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mechanical fracture

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410405
EISBN: 978-1-62708-265-5
... in low-carbon steels. It also discusses the effect of tempering temperature on the mechanical behavior and deformation properties of medium-carbon steels. deformation fracture microstructure tempering CHAPTER 16, “Hardness and Hardenability,” and Chapter 17, “Tempering of Steel...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610101
EISBN: 978-1-62708-303-4
... Abstract Fracture mechanics is the science of predicting the load-carrying capabilities of cracked structures based on a mathematical description of the stress field surrounding the crack. The fundamental ideas stem from the work of Griffith, who demonstrated that the strain energy released...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630257
EISBN: 978-1-62708-270-9
... Abstract Fracture mechanics is a well-developed quantitative approach to the study of failures. This chapter discusses fracture toughness and fracture mechanics, linear-elastic fracture mechanics, and modes of loading. The discussion also covers plane strain and stress and crack growth kinetics...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 1983
DOI: 10.31399/asm.tb.mlt.t62860269
EISBN: 978-1-62708-348-5
... on the fatigue crack growth rates of Ti-5AI-2.5Sn, an h.c.p. alloy. Figure 8.20 The proof test concept. Abstract This chapter reviews the concepts of fracture mechanics and their application to materials evaluation and the design of cryogenic structures. Emphasis is placed on an explanation...
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Published: 01 December 2015
Fig. 20 Mechanical fracturing of the sulfide scale on the metal surface under low total acid number and high-velocity naphthenic acid corrosion conditions. Note cracks in dark iron sulfide film. More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.9781627083096
EISBN: 978-1-62708-309-6
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540281
EISBN: 978-1-62708-309-6
... Abstract Large-scale yielding at the crack tip and time-dependent crack growth mechanisms, such as stress relaxation due to creep, are nonlinear behaviors requiring nonlinear analysis methods. This chapter presents two such methods, one based on elastic-plastic fracture mechanics, the other...
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Published: 01 August 1999
Fig. 19 (a) Effects of artificial aging on the mechanical and fracture properties of alloy 2024. (b) Effects of artificial aging on the corrosion and stress-corrosion properties of alloy 2024 in NaCl solution More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930163
EISBN: 978-1-62708-359-1
... 1980s, a number of fracture mechanics-based assessment procedures have been developed that enable the significance of weld discontinuities to be assessed on a “fitness-for-service” basis. Using this concept, a structure is considered to be fit for service if it can be operated safely throughout its...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540047
EISBN: 978-1-62708-309-6
... they reveal about the load-carrying characteristics of engineering materials. It then discusses the use of failure criteria and the determination of yielding and fracture limits. It goes on to describe the mechanisms and appearances of brittle and ductile fractures and stress rupture, providing detailed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090001
EISBN: 978-1-62708-266-2
...-intensity on crack propagation rates, and describes several mechanical fracture models, including corrosion tunnel, film-induced cleavage, and tarnish rupture models. crack initiation crack propagation stress-corrosion cracking STRESS-CORROSION CRACKING (SCC) is a term used to describe service...
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Published: 01 July 2009
Fig. 2.1 Simple classifications of fracture mechanisms. (a) Low-temperature fracture mechanisms ( T ≤ 0.3 T M in absolute temperature), where plastic flow does not depend strongly on temperature or time. (b) Mechanisms of creep leading to rupture at high-temperature fracture ( T ≥ 0.3 T More
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Published: 01 August 2005
Fig. 2.87 Fracture mechanism map for an 80Ni-20Cr solid solution showing regions of fracture modes and lines of equal rupture life. Source: Ref 2.58 More
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Published: 01 August 2005
Fig. 3.20 Fatigue fracture mechanisms in Incoloy alloy X750 (UNS N07750) as a function of the stress-intensity factor range, Δ K . Test conditions: 24 °C (75 °F), 300 cycles/min, R = 0.05. The plot of fatigue crack growth rate, da/dN , versus Δ K shows that at high Δ K , the fatigue More
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Published: 01 January 2015
Fig. 6.28 Fracture mechanics approach to life. The symbol “ a ” represents crack length, and the critical crack length ( a c ) is calculated from the fracture toughness ( K Ic ) and yield strength (YS). More
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Published: 01 October 2012
Fig. 10.10 Fracture mechanism map for hot-pressed silicon nitride flexure bars. Source: Ref 10.8 More
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Published: 01 July 2000
Fig. 7.98 Three types of cracks analyzed by fracture mechanics methods. (a) Through crack of width 2a. (b) Through edge crack of depth a. (c) Partial surface crack of width 2a More
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Published: 01 January 2017
Fig. 6.16 Data for fracture mechanics specimens of type 304 stainless steel exposed in the high-flux region of the core and in the recirculation line of Nine Mile Point Unit 1 BWR. All specimens were precracked and wedge loaded to an initial stress-intensity factor of approximately 27.5 More
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Published: 01 December 1989
Fig. 3.18. Fracture-mechanism maps for annealed 2¼Cr-1Mo steel ( Ref 108 ). Above: Fracture modes in temperature-stress space; numbers with data points are values of log t r . Below: Same data plotted differently to show change in fracture mode with t r . More
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Published: 01 July 2009
Fig. 1.13 Fracture mechanism map for nickel. Source: Ref 1.24 More