Materials Literature
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So far we have considered that resistances, leakage and magnetization inductances are invariable with load. In reality, the magnetization current Im varies only slightly from no-load to full load (from zero slip to rated slip Sn ≈ 0.01 – 0.06), so the magnetization inductance L1m varies little in such conditions. Howe…
Chapter Overview This chapter starts by reviewing a number of shape measures (or features) that are usually adopted for shape characterization and classification and proceeds by covering several complexity descriptors, including the fractal dimension and curvature-based measures. The chapter concludes by presenting Fo…
Most small power (generally below 2 kW) induction machines have to operate with single-phase a.c. power supplies that are readily available in homes, and remote rural areas. When power electronics converters are used three phase a.c. output is produced and thus three phase induction motors may still be used. However,…
The effects discussed in this chapter are twofold in nature. One group (multiple scattering, time reversal, and air-coupled ultrasonics) are part of traditional ultrasonics, but recent advances have given them topical interest. The other group (picosecond ultrasonics and resonant ultrasound spectroscopy) are relativel…
Cavitation, the rupture of liquids and its associated effects, is a much more general phenomenon than that caused by the propagation of an intense ultrasonic wave in a liquid. It can be engendered hydrodynamically (ship’s propellers, turbines, etc.), by absorption of a laser beam, or by the passage of elementary parti…
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International audience
We investigated the plasmonic modes in a two-dimensional quasicrystalline array of metal nanoparticles. The polarization of the modes is in the array plane. A simplified eigen-decomposition method is presented with the help of rotational symmetry. Two kinds of anti-phase ring modes with radial and tangential polarizat…
Abstract : The purpose of this ARSAG document is to provide a consistent and common communication link of technical terms and definitions and their use regarding aircraft aerial refueling fuel pressure and flowing systems in both steady state and dynamic conditions. It is intended to assist in the technical assessment…
Author phone number:+40-56-155452…………… Losses in induction machines occur in windings, magnetic cores, besides mechanical friction and windage losses. They determine the efficiency of energy conversion in the machine and the cooling system that is required to keep the temperatures under control. In the design stages,…
A computational model for studying the metal and nanotube interface layer properties in Carbon nanotube field effect transistors (CNT-FETs) has been carried out. The CNT-FETs can be fabricated both with Ohmic and Schottky contacts. Here we have focused on Schottky barrier which operate by modulating the transmission c…
Reactive blends of polypropylene and unsaturated polyester with different compositions were prepared by melt processing using dicumyl peroxide (DCP) as initiator in a plasticoder. Rheological Characteristics of the blends were studied as a function of unsaturated polyester concentration over a range of strain rate. Th…
In this paper, determination of material balance for reciprocal salt pair systems is considered and special case of KNO3 production is solved. A scheme is presented for calculation of material balance which is based on the conservation of ions and water. Material balance requires equilibrium composition and phase diag…
ÖZET : Bu çalışma, bazı yöntemsel faktörlerin yapay toprak briketlerininkırılma değerinin ölçümü üzerine etkilerini ve bazı toprak özellikleri ile kırılma değeriarasındaki ilişkileri incelemek amacıyla yapılmıştır.Çalışmada, Atatürk Üniversitesi Ziraat Fakültesi Ziraat işletmesi arazisinin 12farklı mahallinden 0-20 cm…
We propose a model describing the liquid-vapour phase transition according to a phase-field approach. The model takes up a setting proposed by the second author, where a phase field is introduced whose equilibrium values 0 and 1 are associated to the liquid and vapour phases. The phase field obeys Ginzburg-Landau equa…
As polymer matrix composites are quickly becoming a viable alternative in civil applications where accurate structural design is quite complex, a good understanding of the behaviour of such materials is necessary. In any civil application, both environmental and design conditions need to be assessed and depending on t…
ÖZET : Bu araştırmada İğdır Ovası tuzlu-sodyumlu topraklarının bazı fizikselve kimyasal özelliklerin agregasyon üzerine etkileri incelenmiştir, İğdır ovasınıtemsilen 30 adet yüzey toprağı (0-30 cm) alınmış ve araştırma materyali olarakdeğerlendirilmiştir.Araştırma topraklarında agregasyonla; kil, porozite, elekriksel…
The low temperature water gas shift activities of Au-CeO2/Al2O3 catalysts were studied in this work. The catalysts were prepared by impregnation of CeO2 on alumina support followed by the homogeneous deposition precipitation of Au on CeO2/Al2O3. The catalysts were tested in a microflow reaction system. It was found th…
We present Monte Carlo based calculations of electron transport in InAs, AlAs and InAlAs based devices. The calculations are performed using a three valleys ensemble Monte Carlo model that includes numerical formulations of the phonon scattering rates and ionized impurity scattering rates. Calculations are made for th…
The aim of performed research was to investigate textile materials bending rigidity parameters BKESF and BFAST definedat low-stress loads by KES-F (Kawabata Evaluation System for Fabrics) and FAST (Fabric Assurance by SimpleTesting) testers, respectively and to set the relationship between these two bending rigidity p…