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fracture toughness
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Book Chapter
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540169
EISBN: 978-1-62708-309-6
... Abstract This chapter discusses various types of material fracture toughness and the methods by which they are determined. It begins with a review of the basic principles of linear elastic fracture mechanics, covering the Griffith-Irwin theory of fracture, the concept of strain energy release...
Abstract
This chapter discusses various types of material fracture toughness and the methods by which they are determined. It begins with a review of the basic principles of linear elastic fracture mechanics, covering the Griffith-Irwin theory of fracture, the concept of strain energy release rate, the use of fracture indices and failure criteria, and the ramifications of crack-tip plasticity in ductile and brittle fractures. It goes on to describe the different types of plain-strain and plane-stress fracture toughness, explaining how they are measured and how they are influenced by metallurgical and environmental variables and loading conditions. It also examines the crack growth resistance curves of several aluminum alloys and describes the characteristics of fracture when all or some of the applied load is in the plane of the crack.
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Published: 01 December 2001
Fig. 1 Plane-strain fracture toughness of maraging steels compared with fracture toughness of several ultrahigh strength steels as a function of tensile strength.
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Published: 01 December 1989
Fig. 2.12. Reference fracture-toughness curve for nuclear-reactor pressure-vessel steels as per ASME Boiler and Pressure Vessel Code, Section III, Appendix G ( Ref 45 ).
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in Life Assessment of Steam-Turbine Components
> Damage Mechanisms and Life Assessment of High-Temperature Components
Published: 01 December 1989
Fig. 6.9. Effect of temper embrittlement on fracture toughness of a Cr-Mo-V rotor steel ( Ref 20 ).
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Published: 01 March 2006
Fig. 9.6 Practical fracture toughness specimens. (a) Symmetrical center-cracked plate. Source: Ref 9.13 . (b) Symmetrical edge-cracked plate. Source: Ref 9.13 . (c) Bend specimen. Source: Ref 9.14 .
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in Avoidance, Control, and Repair of Fatigue Damage[1]
> Fatigue and Durability of Structural Materials
Published: 01 March 2006
Fig. 11.2 Decrease in fracture toughness at high hardness, 1.27 cm (½ in.) SAE 1045 steel specimens, V-notched to 0.953 cm (3/8 in.), precracked in fatigue, then heat treated. Source: Ref 11.5
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in Avoidance, Control, and Repair of Fatigue Damage[1]
> Fatigue and Durability of Structural Materials
Published: 01 March 2006
Fig. 11.86 Apparent fracture toughness of 0.056 in. Inconel 718 sheet at 538 °C (1000 °F). Source: Ref 11.100
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Published: 01 December 1999
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in Tribological Properties of Ceramics, Cermets, and Cemented Carbides
> Tribomaterials: Properties and Selection for Friction, Wear, and Erosion Applications
Published: 30 April 2021
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Published: 01 November 2010
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in Properties and Performance of Aluminum Castings
> Aluminum Alloy Castings: Properties, Processes, and Applications
Published: 01 December 2004
Fig. 8.23 Plane-strain fracture toughness, K Ic , versus tensile yield strength for selected aluminum alloy castings. SC, sand cast alloy; PE, premium engineered alloy
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in Properties and Performance of Aluminum Castings
> Aluminum Alloy Castings: Properties, Processes, and Applications
Published: 01 December 2004
Fig. 8.24 Plane-strain fracture toughness, K Ic , versus notch-yield ratio for some cast aluminum alloys compared to the mean values of the relationship for wrought aluminum alloys
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in Properties and Performance of Aluminum Castings
> Aluminum Alloy Castings: Properties, Processes, and Applications
Published: 01 December 2004
Fig. 8.25 Plane-strain fracture toughness, K Ic , versus notch-yield ratio for selected cast aluminum alloys compared to the range of such values for wrought aluminum alloys. SC, sand cast; PM, permanent mold
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Published: 01 December 2004
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Published: 01 September 2005
Fig. 30 Fracture toughness in carburized steels as a function of distance below the surface. The SAE PS55, 9310, and 8620 steels were commercial heats; the SAE PS32 and 4820 steels were laboratory heats. The PS32 and 4820 steels were quenched directly after carburizing at 925 °C (1700 °F
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Published: 01 June 2008
Fig. 26.5 Fracture toughness versus yield strength for high-strength aluminum alloys. Source: Ref 8
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Published: 30 November 2013
Fig. 5 Fracture toughness versus yield strength for some structural steels. TRIP, transformation-induced plasticity.
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Published: 30 November 2013
Fig. 11 Specimen types used in plane-strain fracture-toughness ( K Ic ) testing (ASTMA 399). a , crack length; W , specimen width
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Published: 30 November 2013
Fig. 12 Common fracture-toughness testing setup showing the interaction of the test specimen with the control and data acquisition instruments. A crack-mouth opening displacement gage is mounted in the compact-type (C(T)) specimen. Current systems generally use servohydraulic test systems
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Published: 01 June 2008
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