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axle shafts

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001495
EISBN: 978-1-62708-221-1
...Abstract Abstract An axle shaft in an open-pit mining truck hauling overburden failed after operating for 27,000 h. Previous failures had resulted from longitudinal shear, but this had not, bringing material quality into question. Chemical analysis verified that the part was SAE4340 Ni-Cr-Mo...
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
...Abstract Abstract One end of an axle shaft containing the integral spur pinion was submitted for examination, along with the report of a tooth pitting failure. The spur pinion, integral to the axle shaft, operated in a medium-size, off-highway truck at an open-pit mine, for “a relatively short...
Image
Published: 30 August 2021
Fig. 9 Images of a bearing and associated axle shaft. (a) Scored inside-diameter surface of the bearing. (b) Severely worn region on the axle. (c) Cross section of a region with stepped abrasive wear More
Image
Published: 30 August 2021
Fig. 13 (a) Axle shaft exhibiting flat fracture with three distinct fracture regions. (b) Intergranular fracture through the induction-hardened surface. Original magnification: 1000×. (c) Primarily dimple rupture within the intermediate fibrous zone. Original magnification: 1000×. (d) Cleavage More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001501
EISBN: 978-1-62708-221-1
...Abstract Abstract A spiral bevel gear and pinion set that showed "excessive wear on the pinion teeth" was submitted for analysis. This gear set was the primary drive unit for the differential and axle shafts of an exceptionally-large front-end loader in the experimental stages of development...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001152
EISBN: 978-1-62708-234-1
...Abstract Abstract Thermal and transformation stresses, resulting from welding, adding up with operational stresses can result in failure. Examples involving the crankshaft of a shaft-drive to produce artificial waves in a swimming pool, the joint bar of a dredger cast out of a running non...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001763
EISBN: 978-1-62708-241-9
... at the roots of splines. Fractures from spline roots have also been observed in a rear axle shaft [ 6 ] and a steering shaft of a similar vehicle [ 7 ]. This suggests that the spline tooth root is a preferential site to initiate failure. These “tooth root” cracks propagated toward the central zone...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0046160
EISBN: 978-1-62708-224-2
... was keyed to the axle ( Fig. 1a ). There were visual indications that the crane wheel had moved during operation to a position approximately 12.5 mm ( 1 2 in.) farther away from the driven end of the axle. The interference fit between the wheel and the shaft was insufficient to prevent radial...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001260
EISBN: 978-1-62708-235-8
...Abstract Abstract One percent Cr-Mo low alloy constructional steel is widely used for high tensile applications, e.g., for manufacture of high tensile fasteners, heat treated shafts and axles, for automobile applications such as track pins for high duty tracked vehicles etc. The steel is fairly...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001844
EISBN: 978-1-62708-241-9
...Abstract Abstract A cylindrical spiral gear, part of a locomotive axle assembly, cracked ten days after it had been press-fit onto a shaft, after which it sat in place as other repairs were made. Workers at the locomotive shop reported hearing a sound, and upon inspecting the gear, found...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001762
EISBN: 978-1-62708-241-9
... does not imply the absence of fatigue. Environment assisted cracking may also play a role. References References 1. Fett G.A. : Characterization of Semi Float Axle Shaft Bending Failures . SAE Tech Paper Series 940732, Feb ( 1994 ) 10.4271/940732 2. Burrier H. Jr...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001040
EISBN: 978-1-62708-214-3
...Abstract Abstract Failed portions of a 4140 steel axle from a prototype urban transit vehicle were examined to determine the cause of failure. The testing procedures included visual examination, macrofractography, metallography, chemical analysis, and hardness and tensile testing. The analysis...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001035
EISBN: 978-1-62708-214-3
.... However, more than just the fractography should be considered. For example, in an overload failure of an axle, the shaft is often found to be slightly bent. The outer curvature of the bend should line up with the origin of the fracture. In addition, the fracture surface often veers (at about 180° from...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006810
EISBN: 978-1-62708-329-4
.... Although the drive shaft exhibited reasonably high strength, its resistance to wear and abrasion was inadequate for the conditions to which it was exposed. Example 4: Wear Failure of an Axle An axle exhibited severe wear after simulated testing with matching bearings. It was indicated that the 25 mm...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001615
EISBN: 978-1-62708-235-8
...Abstract Abstract Carbon steel axle forgings were rejected due to internal cracks observed during final machining. To determine the cause of the cracks, the preforms of the forging were analyzed in detail at each stage of the forging. The analysis revealed a large central burst...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001232
EISBN: 978-1-62708-233-4
... – involving axles, leaf springs, engine rods, wing struts, bearings, gears, and more – can occur, seemingly without cause, due to vibrational fracture. Vibrational fractures begin as cracks that form under cyclic loading at nominal stresses which may be considerably lower than the yield point of the material...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001485
EISBN: 978-1-62708-225-9
... or pitting (fatigue) Cracks or fractures Creep Smearing Wear Softening Indentation Fluting Corrosion General If it is desired to carry out a detailed examination of a defective bearing, it is essential that, when it is removed from a shaft or a housing or is dismantled...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006815
EISBN: 978-1-62708-329-4
... simple cylindrical hardened shafts extending out of the top and bottom of the axle eye into the top and bottom bearings of the stub axle yoke. A thrust bearing is fitted between the bottom of the axle eye and the bottom bearings in the yoke to accept the vehicle weight from the axle eye. The forces...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
... , is an important design parameter for such applications as rotating shafts involving low-stress, high-frequency fatigue loading where no crack extension during service can be permitted. The fatigue-crack threshold is a function of a number of variables, including the material, the test conditions, the R-ratio...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003502
EISBN: 978-1-62708-180-1
... the axis about which the stub axle can turn in order to steer the truck. Kingpins are normally simple cylindrical hardened shafts extending out of the top and bottom of the axle eye into the top and bottom bearings of the stub axle yoke. A thrust bearing is fitted between the bottom of the axle eye...