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Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001778
EISBN: 978-1-62708-241-9
... been subjected to bending and unbending loads near the saddle, as fully loaded or empty buckets traveled access the conveyor. The SEM studies confirmed that the fracture had been caused by initiation of fatigue cracks in the decarburized zone under conditions of repeated bending and unbending stresses...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001580
EISBN: 978-1-62708-229-7
... Abstract Laser surface mapping of a canister closure weld provided data that was used to generate three-dimensional images of the weld failure. These images were invaluable in that they allowed people who did not have access to the canister to see the anomaly in great detail. This aided...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001583
EISBN: 978-1-62708-217-4
... verification, accessed overall workmanship, and measured the respective surface roughness of the rods in an effort to identify any discrepancies. Next, mechanical testing was performed, followed by optical and electron microscopy, and chemical analysis. Finally, ARL performed laboratory heat treatments...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001713
EISBN: 978-1-62708-220-4
... a stainless steel shell that is encased by a mild steel water jacket. Two access covers on top of the blender are used for loading raw materials, and one port at the bottom is used for off-loading product. On each side of the blender there are support tubes, which also contain piping. On one side...
Image
Published: 01 June 2019
Fig. 3 The damage to the blender in the accident was extensive. This photograph shows the 2 top loading ports on the blender, the shredded water jacket, and the hold-down tabs for the access covers. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001639
EISBN: 978-1-62708-229-7
...-vapor interface Liquid-sludge interface Upper weld of lower knuckle (the transition from the tank wall to the tank bottom) of primary tank (5% of accessible circumference) Lower knuckle base material External surface of primary tank (including vapor space above the liquid) Vertical...
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
... the effect of electrical discharge on crater dimensions and density and the role that thermoelectric voltage potentials may have played. References References 1. Koyo Ball & Roller Bearings: Failures, causes and countermeasures . http://www.koyousa.com/brochures/pdfs/catb3001e.pdf . Accessed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001398
EISBN: 978-1-62708-229-7
... to concentrate, prior precipitation of sulphate takes place to act as a chemical seal and prevent access of the concentrated sodium hydroxide to the region of stressed metal where cracking would otherwise occur. In this instance it is presumed that the flexing action of the bellows would rupture any...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047125
EISBN: 978-1-62708-217-4
... in the cycle. Detection was delayed because the inner surface was not readily accessible for inspection. Propagation of the fatigue crack to the outer surface of the wheel half may have been retarded because the surface had been shot peened during manufacture. A flat, shiny area (arrow 6, View B-B, Fig. 1...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001395
EISBN: 978-1-62708-220-4
.... Solutions are often stagnant in a crevice, the sludge and impurities deposited there impede the access of oxygen which is necessary to keep the surface of stainless steels passive and so maintain the corrosion resistance. It is also advisable, as far as possible, to avoid backing rings and crevices...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001064
EISBN: 978-1-62708-214-3
... brought in by tanker. This potable water was resident in the tanks for 3 months. Leaks in the tank walls were neither noted nor found. Areas of iridescent staining and light corrosion around welds in an accessible tank were investigated. Although pitting could be found near welds in a stainless steel...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c9001423
EISBN: 978-1-62708-233-4
... the cylindrical body section and thus gained access to the rim to result in cracking on the external surface. The immunity of austenitic stainless steels to stress corrosion cracking cannot be guaranteed in a chloride environment, particularly when operating temperatures are such as could lead to evaporative...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001411
EISBN: 978-1-62708-234-1
..., the ends of the pipe were closely butted, there being, in fact, no penetration of the joint material between the ends. This feature had restricted access of the water to the joint and, consequently, the extent of the dezincification (shown by the arrow) is not so pronounced. A photomicrograph showing...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001103
EISBN: 978-1-62708-214-3
... the stress system in the bolt and a corrosive agent with access to the bolt shank combined to produce cracking. The loaded bolt contained tensile and torsional stresses, which compounded to give high stress concentrations in the radiused part of the shank just below the bolthead and at the bottom...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c0048777
EISBN: 978-1-62708-229-7
... nozzles, is shown in Fig. 1 . The nozzles are numbered 1 to 3, moving away from the head. Fig. 1 Crack path in a failed utility boiler drum. Investigation Field examination occurred 2 days after the fracture. The fracture surfaces between nozzles 1 and 2 and through the manway (access...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0059932
EISBN: 978-1-62708-236-5
..., it was desirable to test the shaft from the long end as well as from the short end. In the assembled machines, the only access was to the long end of the shaft. The same standard was used from the long end of the shaft, but an instrument having higher sensitivity was required to produce a full-screen signal from...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001483
EISBN: 978-1-62708-225-9
... centrifugal force acting on the strips. It is also apparent from the alloying that occurred that molten copper had free access to the fracture surfaces subsequent to separation. This case is not an example of the usual type of failure where stressed steel at approximately room temperature ruptures rapidly...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001063
EISBN: 978-1-62708-214-3
... if kept stagnant for extended periods. The aggressiveness increases if the stagnant water is kept closed, without access to atmospheric oxygen. Under such conditions, pitting results ( Ref 1 ). Corrosion of the carbon steel contributed to the oxygen removal in the water. Once the pits were initiated...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001852
EISBN: 978-1-62708-241-9
... Technology Online. http://www.moldmakingtechnology.com/articles/050503.html . Accessed May 2009 2. Durney L.J. : Electroplating Engineering Handbook—Fourth Edition , edited by and published by Van Nostrand Reinhold Company , New York ( 1984 ) 3. Stein B. : A practical guide...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001709
EISBN: 978-1-62708-229-7
... fatigue fracture Introduction The present boiler has been set into operation at a power generation plant since 1985. It is a suspension type provided on two of its four sides with 30 IK boxes as accesses for retractable soot blowers to clean up the inside of the boiler using steam. Some...