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plane-strain fracture toughness

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240221
EISBN: 978-1-62708-251-8
... failure transitions to a brittle failure. The discussion then covers the Griffith theory of brittle fracture and the formulation of fracture mechanics. Procedures for determination of the plane-strain fracture toughness are subsequently covered. Finally, the chapter describes the effects of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540411
EISBN: 978-1-62708-309-6
... Abstract This appendix provides tensile property data for titanium alloys and castings and plane-strain fracture toughness data for Ti-6Al-4V castings. alpha-beta titanium alloys beta titanium alloys titanium castings plane-strain fracture toughness tensile properties LIMITED...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540169
EISBN: 978-1-62708-309-6
... 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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410439
EISBN: 978-1-62708-265-5
... microstructure to resist fracture. Many factors in addition to microstructure affect whether a steel will have high or low toughness, and these factors are incorporated into the many tests used to evaluate fracture behavior. Charpy V-notch (CVN) testing evaluates the effect of high strain rate loading and a...
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...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780204
EISBN: 978-1-62708-281-5
... for Plane-Strain Fracture Toughness of Metallic Materials, ” E 399, Annual Book of ASTM Standards , American Society for Testing and Materials 42. Williams J.G. , Fracture Mechanics of Polymers , John Wiley & Sons , 1984 43. “ Standard Test Method for Stress Crazing of Acrylic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780211
EISBN: 978-1-62708-281-5
... International tests for fracture strength. This may occur sometimes due to the amount of specimen available and at other times due to the simplicity of specimen preparation and characterization. Fracture testing using standardized linear fracture mechanics approaches, such as plane-strain fracture toughness...
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
... methods and specimen configurations that have been developed to measure the toughness of various materials. In this chapter, five of the more common methods are covered: impact ductile-to-brittle transition temperature testing, drop-weight testing, plane-strain fracture toughness, J -integral, and crack...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410213
EISBN: 978-1-62708-265-5
... segregation of the interstitial atoms to the elastic strain fields of dislocations. For example, edge dislocations, where the lattice discontinuity is a line extending along the edge of an incomplete plane of atoms, have a tensile strain field below that edge and can accommodate interstitial atoms more...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610209
EISBN: 978-1-62708-303-4
... vs. yield strength. (b) Unit propagation energy vs. yield strength. Source: Ref 11 Fig. 26 Relationships of plane-strain fracture toughness to yield strength for the 2 xxx and 7 xxx series of aluminum alloys. Source: Ref 12 The strength-fracture toughness interaction has been...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610327
EISBN: 978-1-62708-303-4
... internal pores, which are virtually impossible to eliminate or control. Plane-strain fracture toughness ( K Ic ) values for ceramic materials are much lower than for metals, typically below 10  MPa m   ( 9  ksi in. ) , while for metals they can exceed 110  MPa m...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540047
EISBN: 978-1-62708-309-6
... + 6 ( τ x y 2 + τ y z 2 + τ z x 2 ) Fig. 2.12 Octahedral plane ( ACE ) and planes of maximum shear ( ACDF and BGEO ) The octahedral strain is given by: (Eq 2.26c) γ oct = 2 3    ⋅ ( ε 1...
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 December 2003
DOI: 10.31399/asm.tb.cfap.t69780404
EISBN: 978-1-62708-281-5
... uncontrollable manner, resulting in an unstable, brittle fracture. In terms of linear elastic fracture mechanics, the criterion of brittle fracture in the tensile crack opening mode is described by the stress-intensity factor, K I , at the crack tip, reaching a critical value, K Ic , for the plane-strain...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610001
EISBN: 978-1-62708-303-4
... to a critical value. This critical value is often taken as a property of the material called the plane-strain fracture toughness, conventionally denoted as K Ic . When equality is achieved between K and K Ic , the crack is presumed to grow in an uncontrollable manner. Hence, the structure can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410405
EISBN: 978-1-62708-265-5
... shear plane have participated in the ductile fracture process, and few inclusion particles were present on those localized shear planes. The very fine transition carbides, although very important in strain hardening, are too fine to be involved in the ductile fracture process. Fig. 18.18...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610055
EISBN: 978-1-62708-303-4
... the presence of shear lips on the fracture surface. Fig. 38 Schematic of variation in fracture toughness and macroscale features of fracture surfaces for an inherently ductile material. As section thickness ( B ) or preexisting crack length ( a ) increases, plane-strain conditions develop first...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630081
EISBN: 978-1-62708-270-9
... Abstract A brittle fracture occurs at stresses below the material's yield strength (i.e., in the elastic range of the stress-strain diagram). This chapter focuses on brittle fracture in metals and, more specifically, ferrous alloys. It lists the factors that must all be present simultaneously...
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 area under a stress-strain curve. As a result, when impacted, a metal structure will typically deform but not actually fracture. In contrast, composites are relatively brittle. A comparison of typical tensile stress-strain curves for the two materials is shown in Fig. 7 . The brittleness of the...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630101
EISBN: 978-1-62708-270-9
... that there has been extensive stretching, or elongation, of the grains of metal in the reduced area, particularly near the fracture. As noted above, shear stress dominates deformation and ductile fracture. In most cases, the 45° plane of maximum shear stress components is not obvious or readily...