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monotonic fracture

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Series: ASM Handbook Archive
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0000603
EISBN: 978-1-62708-181-8
... Abstract This article is an atlas of fractographs that covers pearlitic and ferritic ductile irons. The fractographs display the following: brittle cleavage fracture; fatigue crack propagation; fatigue and monotonic fracture surfaces; fracture modes in slow monotonic loading and impact loading...
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Published: 01 January 1996
Fig. 21 Monotonic strength, ductility, and fracture toughness as a function of hardness for a medium-carbon steel (SAE 1045). σ f is true fracture strength, S y is yield strength More
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002352
EISBN: 978-1-62708-193-1
... Abstract This article provides a brief description of the different types of micromechanisms of monotonic and cyclic fracture. General information on the material variables that have the most beneficial effect on resistance to failure is presented. The article discusses the various stages...
Image
Published: 15 January 2021
toughness varies with crack propagation direction in monotonic loading, the Paris law exponent also depends on crack propagation direction. K c , plane-stress fracture toughness; K Ic , plane-strain fracture toughness More
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Published: 01 January 2002
Fig. 42 Fatigue crack propagation rate versus stress intensity factor range. Fatigue striations may be present on the fracture surface for loading in the linear portion of the curve (Paris Law region), and permit analytical estimations of life to fracture. Just as fracture toughness varies More
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002396
EISBN: 978-1-62708-193-1
... by grain size and alloying ( Ref 24 ) Martensitic Alloys Quenched-and-tempered martensitic steels, as a class, offer the greatest latitude in tailoring properties for fatigue resistance. Monotonic strength, ductility, and fracture toughness properties for SAE 1045 steel are shown in Fig. 21...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 2024
DOI: 10.31399/asm.hb.v12.a0006842
EISBN: 978-1-62708-387-4
..., sometimes the plastic deformation is more subtle, such as the reduced section thickness at the fracture location in a thin-walled component. Nonetheless, the categorization of a fracture as ductile on the macroscale indicates that the possible failure mechanisms are monotonic ductile overload, very-low...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002417
EISBN: 978-1-62708-193-1
... , 6 , 7 ), attributable solely to cyclic variations in imposed loads. This section briefly reviews the key mechanisms and mechanical features of cyclic fatigue in ceramics. Fractographic features of ceramic fatigue can resemble fractographs of monotonic overload failures, because fatigue fracture...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002364
EISBN: 978-1-62708-193-1
...% True fracture strength, σ f , ksi 0.5 to 5 × 10 2 True fracture ductility, ε f Zero to 2 Strain-hardening exponent, n Zero to 0.5 Monotonic and cyclic stress-strain properties of selected steels Table 2 Monotonic and cyclic stress-strain properties of selected steels Alloy...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002398
EISBN: 978-1-62708-193-1
... Abstract This article summarizes the general fatigue and fracture properties of cast steels, namely, toughness, fatigue, and component design factors such as section size and discontinuities. It describes the various factors that influence fatigue of cast steels. These factors include section...
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
... of polymeric and ceramic materials are also included. (Fractography of electronic components is addressed in detail in Ref 1 .) In summary, the following are key features in distinguishing between monotonic versus fatigue fracture and ductile versus brittle fractures (on either a macroscale or microscale...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006918
EISBN: 978-1-62708-395-9
... affected by the monotonic fracture process associated with the maximum portion of the loading cycle as it approaches a critical stress-intensity level ( Ref 61 , 83 , 94 ). In general, these polymers are susceptible to crazing, chain scission, fibrillation, or cross-link rupture. For these polymers...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003318
EISBN: 978-1-62708-176-4
... with increasing mean stress are most likely affected by the monotonic fracture process associated with the maximum portion of the loading cycle as it approaches a critical stress intensity level. In general, these polymers are susceptible to crazing, chain scission, or crosslink rupture. For these polymer types...
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
... montonic versus fatigue fracture and ductile versus brittle fractures (on either a macroscale or microscale): Monotonic versus fatigue fracture: Beach marks and striations indicate fatigue, but their absence does not confirm fracture from monotonic loads. Fracture surfaces from fatigue do...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006776
EISBN: 978-1-62708-295-2
... or hundreds of cycles, the microscale fracture surface appearance or morphology may be similar to monotonic ductile overload failures (i.e., microvoid coalescence or dimpled rupture). In general, the discussion of fatigue fracture appearance in this article does not apply to very-low-cycle fatigue failures...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003321
EISBN: 978-1-62708-176-4
... of selected steels Table 1 Monotonic and cyclic stress-strain properties of selected steels Alloy Condition (a) Elastic modulus ( E ) Yield strength ( S y ) Tensile strength ( S u ) Strength coefficient ( K ) Strain hardening exponent ( n ) Reduction in area, % True fracture stress (σ f...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002420
EISBN: 978-1-62708-193-1
... lines. D is the tensile ductility, σ f is the fracture stress (load at fracture divided by cross-sectional area after fracture), and UTS is conventional ultimate tensile strength. Source: Ref 1 , 2 These four empirical constants ( b, c, σ f ′ , ε f ′ ) form the basis...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002469
EISBN: 978-1-62708-194-8
... in Fatigue and Fracture, Volume 19 of ASM Handbook ( Ref 1 ). This article reviews “traditional” methods of fatigue design. In recent years, the fracture mechanics approach to crack propagation has gained acceptance in the prediction of fatigue life. In this approach, crack initiation is neglected...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003328
EISBN: 978-1-62708-176-4
... Abstract This article provides an overview of the safety aspects and integrity concept for pressure vessels, piping, and tubing. It focuses on the fracture mechanics approaches used to validate components with longitudinal cracks and circumferential cracks and to analyze crack growth behavior...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002351
EISBN: 978-1-62708-193-1
... of the stress-intensity parameter With this information and the use of fracture mechanic methods (as briefly described in the next section for monotonic and fatigue fracture), it is possible to compute the life without any consideration of those processes that determine the values of the fracture...