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infinite-life criterion

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Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002350
EISBN: 978-1-62708-193-1
... applications. This article presents three general approaches to fatigue design, with a discussion on their respective attributes. These include infinite-life criterion, finite-life criterion, and damage tolerant criterion. The article describes the individual property requirements of these approaches. It also...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... fluctuations. This article begins with an overview of fatigue properties and design life. This is followed by a description of the two approaches to fatigue, namely infinite-life criterion and finite-life criterion, along with information on damage tolerance criterion. The article then discusses the...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
...-life criterion gas porosity heat treatment inclusions infinite-life criterion internal bursts macropitting micropitting reversed bending rolling-contact fatigue rotational bending strengthening stress distribution subcase fatigue thermal fatigue torsional loading FATIGUE damage...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003313
EISBN: 978-1-62708-176-4
... long-life (hence, infinite-life) regime. The stress-life approach seems best applied to components that look like the test samples and are approximately the same size (this satisfies the similitude associated with the use of total separation as a failure criterion). Much of the technology in...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002396
EISBN: 978-1-62708-193-1
... traditional approach to fatigue design with ferrous alloys, based on endurance limits and infinite life criterion, has been supplanted by approaches based on finite-life behavior that emphasize the cyclic deformation aspects of the fatigue process ( Ref 4 , 5 ). Central to these approaches for predicting...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003386
EISBN: 978-1-62708-195-5
... goal is to have an inspection interval equal to the desired life of the aircraft. However, if this is not achievable due to an increase in the severity of usage or analytical errors, the aircraft can be operated safely for an extended period of time with the imposition of periodic inspections. The...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003225
EISBN: 978-1-62708-199-3
... geometry and structural configuration. This general relationship makes it possible to translate laboratory results into practical design information without the need for extensive service experience or correlations. Safe-life design based on the infinite-life criterion represents the classical...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005774
EISBN: 978-1-62708-165-8
... martensitic surface layer, making it tougher and preventing possible cracking. On the other hand, for parts made of low- or medium-plain carbon steels having a low hardenability, or for parts made of carburized grades of steel, the interruption criterion is often calculated to provide the hardened shell or...
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006549
EISBN: 978-1-62708-210-5
... Abstract This article describes the effects of cyclic fatigue properties on aluminum alloys. It provides a discussion on strain-control fatigue and the effects of two microstructural features on the strain life of aluminum alloys: shearable precipitates and precipitate-free zones. The article...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0009219
EISBN: 978-1-62708-176-4
... well as lower confidence and/or tolerance limit values, for the fatigue strength of a material. The following procedures can be applied at almost any fatigue life and for any specific stress or strain ratio. However, these approaches typically are used to characterize the so-called infinite life...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002470
EISBN: 978-1-62708-194-8
... the evolution of fatigue and fracture in design, from infinite-life design to modern damage-tolerant design philosophies. The use of fracture toughness in design is extensively covered in numerous articles, textbooks, and handbooks related to aircraft design and damage tolerance ( Ref 65...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006767
EISBN: 978-1-62708-295-2
... calculate maximum load capability (e.g., multiaxial yield criteria). One failure mode theory is the Rankine (or maximum normal stress) criterion, where the maximum principal stress is used. The other is the Tresca theory based on the maximum shear stress. The Rankine criterion holds that inelastic...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002469
EISBN: 978-1-62708-194-8
... increase. For many alloys, a fatigue (endurance) limit exists beyond 10 6 cycles. The endurance or fatigue limit represents a stress level below which fatigue life appears to be infinite upon extrapolation. However, fatigue limits from controlled laboratory tests (often limited from 10 6 to 10 8...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002366
EISBN: 978-1-62708-193-1
... Loading , Proc. Symp. on Methods for Predicting Material Life in Fatigue , Ostergren W.J. and Whitehead J.R. , Ed., ASME , 1979 , p 247 – 264 22. Ellyin F. , A Criterion for Fatigue under Multiaxial States of Stress , Mechanics Research Communications , Vol 1 , 1974 , p...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002394
EISBN: 978-1-62708-193-1
... deficiency in the criterion. Additionally, the ability to inspect these aircraft was impacted by the design of the aircraft itself. Because inspectability was not required as a part of the safe life approach, many details were found to be outside the inspection capability of the 1960s. Relatively small...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003530
EISBN: 978-1-62708-180-1
... stress) criterion, where the maximum principal stress is used. The other is the Tresca theory based on the maximum shear stress. The Rankine criterion holds that inelastic deformation at a point begins when the maximum normal stress reaches the yield strength of the material. Tresca's theory states that...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002476
EISBN: 978-1-62708-194-8
... strength. It discusses life prediction reliability models used for predicting the life of a component with complex geometry and loading. The article outlines reliability algorithms and presents several applications to illustrate the utilization of these reliability algorithms in structural applications...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006344
EISBN: 978-1-62708-179-5
... plays a role in engineering, and each property is used in the context of an underlying fatigue design philosophy, as follows: Design philosophy Design methodology Principal testing data description Safe life, infinite life Stress-life (high-cycle) fatigue S - N Safe life, finite life...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006257
EISBN: 978-1-62708-169-6
... Abstract Homogenization heat treatment can be useful for improving the performance and life of an alloy while in service or for improving the processability during fabrication and hot working. This article describes the identification of incipient melt point, slowest-diffusing elements, and...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002381
EISBN: 978-1-62708-193-1
... which the strength would drop below an acceptable limit. In order to determine which size of crack is admissible, one must be able to calculate how the structural strength is affected by cracks (as a function of their size), and in order to determine the safe operational life, one must be able to...