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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.c9001798
EISBN: 978-1-62708-241-9
...Abstract Abstract The crosslinked epoxy resin encapsulant protecting an electromagnetic valve coil failed during long-term storage and was examined to determine the cause. The investigation included fault-tree analysis, FTIR and EDX spectroscopy, and differential scanning calorimetry...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0048498
EISBN: 978-1-62708-234-1
...Abstract Abstract A graphite-epoxy tapered-box structure, which consisted of two honeycomb skin panels fastened to a spanwise spar with intermediate chordwise ribs, fractured during testing. Hinge-line deflection of the front spar was revealed. Through-thickness cracks in the forward...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0045926
EISBN: 978-1-62708-235-8
...Abstract Abstract A batch of bimetal foil/epoxy laminates was rejected because of poor peel strength. The laminates were manufactured by sintering a nickel/phosphorus powder layer to a copper foil, cleaning, then chromate conversion coating the nickel-phosphorus surface, and laminating...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001059
EISBN: 978-1-62708-214-3
... or replacement, was recommended to prevent chloride buildup. Painting of the steel surface with an epoxy-phenolic or epoxy-coal tar was also suggested. Chemical processing industry Columns (process) Marine environments 316 UNS S31600 Stress-corrosion cracking Pitting corrosion Background Visual...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.machtools.c0045903
EISBN: 978-1-62708-223-5
... 75 mm (3 in.) from the origin along the wall of a hydraulic-oil bleed hole. Investigation with a SEM showed corrosion pits along the bleed hole wall, but oxidation and corrosion prevented review of microfractographic details. Vacuum epoxy encapsulation, sectioning of the bleed hole...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001765
EISBN: 978-1-62708-241-9
... impoundment under the tank bottom along the periphery inside the ring wall and failure of water side epoxy coating. Various measures to prevent such failures in the future are recommended. water storage tank corrosion coating defects carbon steel pitting and holes EDX analysis coating thickness...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001656
EISBN: 978-1-62708-219-8
... and epoxy-coated bar. Chlorides Reinforced concrete Reinforcement bars Zinc coatings Steel reinforcing bar Corrosion fatigue Introduction Procedure and Results Conclusions Acknowledgments References References 1. Roper H. and Hetherington G. , “Fatigue Tests...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c0091598
EISBN: 978-1-62708-218-1
... with a highly concentrated ammonium nitrate solution. Recommendations included the cost-effective solution of applying a three-coat epoxy-type coating with a total dry thickness of 0.3 mm (0.013 in.) to the interior surfaces of the hoppers. Ammonium nitrate Epoxy Hoppers ASTM A611 ASTM A570...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001493
EISBN: 978-1-62708-235-8
...-expansion between the epoxy board and copper caused the thin plating to crack. During electrical testing of a four-layer circuit board, an open electrical circuit was found between the plated through-holes. Plating discontinuity was caused by poor drilling using a dull drill with improper speed (rpm...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0006402
EISBN: 978-1-62708-217-4
... to anodizing. A hot inhibited alkaline cleaner was also recommended during cleaning prior to anodizing. The panels should be dichromate sealed after anodizing. The use of deionized water was also recommended during the dichromate sealing operation. In addition, the use of an epoxy primer prior to shipment...
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
... polymer-based contamination. The consistency of a concentrated film or layer of amorphous polymer film at the metallization interface suggested that the epoxy binder in the thick-film ink was neither homogeneous nor stable. Resin separation from the epoxy binder created an oily, nonadherent film...
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
... aluminum etched with aqueous 0.5% hydrofluoric acid Fig. 11 Light micrographs of specimens of 1215 carbon steel that were salt bath nitrided and mounted in different resins. (a) Epomet thermosetting epoxy resin. (b) Phenolic thermosetting resin. (c) Methyl methacrylate thermoplastic resin. (d...
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
... effects. The most common mounting method uses a device, called a mounting press, to provide the required pressure and heat to encapsulate the specimen with a thermosetting or thermoplastic mounting material. Common thermosetting resins include phenolic, diallyl phthalate, and epoxy, while methyl...
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
... patterns, were evident in these areas. Fractographs of these anomalous areas were then compared to previous fractographic data obtained on epoxy composite specimens. The fracture characteristics on humidity aged epoxy specimens and on epoxy specimens in which the prepreg had been exposed to humidity prior...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003572
EISBN: 978-1-62708-180-1
... (such as phenolics, epoxy, etc.) may have low wear rates and higher strength than those with thermoplastics because a higher ratio of fiber is achievable with a thermoset matrix. Incorporation of fillers also can modify wear resistance of polymers up to the order of four. Solid lubricants mostly reduce wear...
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
... the conventional simplified one-dimensional (1-D) model of a solder joint series stiffness system. External or passive loading from the component/package can be expressed as a force (Γ DB ) or displacement ( u DB ) with a loading rate ( u ̇ DB ). Due to the strain-rate insensitivity of epoxy resin...
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
... through the rotor blade, showing the shape of the extrusion and the epoxy attachment to part of a pocket. Fig. 1 Plan diagram of the main rotor blade, showing the aluminum extrusion spar, the 26 fiberglass trailing-edge pockets, the hub and endcap fittings, and the approximate location...
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
... sludge storage tank during repairs. A structural epoxy will be applied to the reinforced concrete. Courtesy of S. Paul, CorrTech, Inc. Fig. 5 Two views of severe corrosion of wastewater tunnel structure. Note the failed lining repairs. Courtesy of S. Paul, CorrTech, Inc. Fig. 7...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001696
EISBN: 978-1-62708-234-1
... in service approximately ten years, and is similar to the tubing used in LC-39B's GO 2 System and B/A Line. The tubing was specified to be coated with either a nitrile-rubber-base, aluminum pigmented coating or a polyamide epoxy coating with an aliphatic polyurethane topcoat. The coatings are required...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001721
EISBN: 978-1-62708-225-9
.... The localization of the cracks to the two areas indicated in Figure 1 corresponds to possible areas on the bonnet screws where the soil or corrosive solution could be in direct contact with them. Visual inspection of the spray on epoxy coating placed on the valves by the manufacturer indicated that the coating...