Category Archive: CV

Mar 18

FMR Effect on Magnetic ribbon

Sorry, this entry is only available in Persian.

Permanent link to this article: http://hamid-eftekhari.ir/en/fmr-effect-on-magnetic-ribbon/

Feb 03

(فارسی) پایان‌نامه کارشناسی ارشد

Sorry, this entry is only available in Persian.

Permanent link to this article: http://hamid-eftekhari.ir/en/gd/

Sep 13

The inspection of magnetic flux leakage from metal surface cracks by magneto-optical sensors

Abstract We investigated the feasibility of using magneto-optical sensors for measuring the magnetic leakage fields in non-destructive evaluation. We used magneto-optical garnet thin films as a sensor and the effect of crack dimension on the sensor’s response were investigated via a simple Faraday rotation technique. Our results show that the sensor signal displays a linear …

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Permanent link to this article: http://hamid-eftekhari.ir/en/english-the-inspection-of-magnetic-flux-leakage-from-metal-surface-cracks-by-magneto-optical-sensors/

Sep 13

Double core giant magneto-impedance sensors for the inspection of magnetic flux leakage from metal surface cracks

Abstract Magnetic flux leakage inspection is one of the most common nondestructive techniques used to detect crack-like defects in ferromagnetic materials. In order to improve the accuracy and reliability of crack detection, sensors based on the giant magneto-impedance (GMI) effect are suitable candidates for the magnetic sensors used in MFL detection systems. In this paper, …

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Permanent link to this article: http://hamid-eftekhari.ir/en/double-core-giant-magneto-impedance-sensors-for-the-inspection-of-magnetic-flux-leakage-from-metal-surface-cracks/

Sep 13

Investigation of frequency effect on temperature dependence of Giant magnetoimpedance in magnetic amorphous Co-based ribbon

Highly sensitive magnetic field sensors have been growing rapidly for a wide variety of applications. In practical point of view, temperature stability at different frequency is one of the essential characteristics of sensors. Therefore the effect of temperature on Giant magneto impedance response of magnetic amorphous Co-based ribbon in 250KHz and1 MHz frequencies by using …

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Permanent link to this article: http://hamid-eftekhari.ir/en/investigation-of-frequency-effect-on-temperature-dependence-of-giant-magnetoimpedance-in-magnetic-amorphous-co-based-ribbon/

Sep 13

(فارسی) تصویربرداری مغناطیسی خراش های میکرومتری زیر سطحی با استفاده از اثرمگنتواپتیکی فارادی

Sorry, this entry is only available in Persian.

Permanent link to this article: http://hamid-eftekhari.ir/en/micro-ndt-2/

Sep 13

deposition under high magnetic

Permanent link to this article: http://hamid-eftekhari.ir/en/deposition-under-high-magnetic/

Sep 13

Magnetic shielding simulation in high magnetic permeability layers

Abstract Ultra low magnetic field measurement have significant role in various industry like medical diagnostic technology. In this regard using static magnetic field shielding compartment is a common method of reduction of unwanted magnetic field in this equipment. Permeability of material, the geometry of chamber and the use of multiple magnetic layers are important factors …

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Permanent link to this article: http://hamid-eftekhari.ir/en/magnetic-shielding-simulation-in-high-magnetic-permeability-layers/

Sep 13

The magnetic susceptibility measurement of Garnet thin film using the magnetic mutual inductance

Since the magnetic thin films widely used in various industries, the behavior of these layers and their magnetic susceptibility measurement is very important. One of the best ways of measuring susceptibility, is the mutual inductance method. In this paper by designing a susceptometer system based on this method, the magnetic susceptibility of a Garnet thin …

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Permanent link to this article: http://hamid-eftekhari.ir/en/the-magnetic-susceptibility-measurement-of-garnet-thin-film-using-the-magnetic-mutual-inductance/

Sep 13

Effect of adjacent cracks geometry in magnetic component on distinguishing them based on Magnetic Flux Leakage technique

In regards of developing industries using metal, evaluation on integrity of metal structures is of particular importance. Among the Non-destructive Testing (NDT) techniques, Magnetic Flux Leakage (MFL) is of prevalent methods in crack detection of magnetic metal structures. Presence of nearby cracks decreases accuracy of this method in crack characterization. In this research, we investigated …

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Permanent link to this article: http://hamid-eftekhari.ir/en/effect-of-adjacent-cracks-geometry-in-magnetic-component-on-distinguishing-them-based-on-magnetic-flux-leakage-technique/

Sep 13

(فارسی) تصویربرداری ناکاملی‌های میکرومتری سطحی با استفاده از اثرمگنتواپتیکی فارادی

Sorry, this entry is only available in Persian.

Permanent link to this article: http://hamid-eftekhari.ir/en/micro-crack-mfl/

Sep 13

sub surface corrosion detection by using of Giant magneto impedance

Permanent link to this article: http://hamid-eftekhari.ir/en/sub-surface-corrosion-detection-by-using-of-giant-magneto-impedance/

Sep 13

Surface imaging by magneto optical Kerr effect

Abstract The magnetic imaging of oil pipelines and tanks is one of the most used techniques for detecting surface cracks in oil and gas equipment. The type of the magnetic sensor used in this method is so important. Because of the great properties of magneto optical Kerr effect sensors, in this paper, these sensors have …

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Permanent link to this article: http://hamid-eftekhari.ir/en/surface-defect-imaging-by-magneto-optical-kerr-effect/

Sep 13

Nondestructive magnetic crack detection by means of magneto-optical sensor

Abstract Abstract- Nondestructive testing has been subjected of intense for technology in the last decades. We investigated the possibility of non destructive magnetic testing by means of magneto-optical sensors. For this purpose, we used the Garnet thin film as magneo-optical sensor and Faraday rotation setup.

Permanent link to this article: http://hamid-eftekhari.ir/en/nondestructive-magnetic-crack-detection-by-means-of-magneto-optical-sensor/

Sep 13

NDT based on magneto impedance effect

abstract Recently, Giant MagnetoImpedance based sensors have focused significant attention for industrial application especially in nondestructive metal testing. In this paper, for magnetic flux leakage testing based on giant magneto impedance effect, flux leakage distribution in vicinity of crack have been measured using Co-based amorphous wire as a core of sensor. Cracked region of sample …

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Permanent link to this article: http://hamid-eftekhari.ir/en/ndt-based-on-magneto-impedance-effect/

Sep 13

Design of a double core linear magnetometer based on asymmetric magnetoimpedance effect in nanostructured Finemet ribbons

Permanent link to this article: http://hamid-eftekhari.ir/en/design-of-a-double-core-linear-magnetometer-based-on-asymmetric-magnetoimpedance-effect-in-nanostructured-finemet-ribbons/

Sep 13

Effect of microwave annealing on the structure and magnetic properties of Co-based amorphous ribbons

  Abstract We investigated the structure and magnetic properties of CoFeSiB amorphous ribbons in the presence of microwave emission. Samples have been emitted onto in the microwave cavity with working frequency of 2.45 GHz at different times of emission. Structure and surface properties of samples emitted to have been investigated by X-ray diffraction and Atomic …

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Permanent link to this article: http://hamid-eftekhari.ir/en/effect-of-microwave-annealing-on-the-structure-and-magnetic-properties-of-co-based-amorphous-ribbons/

Sep 12

Imaging metal surface crack with giant magnetoimpedance sensors

Permanent link to this article: http://hamid-eftekhari.ir/en/imaging-metal-surface-crack-with-giant-magnetiimpedance-sensors/