Hysteresis Curve
Mostrando 1-12 de 34 artigos, teses e dissertações.
-
1. MATHEMATICAL MODELING AND HYSTERESIS OF SORPTION ISOTHERMS FOR PADDY RICE GRAINS
ABSTRACT Knowledge on sorption isotherms is important for predicting drying and storage processes of a product. A sorption isotherm can be generated from two processes: desorption and adsorption. The lag between these two curves is called hysteresis. Static method was used to obtain the equilibrium moisture content of paddy rice grains, in different temperat
Eng. Agríc.. Publicado em: 12/08/2019
-
2. An Improved Method for Acquisition of the Parameters of Jiles-Atherton Hysteresis Scalar Model Using Integral Calculus
Abstract An accurate modeling of materials is essential to obtain reliable results in fields calculation. The Jiles-Atherton approach is widely used for modeling the magnetic hysteresis and depends on its set of five parameters to properly represent material. In this article is proposed an original methodology for obtaining this set of parameters avoiding th
J. Microw. Optoelectron. Electromagn. Appl.. Publicado em: 2017-03
-
3. Influence of Milling Time During the Mechanical Alloying Process on the Properties of Fe-3Si-0.75P Alloy
AbstractIn this study the soft magnetic alloy Fe-3Si-0.75P (wt%) was obtained by mechanical alloying through powder metallurgy. The processing included the formulation of metallic powder, wet milling for 1 h, 3 h, 6h and 9 h, in an attritor mill using alcohol P.A. as a lubricant. Cold compaction was then performed in a floating die under 600 MPa pressure and
Mat. Res.. Publicado em: 2015-10
-
4. Anomalous loss hysteresis loop
This paper discusses the anomalous loss behavior in two electrical steels types. Starting from a non oriented electrical steel coil, three groups of samples with different grain sizes were produced. Grain oriented steel samples were produced from a commercially available material. The experimental procedure was performed by means of magnetic properties measu
Mat. Res.. Publicado em: 28/02/2014
-
5. Análise por meio da técnica FORC, do efeito da histerese a alta freqüência no fenômeno da GMI / Analysis of the hysteretic effect on the high frequency GMI phenomenon by means of FORC technique
Este trabalho visa estudar o comportamento histerético, observado a baixos campos magnéticos, do fenômeno da magnetoimpedância gigante (GMI) em fitas amorfas a base de CoFeSiB com anisotropia magnética transversal. O fenômeno da GMI consiste na variação da impedância elétrica (aproximadamente do 100%) de uma amostra magnética mole quando submetida
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 15/12/2011
-
6. Interaction fields evaluation in fine particle systems
A computer simulation model for estimation of the interaction fields in fine particle systems has been developed. The method uses the experimental 8Mα(H) plot, constructed from the Fourier description of the initial magnetization curve and the hysteresis loop, and the 8M(H) plot, obtained from the remanence curves. The dependencies of the interaction fields
Publicado em: 2011
-
7. Caracterização magnética de aço com a superfície endurecida
Neste trabalho foram investigadas as propriedades magnéticas (curva de histerese e ruído Barkhausen) de alguns aços (ABNT 1045, 1050 e 1548) cujas superfícies foram endurecidas por indução. O objetivo era de desenvolver um ensaio não-destrutivo para determinar a espessura da camada endurecida, assim evitando a necessidade de realizar medidas (destruti
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/12/2010
-
8. Comportamento hidráulico de um perfil de solo não saturado de Aparecida de Goiânia-GO / Hydraulic behavior of an unsaturated soil profile of Aparecida de Goiania-GO
Um estudo do comportamento hidráulico de um perfil de solo tropical e não saturado de Aparecida de Goiânia-GO é apresentado nesta dissertação. O principal objetivo desta pesquisa foi contribuir para o entendimento das propriedades hidráulicas do solo, com especial ênfase na curva característica do solo e na sua histerese. O trabalho teve seu enfoque
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 30/04/2010
-
9. Comportamento hidráulico de um perfil de solo não saturado de Aparecida de Goiânia-GO / Hydraulic behavior of an unsaturated soil profile of Aparecida de Goiania-GO
The hydraulic behavior of a tropical and unsaturated soil profile of Aparecida de Goiânia-GO is presented. The main objective of this research was to contribute to the understanding of hydraulic properties of a tropical soil, with special emphasis on the soil-water characteristic curves and its hysteresis. The research work done was divided into two main pa
Publicado em: 2010
-
10. Perdas em ferritas de manganês zinco: o papel da sinterização e de parâmetros microestruturais. / Magnetic losses in maganese zinc ferrites: the role of sinterization and microstructural parameters.
O uso das ferritas de manganês zinco em fontes de potência de carregadores de bateria vem crescendo nos últimos anos, devido a suas baixas perdas magnéticas em induções da ordem de 0,2 T. Estas ferritas pertencem à categoria de ferritas moles, são óxidos ferrimagnéticos, policristalinos com estrutura cúbica tipo espinélio. Pós desse material for
Publicado em: 2010
-
11. Microssensores magnéticos tipo fluxgate planar utilizando ligas de NiFe eletrodepositadas / Planar microfluxgates using NiFe eletrodeposited cores.
This work present the development of fluxgate magnetic field sensors based on planar technology. The material for the core of the device is based on early works that determined the best NiFe electrodeposition parameters for this application. Functional devices were created proving the usability of the alloy. Also 4 new layouts were proposed in order to build
Publicado em: 2010
-
12. Curvas de retenção de agua de um solo coluvionar de Campinas obtidas mediante tecnicas de laboratorio e de campo / Soil water characteristic curve of a colluvial soil determined by techniques laboratory and field
This research focuses in to determine the relationship of moisture content (or degree of saturation) versus the value of the suction matrix, known as soil water characteristic curve (SWCC), to the soil surface layer of the Field Experimental of Soil Mechanics and Foundation of UNICAMP. This profile consists of colluvial, lateritic, porous, on condition unsat
Publicado em: 2008