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fatigue crack propagation

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540379
EISBN: 978-1-62708-309-6
... Abstract This appendix presents an analytical model that estimates damage rates for both crack initiation and propagation mechanisms. The model provides a nonarbitrary definition of fatigue crack initiation length, which serves as an analytical link between initiation and propagation analyses...
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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780249
EISBN: 978-1-62708-281-5
... Abstract This article is a detailed account of the mechanisms of fatigue failure of polymers, namely thermal fatigue failure and mechanical fatigue failure. The mechanical fatigue failure is discussed in terms of fatigue crack initiation and fatigue crack propagation. thermal fatigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780238
EISBN: 978-1-62708-281-5
... Abstract This article reviews fatigue test methodologies, provides an overview of general fatigue behavior (crack initiation and propagation) in engineering plastics, and discusses some of the factors affecting the fatigue performance of polymers. In addition, it provides information...
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
... to crack propagation and how stress concentrations affect fatigue life. It also discusses fatigue life improvement methods and design approaches. fatigue crack growth rates fatigue crack initiation fatigue failures fatigue-life prediction high-cycle fatigue low-cycle fatigue FATIGUE...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540383
EISBN: 978-1-62708-309-6
... crack propagation life predictions ( Ref A4.1 ), Fuchs and Stephens ( Ref A4.2 ) have pointed out that this method is not suitable for general fatigue analysis. The RACETRAK method developed by Fuchs et al. ( Ref A4.3 ) is considered most efficient and accurate for fatigue life predictions...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610209
EISBN: 978-1-62708-303-4
... and Fracture , Vol 19 , ASM Handbook , ASM International , 1996 10.31399/asm.hb.v19.a0002395 10. Wilson A.D. , Fatigue Crack Propagation in Steels: The Role of Inclusions , Fracture: Interaction of Microstructure, Mechanisms and Mechanics , TMS-AIME , 1984 , p 235 – 254 11. Bucci...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610327
EISBN: 978-1-62708-303-4
... but are very rare. Stress hysteresis is nonexistent due to lack of plasticity. The term cyclic fatigue in ceramics basically refers to fatigue crack propagation da/dn . The general method of fatigue crack growth testing of ceramics can be very similar to that given in ASTM Standard E 647 for measuring...
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
... on fatigue fracture surfaces. During stage 2, the primary crack propagation stage of a fatigue fracture, the tip of the crack is an extremely sharp notch, or stress concentration. Actually, it can be considered to be infinitely sharp, for it basically has zero radius at the tip. However, each time...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540121
EISBN: 978-1-62708-309-6
... their use on different metals and alloys. The chapter also discusses design-based approaches for preventing fatigue failures. crack initiation crack propagation fatigue analysis fatigue fracture appearance fatigue life fatigue strength THE DEFINITION OF “FATIGUE” according to ASTM Standard E...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.caaa.t67870099
EISBN: 978-1-62708-299-0
... that influence its formation. It covers alloy selection and mitigation techniques and includes examples of SCC in aircraft components. The chapter also addresses corrosion fatigue, explaining how different environments and operating conditions affect crack propagation, fatigue strength, and fatigue life...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610001
EISBN: 978-1-62708-303-4
..., extensive progress on understanding the phases of fatigue has been made in the last 100 years or so. It now is generally agreed that four distinct phases of fatigue may occur: Crack nucleation Structurally dependent crack propagation (often called the short crack or small crack phase) Crack...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630189
EISBN: 978-1-62708-270-9
... treatment of the particular part. At any rate, fatigue can originate deep within the part as a result of contact stress fatigue. The fatigue cracks propagate parallel and perpendicular to the surface. These cracks tend to be very long, as shown on the hypoid rear axle pinions in Fig. 10(b) and (c...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610377
EISBN: 978-1-62708-303-4
.... The damage may appear as only a small indentation on the surface but can propagate through the laminates, forming a complex network of delaminations and matrix cracks, as depicted in Fig. 13 . Depending on the size of the delamination, it can reduce the static and fatigue strength and the compression...
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
... micrograph showing blunt crack tips. Propagation of some of these cracks through the thickness of the tube gives rise to final fracture. Fig. 6.136 (a) SEM image with fatigue striations on the fracture surface of a stainless steel tube, 1000×. (b) Microstructure indicating transgranular cracks...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030126
EISBN: 978-1-62708-282-2
... can be used to prevent this phenomenon. Static loading usually is considered to be responsible for SCC, while environmentally induced crack propagation due to cyclic loading is defined as corrosion fatigue (see the section “Corrosion Fatigue” in the article “Forms of Mechanically Assisted...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090367
EISBN: 978-1-62708-266-2
... Abstract This chapter addresses the challenge of selecting an appropriate stress-corrosion cracking (SCC) test to evaluate the serviceability of a material for a given application. It begins by establishing a generic model in which SCC is depicted in two stages, initiation and propagation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270154
EISBN: 978-1-62708-301-0
... of the blade. The crack then propagated through the outer skin toward the leading edge of the blade. Once the fatigue crack reached critical length, the sheet metal fractured catastrophically, tearing away from the blade. fatigue crack main rotor blades SEM fractography The main rotor...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270067
EISBN: 978-1-62708-301-0
... ). At higher magnifications, striations were seen confirming the fatigue crack propagation ( Fig. CH2.4b ). Fig. CH2.3 SEM fractograph showing intergranular fracture at the leading edge of the LPTR blade Fig. CH2.4 SEM fractographs showing (a) beach marks and (b) striations in the fatigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090001
EISBN: 978-1-62708-266-2
... considered to be responsible for SCC, while environmentally induced crack propagation due to cyclic loading is defined as corrosion fatigue. The boundary between these two classes of phenomena is vague, and corrosion fatigue is often considered to be a subset of SCC. However, because the environments...