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magnetic current imaging

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Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006336
EISBN: 978-1-62708-179-5
..., or number of these anomalies exceeds the maximum allowed by the purchaser. The nondestructive methods include visual inspection, dimensional inspection, liquid penetrant inspection, magnetic-particle inspection, eddy-current inspection, radiographic inspection, ultrasonic inspection, resonant testing...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001473
EISBN: 978-1-62708-173-3
... be segregated in terms of those that provide images of the flaw (visual inspection and penetrant, magnetic particle, and radiographic testing) and those that provide signals from the flaw (ultrasonic and eddy-current testing). The nature of the flaw can be more easily assessed from images than from signals...
Image
Published: 01 December 2004
Fig. 32 A ray diagram for the Fresnel imaging of magnetic domains using a transmission electron microscope. (a) When the current to the objective lens is increased above the in-focus condition, the image becomes overfocused and the electrons are deflected toward and away from the domain walls More
Image
Published: 01 January 1990
Fig. 1 Plot of critical current density versus magnetic flux density to compare properties of powder-in-tube process oxide-base superconductors with that of conventional superconductors. MRI, magnetic resonance imaging; SSC, superconducting supercollider More
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006468
EISBN: 978-1-62708-190-0
... in establishing a set of procedures for the magnetic-particle inspection of a specific part: type of current, type of magnetic particles, method of magnetization, direction of magnetization, magnitude of applied current, and equipment. It concludes with a discussion on demagnetization after magnetic-particle...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006445
EISBN: 978-1-62708-190-0
..., and gamma-ray density determination. The article also discusses the methods for automated nondestructive testing of pressed and sintered PM parts: acoustic methods-resonance testing, eddy current testing, magnetic bridge comparator testing, ultrasonic techniques, radiographic techniques, gamma-ray density...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005616
EISBN: 978-1-62708-174-0
... on various types of flaws resulting from solid-state welding processes. eddy current method flaws nondestructive evaluation radiography solid-state welding solid-state welds ultrasound method A NUMBER OF NONDESTRUCTIVE EVALUATION (NDE) methods, such as visual, liquid penetrant, magnetic...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006477
EISBN: 978-1-62708-190-0
... of the methods performed on various types of flaws resulting from solid-state welding processes. eddy current nondestructive evaluation solid-state welding ultrasound testing X-ray radiography A NUMBER OF NONDESTRUCTIVE EVALUATION (NDE) methods, such as visual, liquid penetrant, magnetic particle...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002363
EISBN: 978-1-62708-193-1
... Eddy current 0.1 Optical microscope 0.1–0.5 Electric potential 0.1–0.5 Magnetic property 0.076 Ultrasonics 0.050 Gel electrode imaging 0.030 Liquid penetrant 0.025–0.25 Compliance 0.01 Scanning electron microscope 0.001 Transmission electron microscope 0.0001...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
... of detecting surface discontinuities by magnetic-particle inspection, liquid penetrant inspection, and eddy-current testing. The major NDE methods for internal (volumetric) inspection in failure analysis also are described. eddy-current testing liquid penetrant inspection magnetic-particle inspection...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005841
EISBN: 978-1-62708-167-2
... pancake coils. Figure 14 shows the direction of current flow in a butterfly coil and the resulting magnetic field. The coil was modeled heating a copper plate. The top image in Fig. 14 shows the effect of adding a magnetic flux concentrator over the center turns. Figure 15 shows the power density...
Image
Published: 01 August 2018
Fig. 1 The left side illustrates a current, I , through a coil of wires placed a small distance above the metal surface, generating a mirror-image surface current density, J . As described in Ref 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , the interaction of this induced current with the bias More
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003788
EISBN: 978-1-62708-177-1
.... The article also illustrates the microstructure of different types of soft magnetic material and permanent magnets. bitter technique domain imaging Faraday method Lorentz transmission electron microscopy magnetic force microscopy magnetic materials magnetism magneto-optical Kerr method materials...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001114
EISBN: 978-1-62708-162-7
... to the conventional superconductors Nb-Ti and Nb 3 Sn shown in Fig. 1 at 4.2 K. The critical current density requirements for two of the most prominent large-scale applications are also noted: magnetic resonance imaging (MRI) magnets and the superconducting supercollider (SSC). Both of these devices require current...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005544
EISBN: 978-1-62708-197-9
... is critical. It calculates force, torque, displacement current, flux linkage, induced voltage, power, and impedance and is used for applications such as magnetic resonance imaging, nondestructive testing systems, bus bars, charging fixtures, induction heating coils, magnetic recording heads, magnetic...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005857
EISBN: 978-1-62708-167-2
... inspection (in case one or more nonconforming products are found or C pk value is less than 1.33) Surface hardness Eddy current, magnetic, electrical 100% Case depth Ultrasonic, eddy current, magnetic, electrical 100% Microstructure Magnetic, eddy current, electrical 100% Pattern Visual...
Series: ASM Handbook
Volume: 2
Publisher: ASM International
Published: 01 January 1990
DOI: 10.31399/asm.hb.v02.a0001108
EISBN: 978-1-62708-162-7
... producing superconducting magnets. Few large laboratories are now without a superconducting magnet, whether used for physical property measurements, nuclear magnetic resonance (NMR) and other resonance experiments, or for investigations of superconductivity itself. Magnetic resonance imaging (MRI) magnets...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003755
EISBN: 978-1-62708-177-1
..., surface topography, crystal orientation, magnetic domains 50–1000 nm 30–1000 nm Specimen current No external detector necessary Complementary contrast to backscattered plus secondary electron signal Same as backscattered electrons Same as backscattered electrons Characteristic x-rays (primary...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005842
EISBN: 978-1-62708-167-2
..., and inductors for heating internal surfaces. It discusses the current density distribution and the skin effect, the proximity effect, and crack-propagation specifics. The article also describes selected properties of copper alloys, the electromagnetic edge effect of coil copper turn, and the effect of magnetic...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006633
EISBN: 978-1-62708-213-6
... (SPMs), have been developed. While the pure imaging capabilities of SPM techniques are dominated by the application of these methods at their early development stages, the physics of probe-sample interactions and the quantitative analyses of tribological, electronic, magnetic, biological, and chemical...