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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001531
EISBN: 978-1-62708-231-0
..., toughness, and ductility are mainly determined by the carbon content of wheel steels. The fatigue crack growth resistance is insensitive to composition and microstructure, while the fatigue crack initiation life increases with the decrease of austenite grain size and pearlite colony size. The dynamic...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0006428
EISBN: 978-1-62708-217-4
...Abstract Abstract Four nose wheels fabricated from 2014-T6 aluminum alloy and cold worked at the flange were examined. Visual examination showed that the failure started in the tube well area on the wheel with serial number 31. The failure initiated in the flange fillet on wheels with serial...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0046247
EISBN: 978-1-62708-235-8
...Abstract Abstract A double-flange trailer wheel, in service on a coke-oven pusher car for about five years, broke. Specifications called for rolled steel track wheels conforming to ASTM A 186 (since reclassified as A 504). Chemical analysis showed the metal in the wheel to be medium-carbon...
Image
Published: 01 January 2002
Fig. 8 Fitting for attaching dual wheels to a tractor axle that failed when 1045 steel U-bolts in the assembly were overstressed. The bolts failed because of poor hardenability relative to their diameter. More
Image
Published: 30 August 2021
Fig. 7 Fitting for attaching dual wheels to a tractor axle that failed when 1045 steel U-bolts in the assembly were overstressed. The bolts failed because of poor hardenability relative to their diameter. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001157
EISBN: 978-1-62708-218-1
...Abstract Abstract A suspension bushing separated from the disk on the rear wheel suspension of a racing vehicle while under operation on an express highway, causing the wheel to detach from the car. Visual inspection showed fresh turning grooves at four built-up fillet welds on the torus...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0092103
EISBN: 978-1-62708-234-1
...Abstract Abstract A polyoxymethylene gear wheel that had been in operation in a boiler room failed. Investigation (visual inspection and 305x images) supported the conclusion that failure was due to postcrystallization causing considerable shrinkage. Breakdown along the crystalline...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0048586
EISBN: 978-1-62708-218-1
...Abstract Abstract Each of the ten studs on one wheel of a semitrailer used to haul coal broke in half while the trailer was in operation. Both halves of each of three studs were sent to the laboratory to determine the cause of failure. Visual examination of the fracture surfaces of the studs...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001309
EISBN: 978-1-62708-215-0
...Abstract Abstract Bending fatigue caused crack propagation and catastrophic failures at several locations near the welds on the low-carbon steel tubular cargo box frame of police three-wheel motorcycles. ANSYS finite element analysis revealed that bending stresses in some of the frame members...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0048099
EISBN: 978-1-62708-235-8
...Abstract Abstract A bridge wheel on a crane, forged from 1055 steel, fractured after one year of service. The wheel fractured in the web between the hub and the rim. A small area containing beach marks that originated in a heavily burned area on the web surface was revealed by visual...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001306
EISBN: 978-1-62708-215-0
...Abstract Abstract Failure of carbon-manganese steel wheel studs caused by improper tightening of the inner wheel nuts resulted in separation of a dual wheel assembly on a heavy truck. The benchmark pattern observed on the fracture surfaces of the studs evidenced fatigue cracks emanating from...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001633
EISBN: 978-1-62708-221-1
...Abstract Abstract Failure analysis of a mobile harbor crane wheel hub that included SEM and EDS analyses demonstrated that the mechanism of failure was fatigue. The wheel hub was a ductile cast iron component that had been subjected to cyclic loading during a ten-year service period...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0048102
EISBN: 978-1-62708-224-2
...Abstract Abstract A bridge wheel from a 272,160 kg stripper crane fractured in the web near the rim after one year of service. The wheel was forged from 1055 steel, and the tread, hub faces, and hub bore were machined. Beach marks indicative of fatigue at ten locations were revealed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047169
EISBN: 978-1-62708-217-4
...Abstract Abstract The flange on an outboard main-wheel half (aluminum alloy 2014-T6 forging) on a commercial aircraft fractured during takeoff. The failure was discovered later during a routine enroute check. The flange section that broke away was recovered at the airfield from which the plane...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001777
EISBN: 978-1-62708-241-9
...Abstract Abstract The structural collapse of an iron-ore bucket-wheel stacker reclaimer at the beginning of operation was investigated by means of mechanical tests, microstructural characterization, and computational structural analysis. The mechanical failure was a consequence of a brittle...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001303
EISBN: 978-1-62708-215-0
...Abstract Abstract A sand-cast LM6M aluminum alloy sprocket drive wheel in an all-terrain vehicle failed. Extensive cracking had occurred around each of the six bolt holes in the wheel. Evidence of considerable deformation in this area was also noted. Examination indicated that the part failed...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001025
EISBN: 978-1-62708-214-3
...Abstract Abstract A piece of wheel flange separated from the main landing gear wheel of a C130 aircraft as it taxied on a runway. The wheel was a 2014-T61 aluminum alloy forging and had been in service nearly 20 years. Fractographic evidence indicated that the initial crack growth was caused...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047125
EISBN: 978-1-62708-217-4
...Abstract Abstract A commercial aircraft wheel half, machined from an aluminum alloy 2014 forging that had been heat treated to the T6 temper, was removed from service because a crack was discovered in the area of the grease-dam radius during a routine inspection. Neither the total number...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047165
EISBN: 978-1-62708-217-4
...Abstract Abstract Two outboard main-wheel halves (aluminum alloy 2014-T6 forged) from a commercial aircraft were removed from service because of failure. One wheel half was in service for 54 days and had made 130 landings (about 1046 roll km, or 650 roll mi) when crack indications were...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001305
EISBN: 978-1-62708-215-0
...Abstract Abstract An ASTM A 504 carbon steel railway car wheel that was used on a train in a metropolitan railway system failed during service, causing derailment. The wheel was completely fractured from rim to hub. Macrofractography of the fracture surface showed road grime, indicating...