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moisture-induced damage

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Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006929
EISBN: 978-1-62708-395-9
...-resin composites. diffusion moisture concentration moisture-induced damage plastics resins water absorption THE ADVERSE EFFECT of moisture on performance in a structural application is a critical aspect of plastics corrosion resistance. Plastics are more resistant to corrosion than...
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
.... In less than one year, the panels began to delaminate and the aluminum began to crack. It was found that the failure was the result of chloride-induced intergranular corrosion caused by chemicals in the adhesive and excessive moisture in the wood introduced during manufacturing. Adhesive joints...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006909
EISBN: 978-1-62708-395-9
... at cryogenic temperatures. Freeze and freeze-thaw (F-T) exposure are of particular concern to engineers and designers of FRP structures, especially in the presence of moisture. Low-temperature excursions, as experienced during thermal cycling, accentuate the effects of residual-stress-induced damage (i.e...
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
... (min) 23 (min) Discussion The intergranular microcracking failure mode found by SEM examination of the fracture surface, combined with the underbead cracks found by microstructural examination and the paint found in the cracks, showed that the cracks resulted from bydrogen-induced damage...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001143
EISBN: 978-1-62708-229-7
... such as those created by particle impacts on the blades. “Failure due to fatigue” has become the popular catch-all phrase for many failures experienced by turbine blades. In the assessment of financial liability, however, the relationship of fatigue inducing, time varying stresses to other damage mechanisms...
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
.... The slides are then retained for laboratory evaluation using higher-powered optical microscopes or a scanning electron microscope (SEM). Visual Examination of General Physical Features Insulation had been stripped off as part of a previous fire-damage inspection, which revealed no sensitization...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001731
EISBN: 978-1-62708-217-4
... intact to prevent, insofar as possible, the exposure of bare steel to moisture or high humidity atmosphere. Lubricated surfaces should be cleaned frequently and fresh lubricant applied to prevent corrosion as well as to prevent damage by excessive friction. Extreme care is required to prevent...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003552
EISBN: 978-1-62708-180-1
... Abstract This article provides an overview of the classification of hydrogen damage. Some specific types of the damage are hydrogen embrittlement, hydrogen-induced blistering, cracking from precipitation of internal hydrogen, hydrogen attack, and cracking from hydride formation. The article...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001839
EISBN: 978-1-62708-241-9
... treatment. Use inputs with low moisture or hydrogen content, in general. Considering the delayed nature of cracking that transpires in the event of hydrogen-induced damage, it is strongly recommended that tensile testing of steel coils be preferably undertaken 24–48 h after processing for a reliable...
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
... Abstract Piping and structural components used in space launch facilities such as NASA's Kennedy Space Center and the Air Force's Cape Canaveral Air Station face extreme operating conditions. Launch effluent and residue from solid rocket boosters react with moisture to form hydrochloric acid...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006784
EISBN: 978-1-62708-295-2
... for engineering managers, quality engineers, design engineers, and manufacturing engineers and technicians. Some prevention strategies for design and manufacturing problem-induced hydrogen embrittlement are also provided. Overview of Hydrogen Damage Processes Hydrogen is known to cause various problems...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003570
EISBN: 978-1-62708-180-1
... Abstract Erosion of solid surfaces can be brought about solely by liquids in two ways: from damage induced by formation and subsequent collapse of voids or cavities within the liquid, and from high-velocity impacts between a solid surface and liquid droplets. The former process is called...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001354
EISBN: 978-1-62708-215-0
... of sodium on crack surfaces, which is indicative of NaOH-induced stress-corrosion cracking. Failure was attributed to superheater problems that resulted in caustic carryover from the boiler. Two options for disk repair, installing a shrink-fit disk or applying weld buildup, were recommended. Weld repair...
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
... and techniques followed in failure investigation of boilers and related equipment are discussed. The article is framed with an objective to provide systematic information on various damage mechanisms leading to the failure of boiler tubes, headers, and drums, supplemented by representative case studies...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001904
EISBN: 978-1-62708-217-4
... 10,000 h. Cumulative damage resulting from a previous accident could have occurred too. Because of this accident, inspectors were instructed to examine threaded zones of eyebolts by magnetic particle inspection after every 100 h in service. A maraging steel drive shaft of a helicopter also failed because...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001810
EISBN: 978-1-62708-180-1
... in the presence of dirt and moisture. General rusting and deep pits can be seen in this drawn cup, as well as polished indentations resulting from abrasive action under vibratory conditions. The roller spacing is indicated by the spacing of the polished indentations. Fig. 4 Bearings that were damaged...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006937
EISBN: 978-1-62708-395-9
... effectively cause the light ray to be shifted sideways ( Fig. 5 ). Unless understood and accounted for, this effect can create significant confusion in certain geometries. Fig. 5 Moisture-induced refractive index gradient Birefringence Photoelastic measurements and birefringence are subjects...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003553
EISBN: 978-1-62708-180-1
... damaging in conjunction with environmental attack can be produced in many different types of manufacturing operations. In heat treating, for example, improper practices that may thermally induce conditions for SCC include: Failure to preheat when required Overheating during austenitizing...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006871
EISBN: 978-1-62708-395-9
... are susceptible to the effects of weather. These weather factors that contribute to degradation of plastics include heat and temperature variations, humidity and moisture variations, solar radiation, oxygen, microbiologic attack, and other environmental elements. The results of exposing plastics...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006757
EISBN: 978-1-62708-295-2
... such as a ball or roller bearing track or rolling member, or it may induce overall heating and softening of the metal if the current is large and sustained, which leaves a thin, dark oxide layer on the surfaces ( Fig. 3 ). Porosity observed on a component that has failed or suffered damage may...