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magnetism

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Image
Published: 01 December 1992
Fig. 2 Magnetic-particle indication of the longitudinal split in sample 1. ∼ 1 2 ×. More
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Published: 01 December 1992
Fig. 2 View of the other striking surface of the hammer after magnetic particle testing. Note magnetic particle indications. More
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Published: 01 January 2002
Fig. 16 Stress-corrosion cracks in steel pipe weld. (a) Magnetic particle enhancement of cracks in the weld of an equalizer line elbow section. Cracks were localized in the weld and HAZs. (b) Cracks initiated on the inside surface and propagated through the weld in a multiple branching mode. More
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Published: 01 January 2002
Fig. 23 Macrograph showing a close-up view of the typical magnetic-particle indications observed on the disc side surfaces More
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Published: 01 January 2002
Fig. 1 This die of manganese oil-hardening steel cracked (highlighted by magnetic powder) at the sharp change of section in quenching. A fillet or even an undercut could have eliminated the failure. Differential hardening which leaves the fillet soft can also help as can the use of an air More
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Published: 01 January 2002
Fig. 19 Typical cracking found by fluorescent magnetic-particle inspection of the internal surface of a feedwater heater. More
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Published: 30 August 2021
Fig. 71 Magnetic-particle testing results from near fracture area 1. Arrows indicate crack locations More
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Published: 30 August 2021
Fig. 72 Magnetic-particle testing results from between fracture areas 2 and 3. Arrows indicate crack locations More
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Published: 30 August 2021
Fig. 73 Magnetic-particle testing results from near fracture area 3. Arrows indicate crack locations More
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Published: 30 August 2021
Fig. 26 Photograph of magnetic-particle inspection of pipe with crack colonies typical of stress-corrosion cracking (SCC) More
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Published: 30 August 2021
Fig. 31 Wet fluorescent magnetic-particle inspection photograph of outside pipe surface showing an SCC colony near the rupture area. Multiple similar colonies were observed both upstream and downstream of the rupture. More
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Published: 30 August 2021
Fig. 79 Typical cracking found by fluorescent magnetic-particle inspection of the internal surface of a feedwater heater More
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Published: 30 August 2021
Fig. 14 Cracking is shown by the red magnetic particles. The arrow identifies the “hump,” which occurs near the midpoint of the lug. More
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001356
EISBN: 978-1-62708-215-0
... stressed components in a power plant. To reduce any electrical losses, they are often made from austenitic, non-magnetic alloys. They are shrunk onto the generator shaft after winding, and require a high yield and tensile strength to resist the high shrink and rotational stresses encountered. A schematic...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001397
EISBN: 978-1-62708-235-8
..., a breakdown occurred due to bursting of the banding wires in several places. The wire, 0.064 in. diameter, was non-magnetic, being of the 18/8 Cr Ni type of austenitic stainless steel. Most of the fractures occurred in the immediate vicinity of the clips, as can be seen in Fig. 1 . Fig. 1 Failure...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0046242
EISBN: 978-1-62708-236-5
... in the gear teeth (found at visual inspection) was composed of the same material as the metal in the coupling. Beach marks and evidence of cold work, typical of fatigue failure, were found on the fracture surface. Chips remaining in the analysis cut were difficult to remove, indicating a strong magnetic field...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c0046238
EISBN: 978-1-62708-231-0
... the pins had been magnetic-particle inspected by inserting a probe into the longitudinal hole. Evidence found supports the conclusions that the knuckle pins failed by fatigue fracture. The circular cracks at the longitudinal holes were the result of improper technique in magnetic-particle inspection...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001516
EISBN: 978-1-62708-234-1
... in disk drives consists of a metal, glass, ceramic, or plastic substrate coated with a magnetic material. Data errors are classified as ‘soft’ or ‘hard’ depending on their correctability. Examination has shown that hard errors are the result of an abrasive wear process that begins with contact between...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001369
EISBN: 978-1-62708-215-0
...Abstract Abstract A crane long-travel worm drive shaft was found to be chipped during unpacking after delivery. Chemical analysis showed that the steel (EN36A with a case depth of 1 mm, or 0.04 inch did not meet specifications. Magnetic particle inspection revealed a crack on the side...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047710
EISBN: 978-1-62708-225-9
...Abstract Abstract A 9310 steel gear was found to be defective after a period of engine service. A linear crack approximately was discovered by routine magnetic-particle inspection of an electron beam welded joint that attached a hollow stub shaft to the web of the gear. The welding procedure...