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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001552
EISBN: 978-1-62708-217-4
... engines. Aircraft engine manufacturers and aeronautical standards require magnetic particle inspection to detect grinding cracks after reconditioning. Renitriding after any grinding is needed also, regardless of the amount of undersize as it introduces beneficial residual compressive stresses...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001728
EISBN: 978-1-62708-236-5
...Abstract Abstract The propeller from a small private airplane came off in flight. The head ends of all six attachment bolts remained in the propeller hub when it was found. Two threaded shanks with nuts remained with the engine, while the remaining four shank ends with their nuts were missing...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001753
EISBN: 978-1-62708-241-9
...Abstract Abstract A failure analysis investigation was conducted on a fractured aluminum tailwheel fork which failed moments after the landing of a privately owned, 1955 twin-engine airplane. Nondestructive evaluation via dye-penetrant inspection revealed no discernible surface cracks...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001747
EISBN: 978-1-62708-217-4
...Abstract Abstract This report covers case histories of failures in fixed-wing light airplane and helicopter components. In a 2025-T6 or 2219 aluminum alloy propeller blade that failed near the tip, cracks started on the leading edge at surface damage in the critical area-the zone between 4...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001743
EISBN: 978-1-62708-217-4
... roots. One example of the most common type of cylinder failure is illustrated. Airplane engines Castings Engine cylinders Engine valves Housings Turbocompressors Ferrous engine cylinders (Other, general, or unspecified) fracture Cylinder fatigue can be due to abnormal heating...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001744
EISBN: 978-1-62708-217-4
.... Aircraft components Airplane engines Axles Fittings Repair welding Welding defects Chromium-nickel steel Brittle fracture Joining-related failures Two examples of brittle fracture promoted by small fatigue cracks due to welding deficiencies illustrate weld failures. Other parts involving...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003554
EISBN: 978-1-62708-180-1
... , Service Experience and Reliability Improvement: Nuclear Fossil and Petrochemical Plants , American Society of Mechanical Engineers , 1994 , p 329 6. McIntyre D.R. , English J.J. , and Kobrin G. , “Mercury Attack of Ethylene Plant Alloys,” Paper 106, presented at Corrosion/89...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001299
EISBN: 978-1-62708-215-0
... be used to cheek for cracks during periodic maintenance overhauls. Aerospace engines Airplanes Nonmetallic inclusions 4340 UNS G43400 Fatigue fracture Background A steel piston engine crankshaft in a transport aircraft failed catastrophically during flight. Applications...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001752
EISBN: 978-1-62708-241-9
... crankshafts failed within 15 h to 1,254 h of service after being installed in six-cylinder reciprocating engines of airplanes. After the aircraft engine manufacturer analyzed this problem, the Federal Aviation Agency (FAA) approved the manufacturer’s issue of Mandatory Service Bulletin 00-5 (MSB 00-5) [ 1...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006786
EISBN: 978-1-62708-295-2
... airplane engines Failure of fourth-stage compressor wheels of helicopter jet engines In an investigation of a series of failures of diesel locomotive axles, it was found that the cause was LMIE by the lead-base Babbitt metal in the traction motor suspension bearings ( Ref 17 ). The Babbitt...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001296
EISBN: 978-1-62708-215-0
... a stereoscopic microscope and/or a borescope. Aircraft components Airplanes Bearing steel Control valves Electric discharge machining Engine components Low-cycle fatigue 52000 Fatigue fracture Metalworking-related failures Brittle fracture Background A steel relay valve guide component...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001290
EISBN: 978-1-62708-215-0
... in the cockpit. However, the main structure was undamaged. Despite these multiple emergencies, the pilot continued to fly the aircraft and attempted an emergency landing. In process, the aircraft overshot the runway, severing the engines and damaging the underside of the aircraft. Although an in-flight explosion...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003504
EISBN: 978-1-62708-180-1
..., the initial scheduled maintenance program for the DC-8, published in 1959, established overhaul intervals for 339 items in the aircraft in addition to periodic overhauls for the engines and for the airplane as a whole. However, there was some evidence that this conventional wisdom had flaws. The airlines...
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
... Microanalysis Metallographic Evaluation Microhardness Evaluation Discussion Conclusions References References 1. Cedarquist S.C. : “Improving Aging Airplane Safety,” Mater. Performance , 2000 , 39 , pp. 20 – 5 . 2. Hoffman M.E. and Hoffman P.C. : “Corrosion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001558
EISBN: 978-1-62708-217-4
...Abstract Abstract A liquid hydrogen main fuel control valve for a rocket engine failed by fracture of the Ti-5Al-2.5Sn body during the last of a series of static engine test firings. Fractographic, metallurgical, and stress analyses determined that a combination of fatigue and unexpected...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001506
EISBN: 978-1-62708-217-4
...Abstract Abstract A single-engine aircraft was climbing to 8000 ft when the engine suddenly lost power. The landing gear was torn off during the emergency landing. During the field investigation, the fuel line was found to be separated from the fuel pump outlet due to a failure of the elbow...
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
...Abstract Abstract The truck beam of the left main landing gear (MGL) of a Boeing 707 airplane collapsed on the ground just after the aircraft was unloaded and refueled. The investigation revealed that failure was caused by the propagation of an intergranular crack originating from the bottom...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001020
EISBN: 978-1-62708-214-3
.... It was recommended that the design be modified to avoid dissimilar metal combinations of high corrosion potential. Airplanes Steels Transition joints 7014 UNS A97014 Stress-corrosion cracking Background A twin-turboprop transport aircraft sustained considerable damage when one of its main landing...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006755
EISBN: 978-1-62708-295-2
... have all the correct tools? Do I need supplies? Do I need help? Should I get a professional to do this job?” In business, engineers plan buildings and bridges, highways and trains, cars and airplanes, even production of the smallest widget. Engineers plan the design, material delivery...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001026
EISBN: 978-1-62708-214-3
... for the wing leading edge flap are fastened ( Fig. 1 ). The outboard and inboard supports had fractured, leading to loss of the flap in flight. Despite this, the aircraft was able to land safely. Analysis of the fracture was first performed by the materials engineering laboratory of the aircraft overhaul...