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low-cycle thermal 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
... high value, 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...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490111
EISBN: 978-1-62708-340-9
..., amplitude, and frequency) and factors such as temperature, material defects, component geometry, and processing history. It provides a detailed overview of the damage mechanisms associated with high-cycle and low-cycle fatigue as well as thermal fatigue, creep-fatigue, and fatigue-crack growth. It also...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060231
EISBN: 978-1-62708-343-0
... engines aerospace structural components commercial aircraft high-cycle fatigue low-cycle thermal fatigue Space Shuttle THE MATERIAL BEHAVIOR and life prediction models discussed in earlier chapters have evolved over the years specifically for assessing structural integrity, durability...
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
... be of the low-cycle or high-cycle type ( Ref 6.1 ). Drastic change in temperature causing thermal shock or a large difference in thermal expansion behavior between two structural members can induce plastic strain, giving rise to low-cycle thermal fatigue. In firetube boilers, the most common cause of thermal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060111
EISBN: 978-1-62708-343-0
... stress along F′G′ , the fatigue life can become very long. The greater the hold-time per cycle, the lower is the number of cycles required to stabilize to the low peak tensile stress. The other extreme of behavior is shown in Fig. 6.10(b) . Here, it is assumed that the stabilized loop becomes PQR...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610415
EISBN: 978-1-62708-303-4
... 20. Jaske C.E. , Thermal-Mechanical, Low-Cycle Fatigue of AISI 1010 Steel , Thermal Fatigue of Materials and Components , STP 612, Spera D.A. and Mowbray D.F. , Ed., ASTM , 1976 , p 170 – 198 10.1520/STP27891S Mechanical Strain and Thermal Strain In-Phase versus...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490265
EISBN: 978-1-62708-340-9
... with or without low-cycle fatigue; poor creep ductility due to faulty heat treatment (class c) coupled with poor center quality facilitating initiation and poor toughness Retire; grind, overbore, or bottle bore; derate machine; steam cool; control start-stops Improve center quality; heat treatment has been...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060173
EISBN: 978-1-62708-343-0
... the high- and low-cyclic life range within the same framework, but only for continuous cycling. Its major problem is that it does not account for patterns other than continuous cycling. For this reason, Coffin introduced variant I. Introducing variant I, redefining frequency as the reciprocal of total...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490415
EISBN: 978-1-62708-340-9
... to resist distortion caused by gas loading and thermal stresses, low-cycle fatigue strength to resist the cyclic thermal strains, and oxidation and sulfidation resistance. Material selection includes alloy strength and material processing as well as requirements of mechanical design and heat transfer...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870325
EISBN: 978-1-62708-344-7
.... Because large hysteresis loops can develop in polymers, the energy dissipated per cycle as heat may be considerably larger than in metals. And, also because of polymer’s low thermal conductivity, temperatures tend to become higher in localized regions, especially at cracks developed by fatigue. Even small...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320207
EISBN: 978-1-62708-332-4
... the advantages of compacted graphite iron over gray iron and ductile iron. It presents examples of low- and high-frequency thermal cycling, both of which affect the thermal stresses that castings are exposed to during temperature fluctations. Information on optimum carbon and silicon ranges as well as mechanical...
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 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870267
EISBN: 978-1-62708-344-7
... of this chapter. The fail-safe concept has been adopted in a number of applications. Distinction between High-Cycle and Low-Cycle Fatigue In dealing with remedial measures it is important to distinguish between high-and low-cycle fatigue. In many respects the distinction is arbitrary; some authors prefer...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060223
EISBN: 978-1-62708-343-0
... fatigue cracking resistance of the matrix material. The cyclic strain-fatigue resistance of MMCs has been proposed to be controlled to a large extent by the strain-cycling fatigue resistance of the matrix material, particularly in the low-cycle regime ( Ref 9.2 , 9.3 ). Results of a simple example...
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
... the origin of a low-cycle fatigue-loaded test article Fig. 3 (a) Example of faceted stage 1 fatigue initiation in a cast nickel-base superalloy turbine blade. Arrows denote crack propagation direction. (b) Overall blade fracture and continuation of flatter stage 2 crack propagation emanating from...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.9781627083447
EISBN: 978-1-62708-344-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870375
EISBN: 978-1-62708-344-7
... cycles to failure. With the exception of beryllium, which possesses a number of unusual features, the hcp metals are often low in strength, low in elastic modulus, and of medium to high ductility. Titanium is an exceptional hcp metal. It stands alone in having a relatively high elastic modulus, high...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610001
EISBN: 978-1-62708-303-4
.... As more cycles accumulate, the crack grows until finally the remaining uncracked portion can no longer carry the load, and the component fractures. The fatigue lives of typical steel and aluminum alloys are shown in Fig. 1(b) . If the stress is low enough for this steel alloy, it can be theoretically...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060385
EISBN: 978-1-62708-261-7
... mechanical failure are creep and stress rupture, stress relaxation, low-cycle or high-cycle fatigue, thermal fatigue, tension overload, or a combination of these, as modified by environment. Surface scale, a product of oxidation, can also contribute to material failure at elevated temperartures. Wear...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870045
EISBN: 978-1-62708-344-7
.... It also discusses high-cycle, low-cycle, and ultra-high cycle fatigue and presents several models that are useful for fatigue life predictions. fatigue design fatigue life analysis high-cycle fatigue S-N curve Introduction Traditional <italic>S-N</italic> Curve In attempting...