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Landing gear, corrosion

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Published: 01 August 1999
Fig. 22 Stress-corrosion cracking (SCC) in an aluminum alloy 7079-T6 main landing gear H-link. (a) Overall view of H-link. (b) Pitting and intergranular corrosion that initiated SCC. Source: Ref 17 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130351
EISBN: 978-1-62708-284-6
... Abstract This chapter presents various case histories that illustrate a variety of failure mechanisms experienced by the high-strength steel components in aerospace applications. The components covered are catapult holdback bar, AISI 420 stainless steel roll pin, main landing gear (MLG) lever...
Image
Published: 01 November 2012
Fig. 45 17-4 PH stainless steel main landing gear deflection yoke that failed because of intergranular stress-corrosion cracking. (a) Macrograph of fracture surface. (b) Higher-magnification view of the boxed area in (a) showing area of intergranular attack. Courtesy of W.L. Jensen, Lockheed More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460227
EISBN: 978-1-62708-285-3
... to the helicopter. Installing the mount bolts can damage the coating, or the coating may become damaged over time. The resulting corrosion leads to material loss. Fig. 9.1 Magnesium gear box housing showing damage to the pads. Courtesy of the Army Research Laboratory In this example, the gearbox pads...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040001
EISBN: 978-1-62708-428-4
... and benefits thermal spray provides to society with examples from the following industries: turbine, marine and atmospheric corrosion, renewable energy, oil sands, automotive, electronic and semiconductor, biomedical, landing gears (replacement of hard chrome with thermal spray), primary metals/steel, paper...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.9781627083010
EISBN: 978-1-62708-301-0
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130043
EISBN: 978-1-62708-284-6
... or localized transformation to martensite and other transformation products—resulting in hard spots. In Fig. 2 , a large gear was ground after heat treatment. Because of abusive grinding, local temperatures exceeded the austenitization temperature, and transformation to martensite occurred upon cooling...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200007
EISBN: 978-1-62708-354-6
... 200 Striker Assembly 400 181 Draft Gear (Cast Steel Parts) 400 181 Rear Stop and Center Filler 436 198 Total 16,178 7,338 Figure 2-1 schematically shows a number of important railroad parts and assemblies. The side frame and the coupler are the only components normally...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250257
EISBN: 978-1-62708-345-4
.... Examine functional surfaces of gear teeth and bearings and record their condition. Before cleaning the parts, look for signs of corrosion, contamination, and overheating. Explain analysis objectives to the attending technician. Review the gearbox assembly drawings with the technician, checking...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280339
EISBN: 978-1-62708-267-9
... perceptions and thoughts on one or a few pieces of paper. Business practices are geared to the concept of the visual and instant presentation of a result, no matter how complex the concept leading to the result may be! It should be apparent by comparing the charts of Figs. 15.1 and 15.2 that the depiction...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2022
DOI: 10.31399/asm.tb.tstap.t56040020
EISBN: 978-1-62708-428-4
...). Advanced tribological systems for reduction of friction, oil consumption and pollutant emissions, and improved performance: power train (engine and gear), wheel suspension, drivetrain, and brakes. Many sub-systems that need lubrication are actually re-designed and engineered with the aim of operational...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870099
EISBN: 978-1-62708-299-0
... Abstract Environmentally assisted cracking is a generic term that includes various cracking phenomena such as stress-corrosion cracking (SCC), corrosion fatigue cracking, and liquid-metal embrittlement. This chapter describes these cracking mechanisms beginning with SCC and the factors...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.tb.hpcspa.t54460277
EISBN: 978-1-62708-285-3
... in the Defense Industry,” in this book. One of the successful applications for cold spray is in repair of magnesium alloy parts ( Ref 11.1 – 11.3 ) for U.S. Army and Navy aircraft components, such as fan blades, landing gears, transmission and gear box housing for rotorcraft, and advanced fixed-wing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.tpmpa.t54480353
EISBN: 978-1-62708-318-8
... on the main landing gear and flap tracks; Ti-15V-3Cr-3Al-3Sn, which is cold formable, for sheet applications as well as ducts, fittings, and nut clips; and the Beta-21S alloys (Ti-15Mo-2.7Nb-3Al-0.2Si) in hot locations. Total titanium use on the B777 is approximately 15% of the gross empty weight. Recently...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.htgpge.t67320033
EISBN: 978-1-62708-347-8
...Chemical compositions of frequently used carburizing grade gear steels, % Table 5.1(a) Chemical compositions of frequently used carburizing grade gear steels, % Material (AISI) C Mn P S Si Ni Cr Mo V W Co 3310 0.08–0.13 0.45–0.60 0.025 max. 0.025 max. 0.20–0.35 3.25...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1985
DOI: 10.31399/asm.tb.sagf.t63420043
EISBN: 978-1-62708-452-9
... Abstract This chapter discusses field, visual, physical, and metallurgical examinations of gear failures. Physical examinations reviewed include nondestructive testing, including magnetic-particle inspection, tooth characteristic studies, surface hardness testing, ultrasonic testing, nital...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2005
DOI: 10.31399/asm.tb.gmpm.t51250163
EISBN: 978-1-62708-345-4
...Chemical compositions of frequently used carburizing grade gear steels Table 1 Chemical compositions of frequently used carburizing grade gear steels Material Composition, wt% C Mn P S Si Ni Cr Mo V W Co AISI grades 3310 0.08–0.13 0.45–0.60 0.025 max. 0.025 max...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870001
EISBN: 978-1-62708-344-7
... fatigue fracture Table 1.3 A survey of serious aircraft accidents involving fatigue fracture Aircraft category Number of accidents Number of aircraft destroyed Number of fatalities Fixed wing Landing gear 542 9 21 Engine or transmission 408 144 536 Propeller 232 52...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2000
DOI: 10.31399/asm.tb.ttg2.t61120005
EISBN: 978-1-62708-269-3
... titanium landing gear beam for Boeing 757 aircraft Titanium has the ability to passivate and thereby exhibit a high degree of immunity against attack by most mineral acids and chlorides. Pure titanium is nontoxic; commercially pure titanium and some titanium alloys generally are biologically...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.tb.atia.t59340245
EISBN: 978-1-62708-427-7
... found in other industries. Most are component parts of hydraulic and power-generation systems; pumps as well as gear, brake, and air duct housings are typical. Some structural parts, usually sand-cast high strength 2 xx alloys, are used as described in Chapter 5, “Aluminum Shape Casting” in this book...