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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.c9001385
EISBN: 978-1-62708-215-0
... electrical box during construction of the home. In the third, failure was caused by a marginal installation. Strict adherence to all applicable electrical codes and standards is critical in the case of aluminum wiring. Electrical components not specifically designed for aluminum must never be used...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001594
EISBN: 978-1-62708-229-7
... rates, which means cracks extend from a detectable size to a through-wall crack in a relatively short time. When fatigue cracks grow large enough to be visible to NDE, it is likely that the component is near the end of its useful life. TU Electric has determined that an inspection program designed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0047939
EISBN: 978-1-62708-225-9
...Abstract Abstract Rough operation of the roller bearing mounted in an electric motor/gearbox assembly was observed. The bearing components made of low-alloy steel (4620 or 8620) and the cup, cone and rollers were carburized, hardened and tempered. The contact surfaces of these components (cup...
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.homegoods.c0090445
EISBN: 978-1-62708-222-8
...Abstract Abstract Numerous protective covers, used in conjunction with an electrical appliance, failed during assembly with the mating components. The failures were traced to a particular production lot of the covers and occurred during insertion of the screws into the corresponding bosses...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0090463
EISBN: 978-1-62708-234-1
...Abstract Abstract A housing used in conjunction with an electrical switch failed shortly after being placed into service. A relatively high failure rate had been encountered, corresponding to a recent production lot of the housings, and the failed part was representative of the problem...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
... Arnold Publishers , 1987 32. Bossi R.H. and Kruse R.J. , “ X-Ray Tomographic Inspection of Printed Wiring Assemblies and Electrical Components ,” Boeing Aerospace and Electronics Co. , Seattle, WA , 1990 33. Kruse R.J. and Bossi R.H. , X-Ray Tomographic Techniques...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001578
EISBN: 978-1-62708-233-4
... test on the cutting tool, the most likely source of the problem, showed a resonance peak at 114,750 cpm. Profiling the imaginary components of the transfer functions taken along the surface of the tool produced a mode shape of the first natural frequency of the tool. The 114,750 cpm mode was found...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001810
EISBN: 978-1-62708-180-1
..., lubricant, and bearing components Potential sources of debris Potential sources of electrical current passing through the bearing Potential sources of water and other corrosive fluids Load spectrum and sources of potential-unknown loads Misalignment of deflections that influence load...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001076
EISBN: 978-1-62708-214-3
... specifications. Grounding devices can be used to eliminate unwanted travel of electricity across the soft bearing components. Degaussing the parts is another method of eliminating residual magnetism, which may be a potential problem. ...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001796
EISBN: 978-1-62708-241-9
.... Investigators also examined the effect of electrical discharge on crater dimensions and density and the role that thermoelectric voltage potentials may have played. roller bearing electrical fluting bearing current bearing steel erosion microcraters scanning electron microscopy hydrodynamic...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006824
EISBN: 978-1-62708-329-4
... frequently, such as one operating in an electrical utility providing power in peak demand periods, may have turbine components that are life limited by thermal-mechanical fatigue. Those same components operating in a base load application, such as a pipeline compressor station, may have different life...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001389
EISBN: 978-1-62708-215-0
... in the molded cases and covers. The working parts are mounted or encased in molded plastic for structural reasons and for electric insulation of current-carrying components. Fig. 1 Typical microstructure of a 50Ag–50Mo contact. The light areas are silver, the dark areas molybdenum. 380× Fig. 2...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001827
EISBN: 978-1-62708-241-9
...Abstract Abstract Gas turbines and other types of combustion turbomachinery are susceptible to hot corrosion at elevated temperatures. Two such cases resulting in the failure of a gas turbine component were investigated to learn more about the hot corrosion process and the underlying failure...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001800
EISBN: 978-1-62708-241-9
.... 6 , 7 ). Stray current electrical discharge damage can occur due to the component constituting a transmission pathway to ground for welding currents, improperly grounded machinery electrical energy, or even lightning strikes. Fig. 6 SEM image of a remelted, arc-damage area at one fracture...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006834
EISBN: 978-1-62708-329-4
... 50 120 Plane grinding machine 55 130 Railcar bearings 60 140 Screens 80 175 Hammer crushers 60 140 Stone crushers 80 175 Impact crushers 80 175 Vibration motors 70 160 Wire-drawing calendar 65 150 Paper machine drum 55 130 Electrical driving motor 80...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006827
EISBN: 978-1-62708-329-4
... commonly presents during the reflow process of ball grid array (BGA)-based components. Even though this defect retains electrical integrity, it cannot provide sufficient mechanical strength; as a result, the package may fail with little mechanical loading or thermal stress ( Ref 17 ). Poor wetting...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003500
EISBN: 978-1-62708-180-1
... motor driven pump or compressor failures Table 3 Possible causes of electric motor driven pump or compressor failures System design and specification responsibility Component manufacturer's responsibility Shipping and storage responsibility Installation responsibility Operations...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001536
EISBN: 978-1-62708-229-7
... in the United States, with a combined generating capacity of 106,905 MWe. In 1990, they generated 20.6% of the nation's electrical energy demand. 1 Component failures occur from time to time in these plants, and the rigorous in-service inspection procedures to which the plant components are subjected often...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.matlhand.c9001453
EISBN: 978-1-62708-224-2
...Abstract Abstract While a chain sling was being used to lift a casting one of the links ruptured. The sling, reputed to be of the electrically-welded steel type, was at least eight years old and had been overhauled several times during its working life. Examination showed the links were scarf...