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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.auto.c9001625
EISBN: 978-1-62708-218-1
...Abstract Abstract Two acrylic-coated polymeric motorcycle components exhibited fisheye blemishes after painting. SEM and EDS results showed relatively high levels of sulfur and chlorine associated with the blemishes in both parts. This suggested some adherent residual substances, possibly...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0091678
EISBN: 978-1-62708-217-4
... treatment, followed by application of a coat of paint primer. During routine maintenance checks, a careful examination was suggested to look for damage to the protective coating, and any necessary repairs should be made by cleaning, priming, and painting. Severely corroded parts should be removed from...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0091674
EISBN: 978-1-62708-217-4
...) supported the conclusion that the failure of the hinge brackets occurred by SCC. The corrosion was caused by exposure to a marine environment in the absence of paint in stressed areas due to chipping. The stress resulted from the interference fit of the bushing in the lug hole. Recommendations included...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0046227
EISBN: 978-1-62708-217-4
... chemically milled section of the floor. An alkaline etch-type cleaner was used on the panels before chemical milling and before painting. Various tests and measurements indicated that the aluminum alloy used for the fuel-tank floors conformed to the specifications for 7178-T6. Low power magnification...
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
...Abstract Abstract This paper describes the investigation of a corrosion failure of bottom plates on an aboveground tank used for the storage of potable water. The tank was internally inspected for the first time after six years of service. Paint blisters and rust spots were observed...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001476
EISBN: 978-1-62708-229-7
... to the lower tubeplate on the opposite side. After a mishap, the paint had been burned off the upper half of the shell. Internally, most of the tubes were found to be twisted or bent. The casing of the pump used to circulate the cooling water was also found to be cracked after the mishap. All the evidence...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0047793
EISBN: 978-1-62708-217-4
... was observed on the damaged side. Particles of sand, paint, or plastic, fibers from the cartridge, brass, and steel were viewed in the brown residue on the filter cartridge under a low power microscope and later confirmed by chemical analysis. Large amount of iron was identified by application of a magnet...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0048665
EISBN: 978-1-62708-217-4
...Abstract Abstract The jackscrew drive pins on a landing-gear bogie failed when the other bogie on the same side of the airplane was kneeled for tire change. The pins, made of 300M steel, were shot peened and chromium plated on the outside surface and were cadmium plated and painted...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001706
EISBN: 978-1-62708-217-4
... of the pit. The crack reached the critical size and caused failure by stress-corrosion cracking (SCC) under static loading conditions in service. The failed beam was protected by a well adhering paint system. However, the presence of adequate amounts of corrosion preventive compound films (CPC...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001066
EISBN: 978-1-62708-214-3
... The pipe was removed from the system after cracks were observed in the painted coating. The entire 460 mm (18 in.) length of spool piece was sent for analysis. Visual Surface Examination Sample Selection Circumstances Leading to Failure A flanged 100 mm (4 in.) diam low-carbon steel...
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.process.c9001433
EISBN: 978-1-62708-235-8
... Abstract On attempting to manipulate or bend a boiler tube some 22 ft. long, sudden failure occurred at what appeared to be a butt weld in the tube. Externally, the weld reinforcement had been ground flush and the entire tube surface painted. Internally, the appearance and width of the heated...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.bldgs.c9001548
EISBN: 978-1-62708-219-8
...Abstract Abstract In 1975, a manufacturer was awarded a contract to produce modular air-traffic control towers for the U.S. Navy. The specifications called for painted steel siding, but the manufacturer convinced the Navy to substitute aluminum-bonded-to-plywood panels that were provided...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001113
EISBN: 978-1-62708-214-3
.... Circumstances Leading to Failure Specimen Selection Both plates exhibited cracks at the bottom-portion fillet-weld heat-affected zone (HAZ), or weld toe, of each diagonal and vertical angle brace ( Fig. 2 , 3 , 4 ). Microscopic observation at 30× revealed heavy rusting and evidence of primer paint...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001630
EISBN: 978-1-62708-236-5
... … … bal (a) Atomic absorption analysis (carbon by combustion analysis). (b) Energy-dispersive X-ray analysis Fig. 15 Close-up view of fracture surface shown in Fig. 14 . The blue paint on the fracture surface is arrowed. Fig. 1 Octopus ride after the accident. Courtesy...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001162
EISBN: 978-1-62708-220-4
.... There was no question of the cause of failure being corrosive attack by the contents but rather the condition of the material. Longitudinal sections were cut from the externally white painted tubes with scissors and mounted in casting resin. They were wet ground on silicon carbide paper down to grade 600...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0089256
EISBN: 978-1-62708-235-8
..., the paint on the forgings was stripped prior to performing the magnetic particle inspection, since the thickness of the paint slightly exceeded the maximum allowable 0.05 mm (0.002 in.) thick paint layer. It should be noted that prior annual inspections, performed at a contracted magnetic particle...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001455
EISBN: 978-1-62708-234-1
... this form of attack. 3 , 4 , 5 , 7 V. E. Carter and H. S. Campbell 7 describe comparison tests using specimens which, after grit blasting, were sprayed with an 0.005 in. coating of 99.5 % Al, 99.99 % Al, or Al/1 % Zn alloy, while others were protected with a four-coat paint system, in accordance...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001507
EISBN: 978-1-62708-217-4
... at the main origin site, were similar in nature. Figures 5 and 6 show other defects on the inner surface of the shank. The surfaces of all the defects displayed green-coloured zinc chromate paint and remnants of zinc chromate were also found within the secondary fissures. The zinc chromate is applied...
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
...). The interior surfaces of all three hoppers had been painted before placement in service, after 7 days of service, and after 60 days of service. All exterior surfaces were covered with a gray epoxy coating of the type used at the prill manufacturing plant. There were no specifications for the interior coatings...