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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001560
EISBN: 978-1-62708-217-4
...Abstract Abstract Military aircraft use a cartridge ignition system for emergency engine starts. Analysis of premature failures of steel (AISI 4340) breech chambers in which the solid propellant cartridges were burned identified corrosion as one problem with an indication that stress-corrosion...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001145
EISBN: 978-1-62708-217-4
...-5, University of Oklahoma , USAF Contract No. F34601-83-C-3448, ( 1985 ). 3. Kennelley K.J. , Daniels R. D. , “Stress Corrosion Cracking of 4340 Steel in Aircraft Ignition Starter Residues” , Int. Conf. on Fatigue, Corrosion Cracking, Fracture Mechanics, and Failure Analysis...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0049796
EISBN: 978-1-62708-235-8
...Abstract Abstract Problems with materials compatibility were encountered in pyrotechnically driven devices used in a number of ordnance applications requiring rapid mechanical actuation. A fine bridgewire is located in contact with the chemical pyrotechnic, and the charge is ignited...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001408
EISBN: 978-1-62708-220-4
... present to the gas a surface area considerably greater than that of a homogeneous material. Chlorine gas Combustion Compressors Corrosion environments Ignition Lubrication Piston rods Fe-0.35C (Other, general, or unspecified) corrosion It is known that under suitable conditions iron...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001440
EISBN: 978-1-62708-235-8
... be ignited, thus accounting for the explosion that preceded the fire. The flame from the explosion would serve to ignite the stream of escaping gas, and the resultant jet of flame could have impinged on the hand wheel of the regulating valve. When the temperature of the vessel end in the region of the name...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001796
EISBN: 978-1-62708-241-9
... theory is based on a thermoelectric phenomenon. The theory assumes the presence of four phases: ignition, formation, discharge, and ejection (collapse) [ 6 ]. Based on this theory, one of the factors that could explain slight difference in microcrater size between the rollers and outer raceway...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001488
EISBN: 978-1-62708-236-5
... the subsequent investigation that the cylinder used by the operator for re-charging the receiver contained not air but oxygen the spontaneous ignition temperature of many petroleum derivatives is considerably lower than in air and contact of oxygen with organic or easily oxidised material such as oily or greasy...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0091726
EISBN: 978-1-62708-217-4
... in both systems as a result of laboratory tests on corrosion, stress corrosion, and impact ignition with N 2 O 4 . Qualification testing of the SPS pressure vessel for 46 days of exposure under a membrane stress of 690 MPa (100 ksi) was completed without problems in mid-1964. In January 1965, an RCS...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046418
EISBN: 978-1-62708-234-1
... temperature. The high thermal conductivity of the aluminum alloy, the rotation of the chamber, and axial flow of cooling water that was initially at room temperature provided efficient cooling of the chamber. The 3.0-cm (1.1875-in.) outer-diameter shank served as the fuel inlet, and ignition took place...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001005
EISBN: 978-1-62708-215-0
... was determined using optical emission spectroscopy for most of the alloy elements and a Leco carbon/sulfur analyzer for carbon and sulfur content. The latter analysis required the use of drill flakes for ignition and the subsequent analysis of the combustion gases. Table 1 lists the chemical analysis...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001385
EISBN: 978-1-62708-215-0
... off by the homeowner. Molten aluminum at approximately 593 °C (1100 °F) sputtered out of the service panel and ignited combustibles located on the floor below. Improper tightening was also the most probable cause in incident 3 and may have contributed to incident 2 as well. However, water ingress...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001821
EISBN: 978-1-62708-241-9
... out of the tank, providing an approximately 5.6 cm (2.2 in.) diameter opening through which the tank emptied. As the liquid and gaseous propane spread, it was eventually ignited by the pilot light of a hot water heater in a mobile home roughly 120 m (400 ft) away. The fire flashed back, burning off...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001518
EISBN: 978-1-62708-228-0
... compressor. This resulted in the expulsion of an oil/air mixture that ignited on hot engine components. The unit had been in operation for approximately 5 years, and all components were original equipment manufacturer (OEM). The location where the hose failed is shown in Fig. 1 . Fig. 1 The receiver...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001760
EISBN: 978-1-62708-241-9
... coolant inlet and outlet temperatures were constant during the endurance test, and there was no leakage and coolant contamination in oil analysis. 20 h before engine stopping, the ECU sensed a knock, and the engine torque and power decreased because of retarding of the ignition time. After checking...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c9001663
EISBN: 978-1-62708-236-5
... is shown. The nozzle (the outer portion of the unit) contains a small (1.5 mm diam) hole sufficient to create the back pressure described previously yet release the gas generated from the ignition of the powder. The larger hole in the nut releases a greater amount of gas if the nut is not properly...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001848
EISBN: 978-1-62708-241-9
... ( Fig. 5 ). After a forging hit, the lubricant develops the “diesel effect,” expands, and ignites with air. This process causes damage in the form of “blowpipe holes,” and wear emphasizes these holes, which then tends to retain the metal [ 5 ]. Fig. 4 ( a ) Worn surface of the die, ( b ) detail...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001314
EISBN: 978-1-62708-215-0
.... Approximately two coils of tubing were cut out of the system, and new tubing installed. The third failure, later identified as a through-wall rupture in coil 6, occurred as attempts were again made to bring the system on line. During operation, burners were ignited on demand, causing the system to thermally...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001148
EISBN: 978-1-62708-228-0
..., and subsequently, the escaping gas was ignited, apparently by a hot water heater pilot light in a nearby trailer park. The resultant fire burned for over one hour before the line was finally shut off. The effect of the fire was to alter the metallurgical evidence to such a degree as to obscure in part the primary...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006772
EISBN: 978-1-62708-295-2
... combustible materials to a sufficient temperature that ignition of the materials occurred. The investigator would need to be cautious when using such an approach in this situation. A number of questions may arise that could require testing and/or further analysis, including: Was the arcing...
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
...). The most likely source of ignition was static electricity caused when the vent line from the tank car was opened. However, other mechanisms for initiating the combustion process were possible, but less likely. Remedial Action It was recommended that the method of attachment of the nozzle...