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Wire connections

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.homegoods.c0049838
EISBN: 978-1-62708-222-8
... Abstract An electron probe microanalyzer was applied to the study of service failures (due to severe heating) of aluminum wire connections in residential electrical circuits. Perturbed regions in which the composition underwent a change during the failure were revealed by optical and scanning...
Image
Published: 01 June 2019
Fig. 1 Bolt and thimble assembly used for connection of a wire rope to a crane hanger bracket showing the worn area of the bolt. Dimensions given in inches More
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001385
EISBN: 978-1-62708-215-0
... panel from incident 1 is shown in Fig. 2 and Fig. 3 . Three aluminum wires entered the panel through the hole indicated by the arrow. These aluminum wires connected the power meter to the breaker panel. The badly melted and arced stubs of these wires protruded approximately 25 mm (1...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001607
EISBN: 978-1-62708-231-0
... Abstract Wire ropes, pulleys, counterweights, and connecting systems are used for auto tensioning of contact wires of electric railways. A wire rope in one such auto tensioning system suffered premature failure. Failure investigation revealed fatigue cracks initiating at nonmetallic inclusions...
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
... Abstract A 6 x 19 fiber core steel wire rope failed as it was being used to lower a steel television tower. Fracture of the rope occurred at a point under one of two clips used to fashion a spliced loop that was directly connected to the top of the tower. Microscopic examination of the fracture...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001443
EISBN: 978-1-62708-235-8
... motor. The mode of failure and the changes in the microstructure showed that fracture was due to a defective resistance butt-weld which had been made when the wire was in process of drawing. A further example of a conductor failure occurred in a 12 SWG copper connection between the rotor contactor...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001228
EISBN: 978-1-62708-229-7
... milled blades without binding wires and cover band. They did not fracture at the fastening, i.e. the location of highest bending stress, but in a central region which was 165 to 225 mm away from the gripped end. The blades were fabricated from a stainless heat-treatable chromium steel containing 0.2C...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c0046388
EISBN: 978-1-62708-224-2
... Abstract The bolt in a bolt and thimble assembly used to connect a wire rope to a crane hanger bracket was worn excessively. Two worn bolts, one new bolt, and a new thimble were examined. Specifications required the bolts to be made of 4140 steel heat treated to a hardness of 277 to 321 HRB...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001793
EISBN: 978-1-62708-241-9
... ± 13.3 HAZ (weld–wire spacer) 150.0 ± 5.2 Wire spacer 190 ± 0.7 A transverse observation of the weld connecting the wire spacer to the pipe revealed defects like lack of penetration on both sides of the weld, resulting in cavities between the weld metal, wire spacer, and concentric pipe...
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Published: 01 December 2019
Fig. 8 Propagation of fatigue crack from the wire tip at the detached part of the wire–pipe welded connection. Propagation was irradiated from the wire spacer through the weld metal More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001258
EISBN: 978-1-62708-235-8
... Abstract A drawing plant which processed steel wire of designation 105 Cr 2 for ball bearings had losses due to crack formation and wire breakage during drawing. To establish the reason for the breakage, seven fractures were submitted for investigation with contiguous wire segments on both...
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Published: 01 June 2019
Fig. 12 Fractured sample from AFRS Helix #10 showing corrosion at a split on the outside diameter of the wire, where the failure initiated. The face of the split, with corrosion products, connects the corrosion on the outside surface of the wire to the fracture initiation region. The wire More
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Published: 15 May 2022
Fig. 4 X-ray image showing displaced wires in an electrofusion pipe fitting connection. Courtesy of Element New Berlin More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001549
EISBN: 978-1-62708-224-2
... and its support had failed by fatigue, and that, judging by the heavy deformation of the fracture faces of the I-beam, extension of the fatigue crack had occurred over a considerable time. 5. Failure of Hoist Rope Wire ropes are frequently subjected to repeated bending in service. The possibility...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001118
EISBN: 978-1-62708-214-3
... on the inside surface ( Fig. 2 , 3 , 4 ). The fracture was macroscopically flat (located nearly opposite the spring connection where the two ends were intertwined). The fatigue portion of the fracture was approximately one-half of the spring wire diameter ( Fig. 2 ). The origin of the fracture...
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Published: 01 June 2019
Fig. 10 Modified Goodman Diagram for 1.5 mm music wire helical springs at 10 7 , 10 5 , and 10 4 cycles. All the stresses were corrected by the Wahl factor. The values at R=0 were obtained from Ref 10 . The data points 373 and 231 represent the fatigue loading for 9 mm and 5 mm displacement More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001259
EISBN: 978-1-62708-233-4
... Abstract A bolt manufacturer observed that products made from certain shipments of steel 41 Cr4 wire were prone to the formation of quench cracks in their rolled threads. The affected wire was tested and found to be highly sensitive to overheating because of the metallurgical method by which...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001125
EISBN: 978-1-62708-214-3
... are mostly of ACSR construction. Because electrical conductor (high-purity) aluminum cannot bear its own weight over long spans, one or more layers of aluminum wire strands are assembled around a steel wire cable core. The aluminum bears the electrical load, and the steel the mechanical one. Such cables...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006823
EISBN: 978-1-62708-329-4
... and 0.5 in.) nominal wall thickness. The columns were designed and constructed in the 1940s and fabricated of SA70 carbon steel (a material no longer being used today in 2021). The vessels were supported by a skirt base and guy wire supports. The operating conditions of the columns are summarized...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001674
EISBN: 978-1-62708-234-1
... Detonators: Type A Green DAP, AuPt Wire x x x x x x Type B Blue DAP, Au Wire (Corroding) x x x x x x Type C Green DAP, Au Wire x x x x x x Type D Green DAP, Au Wire x x x x x x Type E Red DAP, Au Wire x x x x x x Type F Red DAP, Au Wire (small size) x x...