعات زیادی روی جایگزین کردن مواد طبیعی به عنوان نگهدارنده در غذاهای مختلف صورت گرفته است از جمله تر…
Abstract : The objective of this project as modified and approved by DTRA is to develop a new scientific framework and technical capability for the computational analyses and design of the thermal mechanical behavior of energetic composite materials under dynamic impact loading. The model material system polymer bonde…
This study aims at investigation of the hydrogen damage after dissolution annealing and two-stage aging in aluminum 7075 alloy. Dissolution annealing was performed at 500 to 575 °C for duration of 1 to 20 hours. The first stage of two-stage aging was performed at 180, 200 and 220 °C for 30 minutes. The second stage wa…