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(Other, miscellaneous, or unspecified) failure

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047387
EISBN: 978-1-62708-225-9
...) was required. Chemical composition Gear teeth Hardenability Sprockets Low-alloy steel (Other, miscellaneous, or unspecified) failure Induction-hardened teeth on a sprocket cast of low-alloy steel wore at an unacceptably high rate. A surface hardness of 50 to 51 HRC was determined; 55 HRC...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0046953
EISBN: 978-1-62708-220-4
... deg F), which exceeded normal operating temperatures, and carburization was not the principal cause of failure. No recommendations were made. Chemical reactors Melting Overheating Hastelloy X UNS N06002 (Other, miscellaneous, or unspecified) failure A portion of the wall of a reactor...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0048035
EISBN: 978-1-62708-224-2
... it to be 1724 MPa. Thus, a 50% loss in tensile strength of the wires was caused by overheating which lead to failure of the rope. It was recommended that prolonged exposure of wire ropes to extreme conditions should be avoided. Cranes Slags Tensile strength Steel wire rope (Other, miscellaneous...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001900
EISBN: 978-1-62708-225-9
.... In the craters the residue of partial melting was seen. Ball bearings Electric arcs Electric motors Grounding (electrical) Martensite Melting Scanning electron microscopy 52100 UNS G52986 (Other, miscellaneous, or unspecified) failure Incorrect grounding of an electric motor resulted...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047939
EISBN: 978-1-62708-225-9
... G86200 4620 UNS G46200 (Other, miscellaneous, or unspecified) failure The roller bearing shown in Fig. 1 was one of two that were mounted in an electric motor/gearbox assembly. Rough operation of the bearing was observed, and the unit was shut down. The bearing was removed and submitted...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047935
EISBN: 978-1-62708-225-9
..., miscellaneous, or unspecified) wear (Other, miscellaneous, or unspecified) failure The electric motor in an office machine was producing intermittent noise. Ball bearings were suspected as the source of the noise and were removed from the motor and sent to the laboratory for examination. The bearings...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001080
EISBN: 978-1-62708-214-3
... design was responsible for the loosening of the nut. It was recommended that the locking mechanism be redesigned and changed in all existing turbines. Locking Nuts (fasteners) Turbine disks Turbine steel (Other, miscellaneous, or unspecified) failure Background A290 mm (10 in.) diam...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c0046956
EISBN: 978-1-62708-232-7
... boundaries Intermetallic phases Muffle furnaces Overheating Nickel-base high-temperature alloy (Other, miscellaneous, or unspecified) failure A brazing-furnace muffle 34 cm (13 1 4 in.) wide, 26 cm (10 3 8 in.) high, and 198 cm (78 in.) long, was fabricated from nickel-base high...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047118
EISBN: 978-1-62708-235-8
... Nonmetallic inclusions 1035 UNS G10350 (Other, miscellaneous, or unspecified) failure An automobile manufacturer rejected several 1035 steel stub axles because of what appeared to be short longitudinal cracks in the surfaces of the pins. ( Fig. 1a ). The cracks were found when six axles were examined...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001623
EISBN: 978-1-62708-232-7
... Insulation Glass wool (Other, miscellaneous, or unspecified) failure Several glass wool insulation sections from a heat-treat furnace showed visible discoloration. The insulation was originally white but exhibited a gray discoloration in some areas, as shown in Fig. 1 . As in the coin example...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001015
EISBN: 978-1-62708-217-4
... Carburetors Clamps Helicopters Turbochargers Metal (Other, miscellaneous, or unspecified) failure Careful investigation of the flight log and accident reports indicated that a helicopter rapidly lost altitude and struck a tree, causing a fire and severe damage. In cases of this kind, it is common...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001624
EISBN: 978-1-62708-218-1
... localized heating, which led to melting of the wire. Chemical analysis Corrosion products Discoloration Electric Sensors Wire Copper (Other, miscellaneous, or unspecified) failure An electronic sensor coil failed continuity testing, indicating that a break was present in the polymercoated...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001626
EISBN: 978-1-62708-235-8
... be put into place and another type of tank material be considered. Chemical analysis Discoloration Pickling Tubes 17-4 PH UNS S17400 (Other, miscellaneous, or unspecified) failure A type 17-4PH stainless steel tube exhibited brown discoloration after a pickling operation. Although...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001572
EISBN: 978-1-62708-236-5
... was recommended in this case for the production acceptance tests. Coating removal Gouging Hydraulic assemblies Wobblers 52100E Titanium nitride coating UNS G52986 (Other, miscellaneous, or unspecified) failure Background Extensive slipper/wobbler failures had occurred in the integrated drive...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001441
EISBN: 978-1-62708-220-4
... failures (Other, miscellaneous, or unspecified) failure Soft-soldered joints in pipes that are subjected intermittently to temperatures below the freezing-point of water occasionally fail in a rather unusual manner, the two examples to be described having occurred in refrigerating plants. The samples...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c0045909
EISBN: 978-1-62708-232-7
... oxide. A similar inclusion at the failure site in the melting pot may have reacted violently with the molten magnesium, causing the leak. Fires Foundries Liquid metals Magnesium Nonmetallic inclusions Xray analysis Hot-rolled steel (Other, miscellaneous, or unspecified) failure A steel...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047986
EISBN: 978-1-62708-217-4
... Overheating Stresses Vibration 52100 UNS G52986 (Other, miscellaneous, or unspecified) failure An engine on a jet aircraft produced excessive vibration in flight and was immediately shut down. Dismantling the engine revealed complete failure (fracture) of the cage in one of the two main-shaft...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0048257
EISBN: 978-1-62708-217-4
... in an exothermic atmosphere. It was recommended that steps be taken during heat treatment to ensure neither of the two occurred. Aerospace engines Case hardening Controlled atmosphere Exothermic reactions Surface hardness AMS 6263 UNS K44414 (Other, miscellaneous, or unspecified) failure Heat...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001285
EISBN: 978-1-62708-215-0
... of the clips. Compression damage Steel wire rope (Other, miscellaneous, or unspecified) failure Background A wire rope failed as it was being used to lower a steel television tower. The rope was an integral component of a lowering mechanism on the tower. It parted when the tower was in a near...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c9001627
EISBN: 978-1-62708-222-8
... a factory worker. Based on these findings, one of the recommendations was to use thicker pads between the sinks to allow any such liquids to dry before causing corrosion damage. Chemical analysis Chlorides Discoloration Kitchen sinks 304 UNS S30400 (Other, miscellaneous, or unspecified) failure...