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single-component systems

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c0009190
EISBN: 978-1-62708-225-9
... Abstract In an industrial application, 24 speed-increaser gearboxes were used to transmit 258 kW (346 hp) and increase speed from 55 to 375 rev/min. The gears were parallel shaft, single helical, carburized, and ground. The splash lubrication system used a mineral oil without antiscuff...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003503
EISBN: 978-1-62708-180-1
... and maintainability engineers, logistic support personnel, users, and others. It identifies potential single-point failure modes of system components and keeps critical items visible throughout the design process. It is useful for identifying the types of tests and testing environments needed to certify whether...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006936
EISBN: 978-1-62708-395-9
... materials. The inspection of these components is substantially different from that of later fiber-reinforced material systems. It was the rapid growth of the composites industry, in both material types and applications, that spawned the need for effective nondestructive evaluation (NDE) methods...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001828
EISBN: 978-1-62708-241-9
... the tests under controlled conditions. This paper deals with the failure of a bearing journal of a 6.7 mW HT pump under complex operating conditions that included a period of operation under two-phase flow conditions. A brief design description of the pump, its components, and the system in which...
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 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 fitting...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006770
EISBN: 978-1-62708-295-2
... systems for quantification. However, these systems are much more expensive. As a result, their use is much less prevalent, and they are more typically found in research institutions. A schematic of a typical WDS is shown in Fig. 4 . X-rays coming from the sample enter the detector and strike a single...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003521
EISBN: 978-1-62708-180-1
... correctly, the consequences of fixing only the primary mechanism need to be examined to determine if future failures could occur from the secondary mechanism(s). This leads to a central theme of this Volume: Understanding the way in which the component functions within the overall system is critical...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006756
EISBN: 978-1-62708-295-2
... remaining. Components susceptible to progressive damage modes can often be identified and replaced or repaired prior to failure through preventative maintenance programs. For example, critical steam piping systems are now inspected at regular intervals for creep damage in the heat-affected zones...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003518
EISBN: 978-1-62708-180-1
... that are used to manufacture it. Allows a structured approach to figuring out the consequences of failures of single features on a component or single steps in a processing sequence Kepner Trego Decision analysis method for problem solving in complex systems and prioritizing Fault tree analyis...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.mech.c9001733
EISBN: 978-1-62708-225-9
... alternating stress, and buckling (compressive) cyclic loading. The mode of failure was found to be reversed bending fatigue caused by drive cables moving over guide pulleys of small radii. Modifications of the machinery and drive cable system were suggested. Bending fatigue Drive cables Rubber...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006754
EISBN: 978-1-62708-295-2
... approach to figuring out the consequences of failures of single features on a component or single steps in a processing sequence Kepner Tregoe Decision analysis method for problem solving in complex systems and prioritizing Fault-tree analysis An analysis method that provides a systematic...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001459
EISBN: 978-1-62708-234-1
... essential characteristics as those that develop under bending, and they do not therefore call for special comment. Combined Stresses The presence of stress systems acting in combination can sometimes he deduced from a study of a fatigue fracture. For instance, if a component is nominally subjected...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.med.c0048423
EISBN: 978-1-62708-226-6
... propagated through a larger gas pore by a ruptured gas pore. The stresses created through the fatigue process activated glide systems which served the formation of secondary cracks along glide planes. Crack propagation Porosity Slip planes Surgical implants ASTM F75 Fatigue fracture In a 65...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006918
EISBN: 978-1-62708-395-9
... in the second regime, m , range from 3 to 50, depending on the polymer system. The Paris relationship is a useful tool for fatigue life prediction ( Ref 11 ). It is implied in this defect-tolerant approach that all structural components are intrinsically flawed with an initial crack size, a i...
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
... investigations and inspections and emphasizes cases where metallurgical or materials contributions were causal to an accident event. The article highlights how the failure of a component or system can affect the associated systems and the overall aircraft. The case studies in this article provide examples...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006781
EISBN: 978-1-62708-295-2
... (TET) of a commercial aircraft turbine during one flight. Adapted from Ref 1 The profile represented in Fig. 1 makes clear that turbine component temperatures vary as a function of time within a single flight. The data also suggest that mechanical demands placed on turbine components vary...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006800
EISBN: 978-1-62708-329-4
.... The main focus is on the design of a part, as opposed to the design of a system or assembly. Systems or assemblies may have many components that involve parameters beyond the typical dimensions, tolerances, and properties of a distinct part. For example, when a system involves human interaction, the design...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001754
EISBN: 978-1-62708-241-9
... with a single, unidirectional load lateral to the bearing and beveled gear rotational axis. Although spalling was found on the bearing balls, it was deemed secondary, the result of the overload event. No evidence of fatigue or progressive failure was found on the other bearing or neighboring components...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0006424
EISBN: 978-1-62708-217-4
... Abstract An external tank pressure/vent valve regulates the external tank fuel feed system, which transfers fuel under pressure to the internal tanks of the aircraft. A dual-position valve was found to be sticking at the intermediate positions. Also, service air check valves located...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003514
EISBN: 978-1-62708-180-1
... sampling probabilistic analysis probability of failure response surface method risk analysis system reliability target reliability time-variant reliability APPLICATION of probabilistic analysis methods for life assessment of structural components is becoming more prevalent because...