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Flexible couplings

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Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001090
EISBN: 978-1-62708-214-3
... damage resulted in high mean tensile stresses upon which were superimposed cyclic stresses, with fatigue failure the final result. Bellows Flexible couplings Cold-worked stainless steel Fatigue fracture A double-flanged, 80 mm (3 in.) ID stainless steel flexible pump connector...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001052
EISBN: 978-1-62708-214-3
..., and no further cracking occurred. Aircraft engines Bellows Exhaust systems Flexible couplings Weldments 321 UNS S32100 Fatigue fracture The flexible bellow in a type 321 stainless steel welded exhaust hose assembly exhibited poor resistance to cracking and failed...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001851
EISBN: 978-1-62708-241-9
... Abstract Shaft misalignment and rotor unbalance contribute to the premature failure of many machine components. To understand how these failures occur and quantify the effects, investigators developed a model of a rotating assembly, including a motor, flexible coupling, driveshaft, and bearings...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001561
EISBN: 978-1-62708-229-7
... and weld material, in addition to fractography, EPR testing and optical microscopy in discerning the mode of failure. Various effects of Cl-, O2 and MnS are discussed. Results indicated that the cause of failure was the severe sensitization coupled with probable contamination by S and possibly by Cl...
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
... direction of rotation was such that, under normal operating conditions, the journal loads were imposed on the top halves of the bearings. A flexible coupling was interposed between the turbine rotor and the pinion while the coupling between the main gear wheel and the alternator rotor was of the solid...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001797
EISBN: 978-1-62708-241-9
... most popular one is the engine distribution system. Such systems are flexible, and their dynamic response is affected by the operating speeds. Several authors were interested in computing the dynamic response of cam–follower system [ 1 – 4 ]. A crucial point in the design of the system is to ensure...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006829
EISBN: 978-1-62708-295-2
... contact between balls and raceways in bearings and between mating surfaces in oscillating bearings and flexible couplings. In general, fretting occurs between two tightly fitting surfaces that are subjected to a cyclic, relative motion of extremely small amplitude ( Ref 1 , 2 ). For oxidizing...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001805
EISBN: 978-1-62708-241-9
... intentionally loaded until fracture. Analysis of those fracture surfaces revealed microvoid coalescence as shown in Fig. 4 , indicating the as-manufactured condition was not inherently brittle, and confirmed that the failure mode was coupled with a service related issue. Unused exemplar scissors were next...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006797
EISBN: 978-1-62708-295-2
... also undertaken to consider the alternative possibility that the forces of an explosion originating elsewhere may have caused the deformation and fracture of this component. Some gas appliance flexible connectors manufactured and sold during the 1960s and 1970s are known to be susceptible to...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006788
EISBN: 978-1-62708-295-2
... less), consistent with the corrosion damage generally observed across the internal surface of the pipe in the field. The overall metabolism of this biofilm community was based on the oxidation of cathodic hydrogen released by the oxidation of iron coupled with the reduction of carbon dioxide in the...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006757
EISBN: 978-1-62708-295-2
... topography. This often involves arranging lights until the desired effect is shown in an exaggerated manner. The lighting from photoflood or similar lamps often results in a suppression of the surface features that are desired. Flexible fiber-optic lighting is often the most appropriate method of...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006769
EISBN: 978-1-62708-295-2
... either the high-vacuum conventional imaging mode or in the low-vacuum/variable-pressure mode, making them extremely flexible for all types of investigations. Low-voltage imaging, that is, less than 5 kV accelerating voltage, is also very effective at imaging poorly conducting samples, and it is in this...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... petrochemical plant, a service business, or a government agency), but companies committed to Six Sigma have reported significant gains in productivity with simultaneous improvements in organizational culture ( Ref 9 – 11 ). More recently, Six Sigma practices have been coupled with lean manufacturing concepts in...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006785
EISBN: 978-1-62708-295-2
...) Rotating equipment that is out of balance Imposing loads beyond what is specified by the original equipment manufacturer’s specifications Misalignment of gears, splines, or couplings With respect to the prevention or mitigation of SCC, or the investigation of an SCC failure, it is important to...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006771
EISBN: 978-1-62708-295-2
... by XPS include metals, lubricants, semiconductors, metal oxides, glasses, ceramics, catalysts, plastics/polymers, coatings/thin films, and paper. Because the technique is so flexible in its sample-handling capabilities, the industries served by XPS are quite varied. Application areas include bond...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006782
EISBN: 978-1-62708-295-2
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
... on parts with parallel sides Sensitivity is reduced by rough-surface parts, and odd-shaped pieces are difficult to analyze; a skilled operator is required. Most exams require fluid coupling. Can be applied either in through-transmission two sides or reflection mode single side. Good sensitivity in...