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Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006927
EISBN: 978-1-62708-395-9
... This article provides background information needed by design engineers to create part designs optimized for plastics and plastic manufacturing processes. It describes the four essential elements of plastic part development, namely, material, process, tooling, and design, and provides general design rules...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001788
EISBN: 978-1-62708-241-9
... in design and process optimization. The dies used in the investigation were made of H13 steels and fractured during the hot extrusion of Al-6063 billet material. They were examined to identify critical fatigue failure locations, determine corresponding stresses and strains, and uncover correlations...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001794
EISBN: 978-1-62708-241-9
... hardness did not have the optimal value for long-term fatigue strength. References References 1. Shigley J.E. , Mischke C.R. , Budynas R.G. : Mechanical Engineering Design , 7th edn. , p. 80 . McGraw-Hill , New York ( 2004 ) 2. Heat Treater’s Guide, Standard Practices...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c0090030
EISBN: 978-1-62708-217-4
... to address the anomalies, with the objective of enhancing rotor life management practices. The ongoing work involves the use of fracture mechanics and software (called DARWIN.) optimized for damage tolerant design and analysis of metallic structural components. Compressors Damage tolerance analysis...
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
... that the failure resulted from several interrelated factors: the lubricant viscosity was too low causing high temperatures; no antiscuff additives were used; a gearbox designed as a speed reducer was used as a speed increaser (the designer selected a long-addendum tooth for the pinion); the gear teeth were...
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
... in design and processing was required. However, with the heightened awareness of efficient design, optimized performance, economic competition, environmental impacts, safety concerns, and legal liability, current methods of materials selection are viewed more and more as a simultaneous and integral part...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003501
EISBN: 978-1-62708-180-1
... and processing was required. However, with the heightened awareness of efficient design, optimized performance, economic competition, environmental impacts, safety concerns, and legal liability, current methods of materials selection are viewed more and more as a simultaneous and integral procedure of the entire...
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
.... There is a threshold stress for initiating SCC. This threshold depends on the alloy, its metallurgical condition, and the environmental conditions of exposure. By optimal design and assembly fits of the component, it is possible to restrict the induced stresses to levels below the material threshold limit. Much...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006815
EISBN: 978-1-62708-329-4
... is optimized), including thrust, revolutions per minute, air flow, fuel flow, key flowpath temperatures, and so on. The design specification also defines: Required off-design performance Cyclic life and creep life for engine components Overspeed capability Bird strike survivability Number...
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
... by equation 3 , i.e. limiting the wall thickness, should be blended with traditional design procedures which are based, solely, on strength of materials considerations and favor increasing wall thickness. This will yield an optimal wall thickness, which in turn will ensure a safer pressure vessel...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001634
EISBN: 978-1-62708-221-1
... the nominal service life of the hose must be taken into account to determine the optimal design life of the hose. Hydraulic hoses are typically regarded as a consumable item and are replaced after a nominal number of hours in service regardless of their condition. Many operators of hydraulic equipment...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001294
EISBN: 978-1-62708-215-0
...× Abstract A precipitation-hardened stainless steel poppet valve assembly used to shut off the flow of hydrazine fuel to an auxiliary power unit was found to leak. SEM and optical micrographs revealed that the final heat treatment designed for the AM-350 bellows material rendered the AM-355 poppet...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c0065827
EISBN: 978-1-62708-221-1
...), hardnesses from 56 to 59 HRC, and retained austenite contents varying from a trace to 8% in failed knives. The alloy design program was established to produce a lower-cost composition (based on the cost to add various alloying elements) with significantly higher toughness, which is easily heat treated...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001805
EISBN: 978-1-62708-241-9
... role in our healthcare system. However, surgical tool failure can have serious consequences. Like any engineered structure, a balance between functionality, strength, geometry, resistance to operating environment, cost, and other variables require tradeoffs and design optimization to allow the greatest...
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
... leakage or other malfunction is set in the standard specifications. Secondly, corrosion and its effects on reducing the nominal service life of the hose must be taken into account to determine the optimal design life of the hose. Hydraulic hoses are typically regarded as a consumable item...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003502
EISBN: 978-1-62708-180-1
... into the requirements. The result is that the concept selected will be over-constrained and therefore not an optimal solution to the problem. A large number of custom-designed vertical lift conveyors were required for use in a series of new automated U.S. mail-sorting facilities. These facilities comprise...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001803
EISBN: 978-1-62708-241-9
... the knowledge regarding clinical implant performance, demonstrates interactions between implants and the body, provides a basis for the development of biocompatible implant materials, encourages design optimization, and assists medical device research. Statistical analysis shows that 5 to 10% of the 6.2...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c0065825
EISBN: 978-1-62708-228-0
... propagation were needed be controlled. It was concluded that improved steel processing procedures, chiefly hot-working temperature and deformation control, were also required to optimize microstructure and properties. Chemical composition Ductile brittle transition Gas pipelines Steel making API 5L...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.conag.c9001635
EISBN: 978-1-62708-221-1
.... Secondly, corrosion and its effects on reducing the nominal service life of the hose must be taken into account to determine the optimal design life of the hose. Hydraulic hoses are typically regarded as a consumable item and are replaced after a nominal number of hours in service regardless...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006838
EISBN: 978-1-62708-329-4
... ( Ref 35 ). Topological optimization is another benefit unique to the metal AM processes. This design approach uses both solid modeling and stress-analysis software to analyze a predictably loaded part. This ensures that most or all fabricated sections of the part carry loads, with the objective...