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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0047508
EISBN: 978-1-62708-221-1
...Abstract Abstract A riveted 0.25% carbon steel oil-storage tank in Oklahoma was dismantled and reassembled in Minnesota by welding to form a storage tank for soybean oil. An opening was cut in the side of the tank to admit a front-end loader. A frame of heavy angle iron was welded to the tank...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0091853
EISBN: 978-1-62708-223-5
.... The mill consisted of a heavy gray cast iron frame, a gravity feeder port, a runner, and a heavy-duty motor. The frame and gravity feeder weighed over 200 kg (440 lb) and, in some areas, was over 25 mm (1 in.) thick. To obtain the operating speed of 200 rpm, a gear system was used to transmit the torque...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001151
EISBN: 978-1-62708-219-8
... aggravates the water ponding problem during a heavy rain storm. An examination of the fractured surface suggested that the weld failure which caused the girder collapse seemed to be a tensile overload fracture of a basically sound weld. Fig. 5 Holes enlarged by torch cutting to accommodate beam...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001765
EISBN: 978-1-62708-241-9
... the periphery of the tank. Fig. 1 (a) Topside of the bottom plate sample, cut from a location near the annular plate, in the as-received condition showing pit and holes. 1×. (b) Underside of the same bottom plate sample in the as-received condition showing heavy corrosion. 1×. Fig. 2...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001130
EISBN: 978-1-62708-214-3
...Abstract Abstract The failure during use of a seat on a heavy-duty swing set at an elementary school was investigated. The seat contained a perforated reinforcing sheet metal (galvanized type 430 stainless steel) insert covered by an elastomeric material. Specimens of the reinforcing sheet from...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001498
EISBN: 978-1-62708-218-1
... time.” Only the pinion head had been returned. The shaft portion had been torch-cut away. Chemical analysis along with the microstructure confirmed the specified material was SAE 43BV12 Ni-Cr-Mo alloy steel. The mode of failure was surface contact fatigue through the shear plane subsurface...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001093
EISBN: 978-1-62708-214-3
... plated per QQ-P-416 type II class 2 (23 h bake). Fractography The bolt head was cut through its centerline and the crack cross section was metallographically examined in a Zone 1 area to further explore whether failure was caused by hydrogen embrittlement (step cracking, no decarburization...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001113
EISBN: 978-1-62708-214-3
.... Circumstances Leading to Failure Specimen Selection Both plates exhibited cracks at the bottom-portion fillet-weld heat-affected zone (HAZ), or weld toe, of each diagonal and vertical angle brace ( Fig. 2 , 3 , 4 ). Microscopic observation at 30× revealed heavy rusting and evidence of primer paint...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001724
EISBN: 978-1-62708-234-1
..., there was considerable newspaper play on this coincidence. It may be said immediately that hydrogen, either light or heavy, had nothing to do with the generator failures. Rather they were undoubtedly caused by the fracture of one of the two heavy forged rings called “end bells” which confine the return loops...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001016
EISBN: 978-1-62708-236-5
... included a section of the ways and a heavy adjustable mechanism which normally rides on these ways. The weight of the broken section was estimated at several hundred pounds. There was no support for the broken piece beyond the point of breakage. The material was a commercial cast iron, and the largest...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001248
EISBN: 978-1-62708-221-1
...Abstract Abstract Failure occurred in the teeth of a case-hardening Ni-Cr-Mo alloy steel spur gear in the transmission system of heavy duty tracked vehicles. The defects were in the nature of seizure on the involute profile. Scrutiny of the transmission system showed there might be choking...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001349
EISBN: 978-1-62708-215-0
...Abstract Abstract The dished ends of a heavy water/helium storage tank manufactured from 8 mm (0.3 in.) thick type 304 stainless plate leaked during hydrotesting. Repeated attempts at repair welding did not alleviate the problem. Examination of samples from one dished end revealed...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001814
EISBN: 978-1-62708-180-1
... be determined. Only after careful visual examination has been completed should any destructive work be considered. In certain cases, various nondestructive examination techniques—for example, ultrasonics, x-ray, or magnetic-particle inspection—should be implemented before cutting to obtain a more complete...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001815
EISBN: 978-1-62708-180-1
... in form to those of spur gears and helical gears, but point inward toward the center of the gear ( Fig. 5a ). Common applications for internal gears include rear drives for heavy vehicles, planetary gear systems, and speed-reducing devices. Internal gears are sometimes used in compact designs because...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001838
EISBN: 978-1-62708-241-9
... could be found. One of the cracks was forced open in the laboratory by bending to 180° a strip cut from the pipe wall ( Fig. 7 ). Microfractographical studies by means of the SEM did not reveal evidence for LME-causing foreign heavy metals or other grain boundary irregularities, such as grain...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003560
EISBN: 978-1-62708-180-1
...  Velocity Low Low Variable High  Impingement angle Low Low Medium-low Variable Environmental Generally dry Generally as slurry, variable pH Variable Generally as slurry, variable pH Principle mechanisms Plowing, cutting Cutting, some fragmentation and corrosion Cutting, some...
Book Chapter

Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006790
EISBN: 978-1-62708-295-2
... of grooves that do not involve direct material removal. The displaced material forms ridges adjacent to grooves, which may be removed by subsequent passage of abrasive particles. Cutting occurs when material is separated from the surface in the form of primary debris, or microchips, with little...
Book Chapter

Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001412
EISBN: 978-1-62708-229-7
... outlet side had been bearing, only two on the inlet side showed evidence of contact with the wheel grooves and the bedding mark on the second tooth from the top was very superficial. The crack origin was found to coincide with the edge of the heavy bedding mark on the top tooth. In the case of the root...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001503
EISBN: 978-1-62708-234-1
... martensite throughout, and no retained austenite. And the surface structure showed no evidence of frictional distress; it had been cleanly cut by abrasion. The contact pattern on the concave (forward) sides shows no wear at the heel end, but the wear increases uniformly to a deeply worn area near the toe...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
... specimens. Indeed, the initial sectioning operation may be quite a challenge. Bulk samples for subsequent laboratory sectioning may be removed from larger pieces using methods such as core drilling, band- or hacksawing, flame cutting, or similar methods. Flame or torch cutting may be the only recourse...