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magnetic current imaging

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110025
EISBN: 978-1-62708-247-1
...-destructive localization techniques. The techniques considered for advanced fault isolation are magnetic current imaging for shorts and opens; infrared thermography for electrical shorts; time-domain-reflectometry for shorts and opens; scanning acoustic microscopy; and 2D/3D X-Ray microscopy. The individual...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110010
EISBN: 978-1-62708-247-1
... optical inspection, X-ray inspection, scanning acoustic microscopy, infrared (IR) microscopy, and electrical verification. The article discusses various fault isolation techniques to tackle the wide array of failure signatures, namely IR lock-in thermography, magnetic current imaging, time domain...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720183
EISBN: 978-1-62708-305-8
... two small detector or pickup coils wound in opposite directions as mirror images of each other. An alternating current is supplied to the large transmitter coil to generate a magnetic field. If the transmitter coil is not in the vicinity of a conductor, the two detector coils detect the same field...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110111
EISBN: 978-1-62708-247-1
... Failure Analysis , Santa clara, CA , November 2001 . [4] Crepel O. , Descamps P. , Poirier P. , Desplants R. , Perdu P. , and Firiti A. . Magnetic current imaging techniques: Comparative case studies . In Proc. of the 30th Int’l Symp. on Testing and Failure Analysis...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170614
EISBN: 978-1-62708-297-6
..., and outboard motors; small and large direct current (dc) motors (including automotive motors); acoustic transducers; magnetic couplings; magnetic resonance imaging; magnetic focusing systems; ammeters and voltmeters; and watt-hour meters. Table 6 lists applications for permanent magnets in the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2007
DOI: 10.31399/asm.tb.pmsspmp.t52000131
EISBN: 978-1-62708-312-6
..., serves as the secondary coil. The primary coil is energized with a small electric current, which produces a magnetic field H (given by Eq 8.2 ). The induced magnetic field is detected by the secondary coil and is measured with a ballistic galvanometer or a flux meter. The applied magnetic field, H...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2015
DOI: 10.31399/asm.tb.piht2.t55050057
EISBN: 978-1-62708-311-9
... transverse, of the associated magnetic flux. It then discusses the factors that influence coil design and selection, including coupling efficiency, frequency, the number and spacing of turns, and the use of flux intensifiers. It also includes images and illustrations of various types of coils and coil...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720411
EISBN: 978-1-62708-305-8
... nondestructive inspection of weldments including visual inspection, liquid penetrant inspection, magnetic particle inspection, radiographic inspection, ultrasonic inspection, leak testing, and eddy current and electric current perturbation inspection. The chapter also describes the properties of brazing filler...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720293
EISBN: 978-1-62708-305-8
... inspection. Casting defects including porosity, oxide films, inclusions, hot tears, metal penetration, and surface defects are reviewed. Liquid penetrant inspection, magnetic particle inspection, eddy current inspection, radiographic inspection, ultrasonic inspection, and leak testing for castings are...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720393
EISBN: 978-1-62708-305-8
... evaluation methods to flaw detection in P/M parts. The nondestructive evaluation methods covered are mechanical proof testing, metallography, liquid penetrant crack detection, filtered particle crack detection, magnetic particle crack inspection, direct current resistivity testing, x-ray radiography...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720001
EISBN: 978-1-62708-305-8
... testing methods discussed are liquid penetrant inspection, magnetic particle inspection, eddy current inspection, radiographic inspection, and ultrasonic testing. chemical analysis coordinate measuring machines hardness testing machine vision metallography nondestructive testing tensile...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110413
EISBN: 978-1-62708-247-1
... imaging), and CIVA (charge-induced voltage alteration) are also difficult at variable pressure because the gas ionized by the electron beam alters the absorbed sample current. [12] The utility and unique capabilities of the scanning electron microscope will make it a mainstay in failure analysis for...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110461
EISBN: 978-1-62708-247-1
... scattering of electrons by heavy atomic weight tungsten. Phase contrast imaging is useful for measuring device features or identifying process defects that are sub-nanometer in dimensions. Most of current generation transmission electron microscopes equipped with a high resolution objective lens are...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110485
EISBN: 978-1-62708-247-1
.... , “ Magnetic Imaging by 'Force Microscopy’ with 1000Å Resolution ,” Appl. Phys. Lett. 50 ( 20 ) ( 1987 ), pp. 1455 - 1457 . 10.1063/1.97800 [19] Campbell A. N. et al. , “ Magnetic Force Microscopy/Current Contrast Imaging: A New Technique for Internal Current Probing of ICs ,” Microelectronic...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850165
EISBN: 978-1-62708-260-0
... Abstract This chapter explains how to achieve accurate, sharp delineation of the microstructure of metals using appropriate etching and contrasting techniques. It covers a variety of methods, including chemical etching, heat tinting, gas contrasting, vapor deposition, magnetic etching, ion...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130417
EISBN: 978-1-62708-284-6
... redistribution due to the proximity effect. By placing the conductor into the magnetic flux concentrator made of powder metals based on iron, nickel, cobalt, and other powder materials, it is possible to achieve a higher density of the magnetic field ( Fig. 23c ). Fig. 23 Current distribution in an...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060315
EISBN: 978-1-62708-261-7
...-strength low-alloy steels and stainless steels. Other uses include nose caps for hypersonic flight vehicles and superconductivity magnets for magnetic resonance imaging (MRI) machines, used in medical diagnosis. The properties of rhenium are generally similar to those of molybdenum and tungsten. Its...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110550
EISBN: 978-1-62708-247-1
... Proceedings , 2004 . [7] Choi D. , Kim Y. , Kim J and Kim H. , “ Advanced Non-Destructive Fault Isolation Techniques for PCB Substrates using Magnetic Current Imaging and Terahertz Time Domain Reflectometry ,” in ISTFA 2018: Conference Proceedings from the 44th International...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smfpa.t53500301
EISBN: 978-1-62708-317-1
... is energized by an alternating current. The magnetic flux resulting from this alternating current is coupled by the core to the secondary windings. Initially, when the core is positioned symmetrically with respect to the secondary windings, the voltage generated at the two secondary windings is the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.tb.msisep.t59220085
EISBN: 978-1-62708-259-4
.... As seen in earlier chapters of this book, conventional light microscopes are not able to produce focused images of surfaces with this feature. Some digital microscopes currently offer the ability of generating three-dimensional (3D) imaging and measuring by using image stacking and digital processing...