Materials Literature
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Flexible Polyurethane (PU) foam is generally used in seat cushions of automotive seating for comfort and supporting the occupants. However, due to the demand for more comfortable compartment; seat cushions are now designed for better riding comfort and acoustic absorption which linked to the damping of foam. Incorpora…
A fully coupled transient 3-dimensional multi-scale model has been developed to predict the evolution of dendritic growth in alloys. The motivation to use such a method is to both reduce computational costs and increase the size of the computational domain. The model consists of a mixture of finite volume and finite d…
Przedstawiono wyniki badań wpływu liczby procesów naprawy złączy spawanych na ich właściwości. Badaniom poddano po 5 złączy doczołowych ze stali P460NL1 oraz S355J2+N z blach o grubości 12 mm obejmujących stan po spawaniu oraz po 1, 2, 3 i 4 operacjach naprawy. Zastosowane procedury badawcze złączy odpowiadały warunko…
L’etude realisee au cours de cette these concerne la synthese d’oxydes d’actinides en fin de procede pour la refabrication de combustible nucleaire. Cette synthese est realisee par precipitation des chlorures d’actinides (III) solubilises en milieu sel fondu LiCl-CaCl2 (30-70%mol) a 700°C par bullage d’argon humide. L…
The SF6 gas insulation system has been improved by covering the electrode with a dielectric layer. To raise the reliability of this method, the authors evaluated the influence of charge accumulation of the coated electrode on the breakdown characteristics and directly measured the charge accumulation of the coated ele…
de fusibles ductiles travaillant en traction pour l'amélioration de l'efficacité des contreventements parasismiques en acier
Prosedur pengelasan kelihatannya sangat sederhana, tetapi sebenarnya di dalamnya banyak masalah yang pemecahannya memerlukan berbagai macam pengetahuan, oleh sebab itu pengelasan menjadi sangat penting, karena kesalahan dalam proses pengelasan dapat menyebabkan hasil pengelasan buruk yang dapat menyebabkan kerugian sa…
Through the emergence of photosynthetic living organisms on earth millions of years ago, there was an enrichment of molecular oxygen (O2) in the atmosphere. Oxidative phosphorylation is the chemical reaction which provides the biggest amount of energy in the form of ATP for the organism. It is also the main producer f…
Αντικείμενο της παρούσας διατριβής αποτελεί η μελέτη της ποιότητας, μέσω της διερεύνησης των μικροδομικών χαρακτηριστικών και των τριβολογικών ιδιοτήτων, μεταλλικών και κεραμικών επιστρωμάτων θερμικού ψεκασμού. Η ποιότητα των επιστρωμάτων θερμικού ψεκασμού εξαρτάται από πολλούς παράγοντες, που έχουν να κάνουν με τις σ…
We numerically and experimentally investigated a composite (metal-dielectric) metamaterial at millimeter wavelengths. Our proposed low cost metamaterial exhibits a negative refractive index around 85GHz, which makes it very promising for super-resolution applications in the millimeter band.
Introduction: Linear wave propagation through inhomogeneous structures of size R≫λ (Fig.1) is a computationally challenging problem, in particular when using finite element methods, due to the steep increase of the number of degrees of freedom as a function of R/λ. Fortunately, when the geometry of the problem possess…
In the above-named article [ibid., vol. 59, no. 10, pp. 3536-3543, Oct. 2011] errors occurred in (1), which are corrected here.
\nW artykule przedstawiono wyniki badań nieniszczących, metalograficznych oraz pomiary mikrotwardości złączy korpusu z żeliwa sferoidalnego spawanego laserowo. Na podstawie badań stwierdzono, że techniki spawania laserowego mogą być z powodzeniem stosowane w przemyśle motoryzacyjnym, ponieważ mogą zapewnić wysokie wym…
In order to reduce the torque ripple in interior permanent magnet (IPM) machine and obtain the precise calculation result of torque ripple simultaneously, a 1.5 kW IPM synchronous AC motor model with optimized rotor topology is built. The revised analytical expression of ripple torque is proposed and the reduction met…
It is highly desirable to combine ERETIC with the Klose correction, which frees spectra from disturbing eddy current effects. So far this was only possible when drawbacks in the fitting procedure where accepted. In our work we increased the usability of ERETIC by implementing an automatic phase correction and eddy cur…
This chapter recalls the basics of the formation mechanism, the associated processes and their areas of use. It also presents other types of small carbonaceous particles and their processing in order to obtain heterogeneous media via dispersion inside a matrix according to the desired application. The chapter, focuses…
Besides standard joining procedures in automotive industrya n wnber of a ltema ti ve solutions are used, based on specific industrialneeds.This article briefly presents the basic conditions that mustbe met by the automobiles of new generation and states the reasonsfor an in-depth change in the concepts of construction…
In this paper, we review the quantum mechanics of magnetic resonance imaging (MRI). We traverse its hierarchy of scales from the spin and orbital angular momentum of subatomic particles to the ensemble magnetization of tissue. And we review a number of modalities used in the assessment of acute ischemic stroke and tra…
Aluminum phosphate nanoparticles (AlPO 4 ) have been studied with disodium phosphate (Na 2 HPO 4 .7H 2 O), aluminum chloride (AlCl 3 .6H 2 O), and sodiumacetate (CH 3 COONa.3H 2 O) as main material. Preparation process was done by adding aluminum chloride/sodium acetate solution (AlCl 3 .6H 2 O/ CH 3 COONa.3H 2 O) at…
Abstract : In this presentation, structures were demonstrated to be reactive towards a variety of dichlorosilanes. Solubility of F-POSS compounds were shown to be influenced by chemical functionality. Functionality was shown to be influential on contact angle measurements. Scientists are currently working on other mon…