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magnetic leakage testing

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Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003233
EISBN: 978-1-62708-199-3
... prepared by tempering at different temperatures. The grain size (ASTM No. 7) was the same for all four specimens used in the tests. Other data show that grain size has little effect on hysteretic behavior for the classes of alloys studied. The flaw leakage field can be detected using magnetic field...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003232
EISBN: 978-1-62708-199-3
... material or part being tested is magnetized, discontinuities that lie in a direction generally transverse to the direction of the magnetic field cause a leakage field to form at and above the surface of the part. The presence of the leakage field, and, therefore, the presence of the discontinuity, is...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003228
EISBN: 978-1-62708-199-3
... Abstract This article reviews nondestructive testing (NDT) and inspection techniques, namely liquid penetrant, magnetic particle, ultrasonics, X-ray, eddy current, visual and radiography that are commonly used to detect and evaluate flaws or leaks in an engineering system. This article compares...
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
... 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: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006468
EISBN: 978-1-62708-190-0
... materials. It depends on the fact that when the material or part under test is magnetized, magnetic discontinuities that lie in a direction generally transverse to the direction of the magnetic field will cause a leakage field to be formed at and above the surface of the part. The presence of this leakage...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002475
EISBN: 978-1-62708-194-8
... Abstract This article presents an overview of the electric and magnetic parameters and discusses the significance of these parameters for electronic applications. It describes the components of analog and digital electronic circuits. The article discusses the augmenting technologies: magnetic...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005858
EISBN: 978-1-62708-167-2
... protection system adopted for the frequency range of 50 Hz to 10 MHz. arc welding electrical field health hazards magnetic field radiation emission An electric field is created as soon as a conductor is energized, while a magnetic field appears only during a passage of an electric current...
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
... Scanning Electron Microscopy—A Photo Essay , J. Test. Eval., Vol 3 , Jan 1975 , p 75 – 78 127. Zwilling G. , Observation of Magnetic Domains in the Scanning Electron Microscope , Pract. Metallogr., Vol 11 , 1974 , p 716 – 727 128. Yamamoto T. et al. , Observation of...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006441
EISBN: 978-1-62708-190-0
... , 2002 , p 303 – 310 10.1115/1.1491580 6. Wagner R. , Goncalves O. , Demma A. , and Lowe M.J.S. , Guided Wave Testing Performance Studies: Comparison with Ultrasonic and Magnetic Flux Leakage Pigs , Insight , Vol 55 , 2013 , p 187 – 196 10.1784/insi.2012.55.4.187...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003026
EISBN: 978-1-62708-200-6
... sample in a humid environment (typically, 85 °C, or 185 °F, at 85% relative humidity). To pass the test, leakage current must remain below a certain threshold, and electrode continuity must be maintained. The THB test duration ranges from 24 to more than 1000 h. Testing times are sometimes reduced by...
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
... test material can be magnetized. This method depends on the flaw disrupting the magnetic flux generated along the surface of the weld by a permanent magnet or electromagnets, or by electric-current-carrying electrodes and cables. Flux leakage from the surface creates magnetic poles, which attract the...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... economy are well documented. For example, the importance of investigating failures was vividly illustrated in the pioneering efforts of the Wright Brothers in developing self-propelled flight. In fact, while Wilbur was traveling in France in 1908, Orville was conducting flight tests for the U.S. Army...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006442
EISBN: 978-1-62708-190-0
... Abstract This article discusses the principles and limitations of micromagnetic techniques, namely, magnetic Barkhausen noise (MBN) and magnetoacoustic emission (MAE). It also discusses various factors limiting the establishment of acceptance criteria for test components as they pertain to the...
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: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002363
EISBN: 978-1-62708-193-1
... methods, such as magnetic Barkhausen, magnetoacoustic emissions, and magnetic flux leakage, are well detailed in the article “Magnetic Field Testing” in ASM Handbook , Volume 17, Nondestructive Evaluation and Quality Control. These methods have been used to detect cracks or flaws in ferromagnetic...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006449
EISBN: 978-1-62708-190-0
.... Tubular products are inspected using a variety of nondestructive methods during production and during their service to ensure quality. Nondestructive testing (NDT) methods include most of the methods discussed in this Volume, namely electromagnetic inspection techniques (i.e., magnetic flux-leakage, Hall...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005355
EISBN: 978-1-62708-187-0
... penetrant inspection, pressure testing, radiographic inspection, magnetic particle inspection, and ultrasonic inspection. castings blast cleaning cleaning finishing flame cutting grinding radiographic inspection inspection liquid penetrant inspection magnetic particle inspection ultrasonic...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006467
EISBN: 978-1-62708-190-0
.... Matsubara N. , Yamaguchi H. , Hiroshima T. , Sakamoto T. , and Matsumoto S. , Nondestructive Testing of Cold Drawn Wires and Cold Forged Products , Wire J. Int. , March 1986 2. Wong L.C. , Test Parameters of Wet Magnetic Particle Inspection of Steel Billets , Mater...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003062
EISBN: 978-1-62708-200-6
... Abstract Ceramic materials serve important insulative, capacitive, conductive, resistive, sensor, electrooptic, and magnetic functions in a wide variety of electrical and electronic circuitry. This article focuses on various applications of advanced ceramics in both electric power and...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005516
EISBN: 978-1-62708-197-9
... frequency selection. It discusses three modes of heat transfer: conduction, convection, and radiation, in induction heating. The article describes the factors affected by a distortion of the magnetic field at the coil end through a schematic illustration of distribution of three magnetic force components...