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Thermal fatigue fracture

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Published: 01 December 2003
Fig. 3 Thermal fatigue failure and conventional fatigue crack propagation fracture during reversed load cycling of acetal. Source: Ref 10 More
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
... tube fatigue, including mechanical or vibrational fatigue, corrosion fatigue, thermal fatigue, and creep-fatigue interaction. It discusses the causes, characteristics, and impacts of each type and provides several case studies. boiler tubes corrosion fatigue creep-fatigue interaction fatigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610415
EISBN: 978-1-62708-303-4
... at temperatures greater than approximately 0.3 to 0.5 of the absolute melting point. In creep, thermal activation enables plastic deformation at stresses below those needed to deform the lattice without thermal activation. When a metal is placed under a constant load, it stretches elastically but also gradually...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630237
EISBN: 978-1-62708-270-9
... or its absence and the patterns on the fracture surface. Thermal Fatigue Fatigue may be caused either by cyclic mechanical stressing or by cyclic thermal stressing. Thermal-fatigue cracks are the result of repeated heating and cooling cycles, producing alternate expansion and contraction. When...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060385
EISBN: 978-1-62708-261-7
...-Induced Failures High temperature and stress are common operating conditions for various parts and equipment in a number of industries. The principal types of elevated-temperature mechanical failure are creep and stress rupture, stress relaxation, low-cycle or high-cycle fatigue, thermal fatigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610001
EISBN: 978-1-62708-303-4
... are often performed to predict when the next internal or external inspection should be performed. Typical life-limiting mechanisms include stress-corrosion cracking, fatigue, and thermal fatigue. Welded structures that could initiate a crack are often susceptible to these mechanisms. The leak-before-break...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780249
EISBN: 978-1-62708-281-5
... frequency is also found to cause fatigue fracture by conventional crack propagation at high stress amplitude. The interrelation of the two mechanisms, stress amplitude and frequency, for polyoxymethylene (acetal) is shown in Fig. 3 ( Ref 10 ). Fig. 3 Thermal fatigue failure and conventional fatigue...
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
... Abstract Fatigue fractures are generally considered the most serious type of fracture in machinery parts simply because fatigue fractures can and do occur in normal service, without excessive overloads, and under normal operating conditions. This chapter first discusses the three stages...
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
.... It describes the most effective methods of improving fatigue life. The chapter also explains the effect of geometrical stress concentrations on fatigue. In addition, it explores the environmental effects of corrosion fatigue, low-temperature fatigue, high-temperature fatigue, and thermal fatigue. Finally...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870325
EISBN: 978-1-62708-344-7
... P Property S Strength s Filament spacing T Temperature t Thickness x,y,z Structural Reference Axes 1,2,3 Ply material axes α Thermal expansion coefficient δ Interfiber, interply spacing E ,ε Fracture strain, strain Θ Ply orientation angle λ...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630035
EISBN: 978-1-62708-270-9
... in the beam. Fig. 1 Spontaneous residual stress fracture in a 40-ft-long I-beam under no external load. Source: Ref 1 Residual stresses are defined as those stresses that are internal or locked into a part or assembly, even though the part or assembly is free from external forces or thermal...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040295
EISBN: 978-1-62708-300-3
... to be manufactured. The second most common cause of die failure is fatigue fracture. Fatigue occurs as the result of the continual stress cycles that the dies are subjected to. The stress cycles are attributed to both mechanical and thermal loading and unloading of the dies. Fatigue is accelerated in the vicinity...
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
.... Schematic diagrams showing waveforms of temperature, strain, and stress in thermal and isothermal fatigue tests. Fig. 4.40. Comparative resistances of nickel- and cobalt-base alloys to thermal-stress fatigue ( Ref 144 ). Fig. 4.41. Typical examples of the four types of thermal-fatigue...
Image
Published: 01 December 2018
Fig. 6.139 (a) SEM image of fracture surface indicating fatigue striations with oxidized nature of rupture surface, 1000×. (b) Microstructure of a tube with ferrite and bainite as the phases with typical thermal faigue crack having blunt tip, 100× More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490265
EISBN: 978-1-62708-340-9
... Poor toughness and transient thermal stresses Retire; grind, overbore, or bottle bore cracked areas Improve toughness by control of cleanness, H 2 and temper embrittlement Transverse cracks High-cycle fatigue with or without corrosion assistance Retire; weld repair Need to develop materials...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.t52430147
EISBN: 978-1-62708-253-2
...-side erosion: Soot blower erosion Fly ash erosion Coal particle erosion Falling slag erosion Erosion due to steam cutting Fatigue: Mechanical fatigue Thermal fatigue Corrosion fatigue Creep-fatigue interaction Operation failures: Failures due to operational...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130241
EISBN: 978-1-62708-284-6
...). These problems have been sufficiently dealt with in the technical literature. In the process of searching for methods to increase fatigue resistance, there are some constant elements that have a favorable effect, including enhancing treatments such as thermal, thermochemical, as well as surface work...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610327
EISBN: 978-1-62708-303-4
... components, burner nozzles, heat exchanger heating elements, noniron metallurgy insulating parts, thermal barrier coatings Mechanical Long-term, high-temperature resistance, fatigue, thermal shock, wear resistance Wear parts; sealings; bearings; cutting tools; engine, motor, and gas turbine parts...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870001
EISBN: 978-1-62708-344-7
..., and reinforced concrete) Types of fracture considered in assessing costs Overload Brittle fracture Ductile rupture Fatigue Creep Creep rupture Stress corrosion Fretting fatigue Thermal shock Buckling Costs taken into account Costs incurred because of actual failures...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240265
EISBN: 978-1-62708-251-8
.... , Thermal Fatigue of Metals , Marcel Dekker, Inc. , 1991 , p 83 Selected References Selected References • Ashby M.F. and Jones D.R.H. , Engineering Materials 1—An Introduction to Their Properties and Applications , 2nd ed. , Butterworth Heinemann , 1996 • Dieter G.E...