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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001487
EISBN: 978-1-62708-234-1
... at which time silver-bearing copper was not available. The use of hard-drawn silver-bearing copper for a rewind, in conjunction with special attention to blocking up the end windings, is confidently expected to effect a complete cure. Alternators Deformation Cu-Ag (Other, general, or unspecified...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0006436
EISBN: 978-1-62708-217-4
... that the failure of the pylon attachment stud was caused by general corrosion followed by SCC. The stud was not adequately protected against corrosion by the coating. It was recommended that the coating be applied to a thickness of 38 to 75 micron (1.5 to 3 mil) to provide long-time corrosion resistance...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001024
EISBN: 978-1-62708-214-3
... revealed several pits that appeared to have acted as fracture origin sites. Time to failure was determined using fracture mechanics. It was concluded that failure was caused by a fatigue crack that grew to critical length without detection. The crack originated at pits that resulted from the use...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001798
EISBN: 978-1-62708-241-9
.... encapsulant polymer degradation hydrolysis epoxy resin softening and flow differential scanning calorimetry with thermogravimetric analysis curing time epoxy resin Introduction Experimental Sections Results and Discussion Conclusion References References 1. Naito C. , Todd...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003532
EISBN: 978-1-62708-180-1
...Generic four-step contemporary practice for many metals and alloys Table 2 Generic four-step contemporary practice for many metals and alloys Surface Abrasive/size Load, N(lbf) Speed,rpm/direction Time, min Waterproof PSA paper 120/P120-, 180/P180-, or 240/P280-grit SiC, water...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
... neither pressure nor external heat and are recommended for mounting specimens that are sensitive to heat and/or pressure. Acrylic resins are a widely used castable resin, due to their low cost and short curing time, but they are generally unsatisfactory for failure studies, because shrinkage is a problem...
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
...: (Eq 19) Zn → Zn 2 + + 2 e − and (Eq 20) Cu 2 + + 2 e − → Cu The zinc initially becomes plated with copper; eventually, given enough time and reactants, the products are copper sponge and zinc sulfate solution. During corrosion, more than one oxidation...
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 an isolated pit on the outside of the floor tank of a liquid asphalt tank. The asphalt had been leaking for some time as the surrounding area was covered with deposits and the wall thinning was significant. Courtesy of S.R. Freeman, Millennium Metallurgy, Ltd. Fig. 8 Cathodic protection of a buried...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001491
EISBN: 978-1-62708-217-4
... the use of silica phenolic tape produced from flawed materials that went undetected by the quality control tests, which at the time, assessed tape strength properties in the warp rather than the bias direction. Once the nozzle manufacturer and its suppliers identified the problem, they changed...
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
... gun. Different mixtures are available, providing different curing times at various temperatures. Upon curing, the polymeric material is simply peeled from the surface to be examined. Resolution of the cured resin is on the order of 0.1 μm, and some mixtures are available that can be examined directly...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001391
EISBN: 978-1-62708-215-0
... (specifically, di-anhydride cure epoxies) exhibit T g s as high as 280°C (535°F). It is never advisable to subject epoxies to temperatures in excess of the T g for an extended period of time. The polymer binder from the thick-film ink on several delaminated samples was removed by squeezing the silver...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003533
EISBN: 978-1-62708-180-1
... and applied to the surface. Some manufacturers market kits where the resin is mixed automatically when using an application gun. Different mixtures are available, providing different curing times at various temperatures. Upon drying, the polymeric material is simply peeled from the surface to be examined...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0009222
EISBN: 978-1-62708-180-1
... handling heat treatment machining material selection mechanical design tool failure tool steel grade TOOL AND DIE BREAKDOWNS can rarely be studied with a conventional fracture-mechanics approach or stress-time analysis. Also, the lack of a complete and accurate log of manufacturing and service...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001517
EISBN: 978-1-62708-217-4
... to resin curing were the most similar in nature. This result indicated that it would be beneficial to examine humidity aged polyester specimens to determine if similar types if resin anomalies were present. Fig. 6 SEM photomicrograph of suspected resin anomaly within the fiber tows in an exterior...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001545
EISBN: 978-1-62708-236-5
... 304 UNS S30400 440C UNS S44025 Stress-corrosion cracking Transgranular fracture Because a component failure can result in plant shutdown, delays in delivery, or the introduction of costly restrictions, the time needed to find the failure's cause and to institute corrective action is very...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.steel.c9001668
EISBN: 978-1-62708-232-7
... is an autoclave system constructed of 316 stainless steel. The autoclave was used to cure special cements as part of an experimental program by providing a controlled pressure and temperature. A schematic representation of the charged system is shown in Figure 1 . At the time of failure, two systems were...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001099
EISBN: 978-1-62708-214-3
...Abstract Abstract Uncoated high-strength alloy steel cap screws retaining a cast aluminum (356.0) diffuser assembly in a centrifugal refrigerant compressor failed in a brittle manner a short time after the system was placed in operation. Evidence obtained during the failure analysis indicated...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001611
EISBN: 978-1-62708-219-8
... uptake, thorough cleaning of the weld joint area was required prior to the initiation of welding. This cleaning was observed and inspected by quality-assurance personnel as well as the welding team. At the time of the investigation, no approved welding procedure was available for examination...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001486
EISBN: 978-1-62708-234-1
... is only of the order of 0.002 in. during the same time. The extent of the pitting varies from engine to engine and may also differ on the liners of any one engine. Cavitation damage is more prevalent in engines in transport service, where speed variation is more pronounced, and the onset in some engines...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.rail.c9001665
EISBN: 978-1-62708-231-0
... — Causes and Cures,” Research Report No. 82 , Steel Founders' Society of America ( September 1975 ). 3. Briggs C. W. , Hot Tears in Steel Castings , Steel Founders' Society of America , Rocky River, Ohio ( 1968 ). 4. Bishop H. F. , Ackerline C. G. and Pellini W. S...