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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
... the power lines or a short circuit to ground. Circumstances Leading to Failure Three instances of service entrance arcing faults associated with aluminum wiring are known to the authors. Incident 1 A fire occurred at a residence. Associated with the fire was an electrical outage in the homes...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001283
EISBN: 978-1-62708-215-0
... Leading to Failure The majority of the first 50 forgings made from the same batch exhibited visible cracks and random burstings in both the preforging and finish forging stages ( Fig. 1 ). Fig. 1 Preforged and finish forged parts, showing cracks and bursts at various locations. Pertinent...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001042
EISBN: 978-1-62708-214-3
... Abstract Failure occurred in a type 304 stainless steel leaf spring attached to the undercarriage assembly of an airport shuttle train. Failure analysis showed that the fracture was caused by low-cycle, reversed bending fatigue. The stresses leading to failure were imposed by poor alignment...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001809
EISBN: 978-1-62708-180-1
... Abstract This article discusses the classification of sliding bearings and describes the major groups of soft metal bearing materials: babbitts, copper-lead bearing alloys, bronze, and aluminum alloys. It provides a discussion on the methods for fluid-film lubrication in bearings. The article...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001296
EISBN: 978-1-62708-215-0
... Abstract A 52000 bearing steel valve guide component operating in the fuel supply system of a transport aircraft broke into two pieces after 26 h of flight. The valve guide fractured through a set of elongated holes that had been electrodischarge machined into the component. Analysis indicated...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001289
EISBN: 978-1-62708-215-0
... in.) diam medium-carbon chromium steel rolled bar was heat treated in accordance with specification requirements. These parts are used for critical applications in helicopters, and thus utmost care is necessary to ensure quality from the melting stage onward. Circumstances Leading to Failure Magnetic...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001073
EISBN: 978-1-62708-214-3
... on chain drive shafts for winding fibers exhibited excessive wear. Fig. 1 Worn replacement sprocket. Circumstances Leading to Failure The original sprockets supplied with the equipment had a satisfactory life. These sprockets, manufactured in Europe, could no longer be obtained. Locally...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001551
EISBN: 978-1-62708-233-4
... editions of a major weekly magazine was breaking pinions (shouldered shafts) on rolls. The printing company had virtually used up its supply of repair parts, and two more broken rolls would have forced a shift to production on a much slower press. Lead time for delivery of new spare rolls was three months...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006806
EISBN: 978-1-62708-329-4
... in the bearing. In a hydrodynamic bearing carrying a steady load, the grooves should be located in the half of the bearing behind the location of the minimum fluid-film thickness. As shown in Fig. 3 , the grooves may be circumferential, axial, or spiral in orientation. If they are supplied with lubricant from...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001808
EISBN: 978-1-62708-241-9
... environment or a lack of proper water treatment can lead to catastrophic failures. The key in avoiding MIC-related problems is to consider bacterial problems at the start of the construction design phase. If a process condition is to be changed, its potential impact on bacteria growth should be considered...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006825
EISBN: 978-1-62708-329-4
... practice for an intended application, failures do occur in power plants. Deteriorated performance and repetitive failures of pressure parts of a boiler is a very common issue. Failures in a steam-generating system lead to unscheduled plant shutdowns, increased maintenance and repair costs, reduced plant...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003549
EISBN: 978-1-62708-180-1
... of ac or dc current flow. An external battery was used to impress a voltage. Voltage and current were recorded with the external power supply applied and removed. There was no evidence of stray currents or electrical discharge. It was noted that the ambient temperature and slow or stagnant flow...
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
... strips caused the steel to be rejected. An FFT analyzer was set up to determine the frequency of the sound, the vibration frequency of the induction furnace, and the frequency of the current being supplied to the induction coils. In all three cases the frequency was 7250 cycles/s. Since the plate...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006813
EISBN: 978-1-62708-329-4
... for cooling can change over a period of time, through seasonal variations, or from an unpredictable accident. Long lead time in power-plant erection can have a considerable effect on the tubes. Heat exchangers may be completed and sent to the field years before the remainder of the plant is completed and put...
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
... (cast cobalt-base superalloy) Introduction The gas turbine is a versatile source of shaft or propulsion power in a growing number of applications. It can be used in several modes in critical industries, such as power generation, oil and gas, process plants, aviation, as well as smaller related...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003523
EISBN: 978-1-62708-180-1
... with the principles for failure analysis of material incidents that are less complex than a large-scale accident. The article provides a brief review of some general concepts on the use of modeling which can be a very powerful tool for information pertaining to the reconstruction of an accident where the model can...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001817
EISBN: 978-1-62708-180-1
... used for cooling can change over a period of time, through seasonal variations, or from an unpredictable accident. Long lead time in power-plant erection can have a considerable effect on the tubes. Heat exchangers may be completed and sent to the field years before the remainder of the plant...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001667
EISBN: 978-1-62708-235-8
...-colored oxidized surface region was observed adjacent to the circumferential butt weld joining the two cylinders. This led to the concern that oxygen was introduced into the part during the welding procedure and caused alpha case formation of the surface of the titanium which could lead to detrimental...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001055
EISBN: 978-1-62708-214-3
... Brittle fracture Background A welded 1830 mm (72 in.) diam ASTM A283 grade D pipe underwent catastrophic failure. Applications The failed pipe was part of a 6 km (4 mi) line drawing and conducting river water to a water treatment plant. Circumstances Leading Tofailure The failure...
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
... are not missed. For example, a large number of electric appliance motors failed by seizure when elastomeric components, which had been added to reduce noise and vibration, rapidly disintegrated. A large claim was filed against each of the companies in the component supply chain for providing parts...