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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001670
EISBN: 978-1-62708-217-4
... Abstract Failure occurred in two TOW flight missile cases in unrelated launchings. After an extensive investigation, it was concluded that stress corrosion was the most likely cause of failure. Subsequent to this conclusion, inner wall softening was observed in an unfired TOW flight missile...
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Published: 01 June 2019
Fig. 1 TOW flight missile case. More
Image
Published: 01 June 2019
Fig. 9 Temperature/distance profile and resulting microstructure for a hot-gas burst proof tested TOW flight missile case. More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001907
EISBN: 978-1-62708-217-4
... Abstract Aircraft missile launcher attachment bolts fabricated from cadmium-coated Hy-tuf steel were found broken. Subsequent analysis of the broken bolts indicated three causes of failure. First, the bolts had been carburized, which was not in conformance with the heat treating requirements...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001268
EISBN: 978-1-62708-215-0
... Abstract A missile detached from a Navy fighter jet during a routine landing on an aircraft carrier deck because of a faulty missile launcher detent spring. Visual inspection of Inconel 718 detent spring assembly revealed that four of the nine spring leafs comprising the assembly were...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001547
EISBN: 978-1-62708-225-9
... UNS S45500 Fatigue fracture Stress-corrosion cracking Mechanical springs go into a variety of aerospace systems where both efficiency and reliability are required. Typical applications range from the control of switching characteristics of miniature switches to the deployment of missile fairing...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c0091669
EISBN: 978-1-62708-227-3
... Abstract During a routine inspection, cracks were discovered in several aluminum alloy (similar to either 2014 or 2017) coupling nuts on the fuel lines of a missile. The fuel lines had been exposed to a marine atmosphere for six months while the missile stood on an outdoor test stand near...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001347
EISBN: 978-1-62708-215-0
..., in the case of very long cylindrical pipelines, the fracture runs axially and initiates at a defect (the fracture may run hundreds of feet). In the case of a pipeline with circumferential stiffening rings or endcaps, the axial fracture transitions to a circumferential tear at the circumferential stiffening...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001717
EISBN: 978-1-62708-217-4
... performing level and running landings. ARL had previously examined a similar part, in which the failure occurred at the same location and was attributed to SCC and/or CF. That particular failure occurred in 1992. In addition, ARL has worked with the Aviation and Missile Command (AMCOM) in the past...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001671
EISBN: 978-1-62708-234-1
... features such as voids, adiabatic shear, and structural surface alterations also indicate the explosion intensity and further allow a comparison of the tube structure near and away from the explosion zone. These, and other metallurgical characteristics, are illustrated and discussed for cases of accidental...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.marine.c9001140
EISBN: 978-1-62708-227-3
.... Conclusions Failure of the cylinders analyzed is due to improper material selection and deficient design procedure. A safer product will result if LBB criterion is employed when designing pressurized aluminum cylinders. References References 1. Irwin G.R. , “Materials for Missiles...
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
... analysis, metallographic analysis, and simulated-service tests. It provides case studies for the analysis of SCC service failures and their occurrence in steels, stainless steels, and commercial alloys of aluminum, copper, magnesium, and titanium. aluminum alloys austenitic stainless steel carbon...
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
... commonly associated with the development of SCC, although not all, and numerous case studies. engineering alloys metallic components SCC mitigation stress-corrosion cracking CORROSION is the deterioration of a material due to its environment. Although corrosion is often thought...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003510
EISBN: 978-1-62708-180-1
... a substantial stress component, due to volumetric increases from martensitic phase transformation. This causes the core to be in compression and the surface to be in tension simultaneously. Example 2 ( Fig. 11b ) illustrates the case that begins after the thermal stresses change sign. The transformation...
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
... UNS G43400 Hydrogen damage and embrittlement Stress-corrosion cracking Mixed-mode fracture Quenched and tempered steels heat treated to ultimate tensile strengths above 260,000 psi have been used in a number of applications in the aircraft and missile field. The success of these ultrahigh...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001583
EISBN: 978-1-62708-217-4
... at the required aging temperature and follow-up mechanical testing. Army aviation Flight safety critical component Metallurgical investigation PH 13-8Mo UNS S13800 Heat treating-related failures Metalworking-related failures Background The U.S. Army Aviation and Missile Command (AMCOM...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006925
EISBN: 978-1-62708-395-9
..., there is another type of isomerism possible when mer units are bonded. If a polymer model is constructed in three dimensions, taking into account tetrahedral bonding, it is found that in some cases two or more different chain configurations can be produced that are consistent with the structural model but cannot...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001600
EISBN: 978-1-62708-217-4
... a surface roughness of 125 maximum all over. Conversation with representatives of the U.S. Army Aviation and Missile Command indicated that this requirement applied to the part before it was shot peened. Since all parts were received by ARL already shot peened, it was impossible to verify conformance...