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Airframes, corrosion

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Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001030
EISBN: 978-1-62708-214-3
... MoS2). Control of machining parameters to prevent formation of brittle martensite, use of galvanically compatible fasteners, and use of an alternate lubricant were recommended. Airframes, corrosion Fasteners Jet planes Marine environments Military planes Solid lubricants Ti-6Al-4V UNS...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0091644
EISBN: 978-1-62708-217-4
... frames Attachment bolts Machining coolants PH 13-8Mo UNS S13800 Stress-corrosion cracking During a routine inspection on an aircraft assembly line, an airframe attachment bolt was found to be broken. The bolt was one of 12 that attach the lower outboard longeron to the wing carry-through...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0092142
EISBN: 978-1-62708-217-4
...Abstract Abstract During a routine inspection on an aircraft assembly line, an airframe attachment bolt was found to be broken. The bolt was one of 12 that attach the lower outboard longeron to the wing carry-through structure. Failure occurred on the right-hand forward bolt in this longeron...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001027
EISBN: 978-1-62708-214-3
... cut from the yoke in the region of the cracking indicated that the failure was caused by fatigue-crack initiation and growth from severe corrosion damage to a pillow-block bolt hole. Corrosion occurred because of failure of the protection scheme. An upgraded corrosion protection scheme for the bolt...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001649
EISBN: 978-1-62708-234-1
... airliner. The aircraft had been brought in for service, and the standard wing de-mating process was initiated to evaluate the extent of corrosion to the airframe. For reasons that were not clear at the time of the investigation, the complete service protocol was cancelled, and the decision was made...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001292
EISBN: 978-1-62708-215-0
... to the airframe. It also carries side loads. During a before-flight inspection, a crack was detected in one arm of the right-hand horizontal brace of the nose landing gear shock strut. The crack was in the aft arm of the twin-arm brace approximately 25 mm (1 in.) from the shock strut barrel. This shock...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001021
EISBN: 978-1-62708-214-3
... in other spars in service, the Royal Australian Air Force requested that the crack growth rate during service be determined. The loading history of the aircraft was made available in the form of flight by-flight records of the counts from the vertical accelerometer sensors fitted to the airframe...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006815
EISBN: 978-1-62708-329-4
.... By careful examination of the hardware, typically in the metallurgical laboratory, the failure analyst may determine that a component failed in fracture, wear, corrosion, distortion, or in various combinations of those modes. Investigation in the laboratory can provide the supporting evidence to distinguish...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006821
EISBN: 978-1-62708-329-4
.... In aircraft design, there is also a need for materials to be lightweight and to possess the necessary properties, such as high strength, corrosion resistance, fatigue resistance, and so on. Many aerospace materials have been used for decades, and their performance and material characteristics are well...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006785
EISBN: 978-1-62708-295-2
...Abstract Abstract Stress-corrosion cracking (SCC) is a form of corrosion and produces wastage in that the stress-corrosion cracks penetrate the cross-sectional thickness of a component over time and deteriorate its mechanical strength. Although there are factors common among the different forms...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006834
EISBN: 978-1-62708-329-4
... 0–0.025 0–0.035 0.90–1.20 0.15–0.30 … Some corrosion-resistant bearing steels, group IV Table 5 Some corrosion-resistant bearing steels, group IV Steel name WN material number Composition, wt% C Si Mn P S Cr Mo Ni N V AISI 440B … 1.1...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003516
EISBN: 978-1-62708-180-1
.... Airframes that reach their “safe-life” are simply retired from service. The safe-life approach successfully addresses many fatigue problems, but has several shortcomings. Fatigue testing is typically conducted on components that are in pristine condition. As a result, the component replacement time...
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
...Abstract Abstract This article commences with a discussion on the characteristics of stress-corrosion cracking (SCC) and describes crack initiation and propagation during SCC. It reviews the various mechanisms of SCC and addresses electrochemical and stress-sorption theories. The article...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006819
EISBN: 978-1-62708-329-4
... , Int. J. Pressure Vessels Piping , Vol 79 , 2002 , p 361 – 371 10.1016/S0308-0161(02)00023-6 104. Prueter P.E. , Sutton N.G. , and Kowalski P.J. , Evaluating the Flaw Tolerance and Ductile Tearing Resistance of Austenitic Stainless-Steel Welds , Proceedings of NACE Corrosion...