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low-cycle fatigue

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240243
EISBN: 978-1-62708-251-8
..., a large enough variation or fluctuation in the applied stress, and a sufficiently large number of cycles of the applied stress. The discussion covers high-cycle fatigue, low-cycle fatigue, and fatigue crack propagation. The chapter then discusses the stages where fatigue crack nucleation and growth occurs...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610147
EISBN: 978-1-62708-303-4
... Abstract This chapter discusses the factors that play a role in fatigue failures and how they affect the service life of metals and structures. It describes the stresses associated with high-cycle and low-cycle fatigue and how they differ from the loading profiles typically used to generate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540379
EISBN: 978-1-62708-309-6
... and appears to have considerable merit in estimating the total fatigue life of notched and cracked structures. damage rate fatigue crack initiation fatigue crack propagation fatigue life nonarbitrary crack size LOW-CYCLE FATIGUE CONCEPTS based on the local stress-strain approach have been...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630117
EISBN: 978-1-62708-270-9
... continued cyclic loading, and that can then lead to fracture of the part or structure. Once initiated, the fatigue fracture can propagate by high stresses and low cycles or by low stresses and high cycles. The final rupture may have characteristics of brittle and/or ductile fracture modes, depending...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540121
EISBN: 978-1-62708-309-6
... Plasticity , STP 378, ASTM , 1965 , p 45 – 87 10.1520/STP43764S 3.3. Smith R.W. , Hirschberg M.H. , and Manson S.S. , “Fatigue Behavior of Materials Under Strain Cycling in Low and Intermediate Life Range,” Report TN D-1574, NASA , April 1963 3.4. Manson S.S...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270102
EISBN: 978-1-62708-301-0
... and subjected to chemical analysis and low-cycle fatigue tests. Based on their findings, investigators concluded that the bolts failed due to fatigue compounded by excessive clearances and poor surface finishes. The chapter provides a number of recommendations addressing these issues and related concerns...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270138
EISBN: 978-1-62708-301-0
... on their observations and the results of SEM imaging described in the chapter, investigators concluded that the blade failed by low-cycle fatigue, acting on a preexisting crack. fractography high pressure turbine blades low-cycle fatigue SEM fractography visual examination A nimonic alloy...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540383
EISBN: 978-1-62708-309-6
... acknowledged that the range-pair method, which counts the reversals as the basis for fatigue damages, may not be suitable for low-cycle fatigue and/or fatigue crack propagation for the following reasons. The range-pair method always retains a cycle that is equivalent to the largest bite in the spectrum...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610209
EISBN: 978-1-62708-303-4
... = N I + N P . Fatigue tests on titanium alloys have shown that at high stress or strain amplitudes, the ratio N I / N F can be as small as 0.01. Therefore, the resistance to crack propagation determines fatigue life in the low-cycle fatigue regime. With regard to crack propagation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780238
EISBN: 978-1-62708-281-5
... are considered high-cycle fatigue with little plastic strain. Low-cycle fatigue tests are identified by the relatively small number of cycles or reversals to failure and the large degree of plastic strain. An important concern in the testing of polymers is that the attributes of the fatigue test are crucial...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430325
EISBN: 978-1-62708-253-2
... or soot blowers, whereas low-frequency high-amplitude stresses are attributed to boiler cycling. Defective tube-to-tube welds or tube-to-manifold welds that are subjected to vibrations on account of inadequate supports are areas where failure due to mechanical fatigue is most common. Thermal fatigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780249
EISBN: 978-1-62708-281-5
... in high mechanical hysteresis. Because of their low thermal conductivity, a large portion of the mechanical work done is converted into heat, which complicates the analysis of fatigue data, particularly at high loading frequencies. The traditional approach to fatigue lifetime prediction due to Wohler...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610001
EISBN: 978-1-62708-303-4
...) . If the stress is low enough for this steel alloy, it can be theoretically cycled forever; that is, it has a definite endurance limit. On the other hand, aluminum alloys do not have an endurance limit; if enough cycles are applied at even very low loads, they will eventually fail in fatigue. Fig. 1...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610377
EISBN: 978-1-62708-303-4
... laminate into one or more sublaminates, the section at the delamination is more susceptible to buckling during compression loading. Another key issue is whether or not the delamination will grow and become bigger under fatigue loading, with compression loading again being the prime concern. Low...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610327
EISBN: 978-1-62708-303-4
... High-temperature and thermal shock resistance, thermal conductivity (high or low, respectively) High-temperature components, burner nozzles, heat exchanger heating elements, noniron metallurgy insulating parts, thermal barrier coatings Mechanical Long-term, high-temperature resistance, fatigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630189
EISBN: 978-1-62708-270-9
... a crack through the case to the surface. This and the gear in (b) were made of low-carbon alloy steel, case carburized to a surface hardness near 60 HRC. (d) Cross section through a gear tooth showing subcase-origin fatigue cracks similar to those sketched in (a). The original fatigue cracks are those...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130241
EISBN: 978-1-62708-284-6
... of tempering temperature on the changes in hardness and case depth are smaller than for the 4140 steel. It was found that lowering the tempering temperature raises the fatigue resistance of the core-case system. Shorter nitriding time, following a low tempering temperature, does not affect the volume fatigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410151
EISBN: 978-1-62708-280-8
..., marine propellers pistons Crashworthiness (a) , high yield and fatigue strength applications Burst pressure resistance (master cylinder and ABS body), burst pressure resistance and bridge fatigue low cycle applications (calipers) Oil leak–proof, thin walled and cored applications Material...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.aceg.t68410091
EISBN: 978-1-62708-280-8
...; the typical tensile properties of die cast alloys; and the designations of different heat treatments and their description. The tables also list the temperatures and times of typical heat treatment cycles for different permanent mold cast alloys; typical components in sand, gravity, and low-pressure permanent...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1999
DOI: 10.31399/asm.tb.cmp.t66770171
EISBN: 978-1-62708-337-9
..., <0.25% Cu. (b) Distortions in crystal lattice in α solid solution The current opinion is that moderate to high quantities of retained austenite are beneficial to the low-cycle fatigue resistance of carburized and hardened parts, and are detrimental to the high-cycle fatigue resistance ( Ref...