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Bushings

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0046195
EISBN: 978-1-62708-225-9
... Abstract A pilot-valve bushing fractured after only a few hours of service. In operation, the bushing was subjected to torsional stresses with possible slight bending stresses. A slight misalignment occurred in the assembly before fracture. The bushing was made of 8617 steel and was case...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001533
EISBN: 978-1-62708-225-9
... Abstract An investigation of wear and failure of babbitt bushes was completed in this study. The results showed that wear at dry sliding of babbitt obtained by plasma spraying was less than that of babbitt in the as-cast state and after a deformation heat treatment. The failure of babbitt...
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Published: 01 December 2019
Fig. 3 Microstructure ( a ) undeformed bushing, ( b ) deformed bushing (M10/0.25 (resolution), etchant: 6 s, 100 ml distilled water, 50 ml HCl, 5 g ferric chloride) More
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Published: 01 December 1992
Fig. 4 Severe corrosion in the bore of the pillow-block bushing hole of the main rotor yoke. Fatigue crack (origin labeled O) initiated from a corrosion pit. 4.25×. More
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Published: 01 December 1993
Fig. 3 Schematic view of the shaft, tongue, and bush. More
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Published: 01 June 2019
Fig. 2 Broken-out bushing with fracture. 1 × More
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Published: 01 June 2019
Fig. 1 Carbonitrided 8617 steel pilot-valve bushing that fractured in fatigue because of improper heat treatment. Dimensions given in inches More
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Published: 01 June 2019
Fig. 2 Fatigue fracture in spar plate which initiated beneath bushing at position shown by arrow. (1.84× approx.). More
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Published: 01 December 2019
Fig. 2 Bushing ( a ) deformed face, circle shows region where indentation was formed, ( b ) undeformed face of bushing More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001575
EISBN: 978-1-62708-217-4
... of Cu alloy (AMS4845) bushings force fit into AA2024-T3 Al alloy spacing elements. It was found that uncontrolled fit interference between the two components had led to Cu alloy overstress. Thermal cycling under operating conditions yielded the material. The dilation was directed inward to the shaft...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001783
EISBN: 978-1-62708-241-9
... values for round design versus square design: (full rotation or free to rotate) (ANSYS) results AMPCO 25 (new design) AMPCO 25 (existing design) Minimum 369 psi 849 psi Maximum 5.594e + 005 psi 4.395e + 005 psi Stress values of round bushing (0.33 in diameter) versus (0.43...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0091674
EISBN: 978-1-62708-217-4
... Abstract Forged aluminum alloy 2014-T6 hinge brackets in naval aircraft rudder and aileron linkages were found cracked in service. The cracks were in the hinge lugs, adjacent to a bushing made of cadmium-plated 4130 steel. Investigation (visual inspection and 250X micrographs) supported...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001027
EISBN: 978-1-62708-214-3
... in the failed yoke after separation of crack faces. Fatigue crack initiated in bore of pillow-block bushing labeled O. 0.93×. Fig. 4 Severe corrosion in the bore of the pillow-block bushing hole of the main rotor yoke. Fatigue crack (origin labeled O) initiated from a corrosion pit. 4.25×. Fig...
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 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 of the outside...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001144
EISBN: 978-1-62708-217-4
... initiating at the center of the spar shown at the arrow, beneath the blade fold pin bushing. Beach marks extended 19.5 mm out from the origin along the centerline of the spar. The remainder of the fracture (20 mm) was slant fracture typical of overload. The entire fracture surface was uncorroded, indicating...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0046146
EISBN: 978-1-62708-217-4
... that the primary fracture initiated from multiple origins on both sides of a lubrication hole that extended from the outer surface to the bore of a lug in two cadmium-plated flanged bushings made of copper alloy C63000 (aluminum bronze) that were press-fitted into each bored hole in the lug. Sectioning and 2x...
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Published: 01 December 1992
Fig. 3 Fracture surface of the crack in the failed yoke after separation of crack faces. Fatigue crack initiated in bore of pillow-block bushing labeled O. 0.93×. More
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Published: 01 June 2019
Fig. 4 a: Failed shock strut assembly: (A) indicates the eye-bolt with beryllium copper bushing and (B) the eye-bolt region on the strut housing. b: The dotted line indicates the extent of the stress corrosion crack at the origin of the failure. More
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Published: 01 June 2019
Fig. 3 Examples of a few of the different types of failed chipper knives examined. Arrows point to fractures. (a) Knife from a 75 in. Morbark total tree harvester. (b) Knife from a 66 in. CM&E sawmill chipper. (c) Knife from a Carthage Norman chipper. (d) Knife from a 96 in. Bush chipper More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047835
EISBN: 978-1-62708-217-4
... of the piston-pin-bushing bore. The fracture was nucleated at an electroetched numeral 5 on one of the flange surfaces. A notch, caused by arc erosion during electroetching, was revealed by metallographic examination of a polished-and-etched section through the fracture origin. A remelted zone and a layer...