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Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001286
EISBN: 978-1-62708-215-0
...Abstract Abstract Failure of AISI 1015 steel brake discs used in power transmissions in emergency winches was investigated using various testing methods. The failed discs were stampings that had replaced cast discs. Residual stresses in the fillets of new cast and new stamped brake discs were...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0047321
EISBN: 978-1-62708-224-2
...Abstract Abstract A 58.4 cm (23 in.) diam heavy-duty brake drum component of a cable-wound winch broke into two pieces during a shutdown period. Average service life of these drums was two weeks; none had failed by wear. The drums were sand cast from ductile iron. During haul-out, the cable...
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
... fracture. No defects were found that could have contributed to failure. The wheel conformed to the chemical, microstructural, and hardness requirements for class A wheels. Failure was attributed to repeated severe heating and cooling of the rim and flange due to brake locking or misapplication of the hand...
Book Chapter

Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001419
EISBN: 978-1-62708-221-1
...Abstract Abstract While a tower crane was slewing with a full load of concrete at an 80 ft radius, the operator applied the emergency brake to avert collision with another crane. One of the main square tubular uprights split over a short distance and a number of the adjacent bracings had broken...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006830
EISBN: 978-1-62708-329-4
...Abstract Abstract The types of metal components used in lifting equipment include gears, shafts, drums and sheaves, brakes, brake wheels, couplings, bearings, wheels, electrical switchgear, chains, wire rope, and hooks. This article primarily deals with many of these metal components of lifting...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0047343
EISBN: 978-1-62708-236-5
... of the rotor. Actual operating temperatures exceeded those intended for this application. The presence of transformation products in the brake-rotor edge indicated that the lower critical temperature had been exceeded during operation. Critical temperature Pearlite Phase decomposition 60-40-18 UNS...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001672
EISBN: 978-1-62708-236-5
...Abstract Abstract Failed ferrous components were analyzed from a crane that operated on an offshore platform. The crane failed during operation and fell into the sea. The brake spring on the boom hoist was found to have fractured in four places. The spring contained a line defect (seam...
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
... be generated by an abrupt change of operation such as start-up or sudden braking during working. Results of stress analysis reveal that the highest stressed area coincided with the fractured regions of the failed shaft. The maximum stress predicted under shock loading exceeded the yield strength...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001678
EISBN: 978-1-62708-218-1
... of the outerface of the brake drum and the wheel rim. Furthermore, the wheel nuts that were on the bolts F and D appeared to be unscrewed first before the detachment of the wheel as the threads on these bolts apparently showed no sign of being stripped. There was also no damage observed on the other areas...
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
... trailer brakes had started to smoke, and he found that the brakes were partially applied even when he wasn't using them. He assumed that the brakes were running hotter because he was driving faster through the hills without the load of the bulldozer, and that this heat was causing his brakes to drag...
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
... is critical to investigating the root cause of an engineering failure. As an example, an articulated tractor and low-loading trailer were being driven through some hilly country after delivery of a bulldozer to a construction site. The driver noticed that his rear trailer brakes had started to smoke, and he...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003505
EISBN: 978-1-62708-180-1
.... They collided with another snowmobile rented from the same rental agency. She was thrown on the ice, injuring her left knee. Surgery was performed but left her with permanent injury. The owner of the agency admitted that the brakes had been disconnected by the previous owner of the agency (while he...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003571
EISBN: 978-1-62708-180-1
... , p 139 – 144 18. Kato T. and Magario A. , The Wear of Aramid Fibre Reinforced Brake Pads: The Role of Aramid Fibres , STLE Trib. Trans. , Vol 37 ( No. 3 ), 1994 , p 559 – 565 19. Voort J.V. and Bahadur S. , The Growth and Bonding of Transfer Film...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001719
EISBN: 978-1-62708-231-0
... the axle/wheel set. Traction motors can also be used for braking the train. The switchgear is used to convert the traction motor into an electrical generator for dynamic braking. During braking the motor fields are connected in series with the main generator. A wick assembly in each of the bearings...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001307
EISBN: 978-1-62708-215-0
... when braking. A tractor-trailer combination loaded with wood chips was approaching an intersection on a rural highway. When the driver applied the brakes he hear a snap and found that he had lost control of vehicle. The vehicle veered to the left and then rolled over. The river suffered a broken...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001810
EISBN: 978-1-62708-241-9
... system is used for picking and transfers strain energy to the projectile before it separates from the picker shoe. The torsion bar can be adjusted to deliver the energy required to propel the projectile through the guide teeth to the shuttle brake [ 1 , 2 ]. The torsion bar mechanism is shown...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001473
EISBN: 978-1-62708-229-7
... parts of fractured gear wheel rims showing positions of half holes. When the braking force due to faulty synchronising was suddenly applied to the generator, the pinion continued to drive against the load, thereby applying a considerable force to the rims and the upper halves of the pinion...
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
... gear wheel of the C130 aircraft was composed of two halves bolted together to support the tire. The two halves were not quite symmetrical, because the inboard half housed brakes ( Fig. 1 ). Fig. 1 Schematic of the C130 aircraft main landing gear wheel, showing the bolted assembly the brake...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006789
EISBN: 978-1-62708-295-2
... processes and relevant tribosystems Table 1 Wear processes and relevant tribosystems Wear process Examples of relevant tribosystems Sliding wear Sliding bearings; cam and tappets; guides; seals; piston rings; disc-pad braking system; forming dies; cutting tools Fretting wear Riveted...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001499
EISBN: 978-1-62708-236-5
... the gasoline engine and lets it run until warmed up. In the meantime, the hydraulic motor and the speed reducer both vibrate constantly until the brake is released. It was quite evident that this mode of failure could only occur with the gears in a static position under a reverberating type of load...