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Mixed-mode fracture

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Published: 01 December 2004
Fig. 54 SEM images of a mixed-mode fracture surface with indications of transgranular brittle and ductile cracking from an as-cast state 356 alloy tensile-test specimen. The area of the crack initiation is visible in the center of (a), and fracture went through the cleavage planes More
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Published: 01 January 2002
Fig. 12 Mixed mode fracture in a mild carbon steel cooled just to the ductile/brittle transition More
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Published: 15 January 2021
Fig. 12 Mixed-mode fracture in a mild carbon steel cooled just to the ductile/brittle transition More
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Published: 01 January 1986
Fig. 17 XPS survey of oxygen-fired fracture surface. The mixed mode of fracture accounts for the metallic and glass peaks. Note the nickel peaks at approximately 850 eV. More
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002366
EISBN: 978-1-62708-193-1
... Abstract This article provides information on the typical experimental observations of formation and propagation of small fatigue cracks under various stress states and explores the relation to long crack fracture mixed-mode fracture mechanics. It discusses state I crystallographic and stage II...
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Published: 01 November 1995
(constant-stress-rate loading) data. Strength degradation in water is predicted for a dynamic load of 1 MPa/s. A mixed-mode fracture criterion was chosen to account for the change in surface flaw reliability for multiaxial stress states. Source: Ref 13 More
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Published: 01 January 2002
Fig. 46 Fisheyes in E7018 weld metal. (a) Fisheyes in as-welded tensile specimen tested at room temperature. Optical macrograph. (b) Mixed-mode fracture in as-welded three-point bend test specimen at room temperature (SEM). Optical fractograph More
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Published: 30 August 2021
Fig. 14 (a) Brittle fisheyes appear as bright spots in gray ductile matrix. Original magnification: 1.7×. (b) Mixed-mode fracture in as-welded three-point bend-test specimen at room temperature (scanning electron microscope). Optical fractography. Original magnification: 1500× More
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003380
EISBN: 978-1-62708-195-5
... , 24 25 ). For predicting delamination onset in two-dimensional problems, the peak value of the G versus a distribution is compared to the mixed-mode fracture criterion of Fig. 3 . The VCCT technique has also been extended to three-dimensional problems ( Ref 26 ), including those involving...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003320
EISBN: 978-1-62708-176-4
... the initial small crack, such as crack branching ( Ref 1 ) and kinking ( Ref 19 ), can be investigate. The threshold condition of a small crack can be studied based on the mixed-mode fracture mechanics analysis of a semielliptical crack ( Fig. 3 ). Fig. 22 Initial small surface crack introduced...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000600
EISBN: 978-1-62708-181-8
... that results in an intergranular fracture path. Fractures resulting from the synergistic interaction of a corrosive environment and applied stress that are entirely transgranular would be listed under “Cleavage.” (c) This category includes quasi-cleavage; mixed-mode fractures; overload failures involving...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003543
EISBN: 978-1-62708-180-1
... Abstract Overload failures refer to the ductile or brittle fracture of a material when stresses exceed the load-bearing capacity of a material. This article reviews some mechanistic aspects of ductile and brittle crack propagation, including a discussion on mixed-mode cracking, which may also...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
... the general aspects of fracture modes and mechanisms. The article briefly reviews some mechanistic aspects of ductile and brittle crack propagation, including discussion on mixed-mode cracking. Factors associated with overload failures are discussed, and, where appropriate, preventive steps for reducing...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006769
EISBN: 978-1-62708-295-2
... appearance. Figure 11(d) shows an example of a classic transgranular brittle fracture caused by stress-corrosion cracking in stainless steel. Mixed-Mode Failure In many instances, the fracture consists of both ductile and brittle regions. An example of such a mixed-mode fracture, consisting...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003466
EISBN: 978-1-62708-195-5
... by opening up the laminate in the plane of the delamination under mode I tension or mixed-mode loading. Visually, the delamination will generally exhibit a whitish, damaged surface, as compared to the darker, smoother, reflective surface of the manually fractured region. The delamination due to impact...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003533
EISBN: 978-1-62708-180-1
... of intergranular failure due to stress-corrosion cracking. Mixed Mode Failure In many instances, the fracture consists of both ductile and brittle regions. An example of such a mixed mode fracture, consisting of ductile tear and brittle cleavage, is shown in Fig. 12 . This example is a good illustration...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003330
EISBN: 978-1-62708-176-4
... fracture modes, namely, crack opening mode, shearing mode, and tearing mode. It presents an overview of fatigue testing and fatigue damage mechanisms of composite materials and reviews the types of mechanical measurements that can be made during the course of testing to assess fatigue damage. The article...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
... ductile when the fracture surfaces are oriented at an angle of approximately 45° to the maximum normal stress. A fracture surface displaying both types of planes can be described as a mixed-mode fracture. Fig. 14 Schematic of variation in fracture toughness and macroscale features of fracture...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
... that are perpendicular to the applied load without evidence of prior deformation. Macroscale fracture surfaces can have a mixed-mode appearance (brittle-ductile or ductile-brittle). The brittle-ductile sequence is more common on the macroscale, while the appearance of the ductile portion is typically microscale...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003226
EISBN: 978-1-62708-199-3
... Abstract Fractography is the systematic study of fractures and fracture surfaces. It is a useful tool in failure analysis and provides a means for correlating the influence of microstructure on the fracture mode of a given material. This article discusses the preservation, preparation...