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static fracture toughness

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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
... dynamics of a fracture event (quasi-static versus dynamic/impact loading) In this article, the basic types of fracture processes (ductile, brittle, fatigue, and creep) are described briefly, principally in terms of fracture appearances (as sometimes affected by the microstructure). More in-depth...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006767
EISBN: 978-1-62708-295-2
... stresses to be only functions of x and y . The stress transformation technique can be illustrated easily in two dimensions by using the principles of statics. In two dimensions, only three of the six stress components are used: σ x , σ y , τ xy . These can be shown on a 2D stress element ( Fig...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001831
EISBN: 978-1-62708-181-8
... fracture modes, such as dimple rupture or cleavage. The rate of crack growth increases during Stage III until the fatigue crack becomes unstable and the part fails. Because the crack propagation is increasingly dominated by the static fracture modes, Stage III fatigue is sensitive to both microstructure...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003225
EISBN: 978-1-62708-199-3
... occur without warning under static loading at stresses well below the yield strength. Brittle fracture is induced by low temperatures, high strain rates, and a state of triaxial tensile stresses, such as produced by a notch. Only two of the three are necessary to initiate brittle fracture. In many...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
... include strength, corrosion resistance, heat treatment condition, flaw size, surface finish, bend radius, void content (i.e., in a casting), degree of sensitization, and so on. Examples of service conditions include magnitude of stress (either cyclic or static), exposure temperature, aggressiveness of...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004017
EISBN: 978-1-62708-185-6
... processes that occur during deformation are called dynamic processes, while those that occur between intervals of deformation or after deformation is completed are called static processes. The two dynamic processes involved in hot working are dynamic recovery and dynamic recrystallization. Dynamic...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006761
EISBN: 978-1-62708-295-2
... specimen, Izod impact sample, drop weight impact test, dynamic-tear specimen, and plane-strain fracture toughness specimens under static loading ( K Ic ) and impact loading ( K Id ). Traditionally, the notch toughness characteristics of low- and intermediate-strength steels have been described in...
Series: ASM Handbook
Volume: 12
Publisher: ASM International
Published: 01 January 1987
DOI: 10.31399/asm.hb.v12.a0001834
EISBN: 978-1-62708-181-8
... Abstract This article presents examples of the visual fracture examination that illustrate the procedure as it applies to failure analysis and quality determination. It describes the techniques and procedures for the visual and light microscopic examination of fracture surfaces with...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003104
EISBN: 978-1-62708-199-3
... heat treatment on fracture toughness of steels. carbon steels classification of wear effect of alloying elements fatigue failure forms of embrittlement fracture toughness low-alloy steels notch toughness wear resistance WEAR of metals occurs by the plastic displacement of surface...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003060
EISBN: 978-1-62708-200-6
... low-expansion metals. The design of ceramic static components requires a different approach. In contrast to rotor-shaft attachments, which are single-point attachments where no relative ceramic-to-metal movement is experienced, attachments of ceramic static structure components to metal engine...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003241
EISBN: 978-1-62708-199-3
... hardness testers, which can be either portable instruments or laboratory devices. Only static indentation and rebound testing are discussed in this article. These two methods account for virtually all routine hardness testing in the metalworking industry. Static indentation hardness testing is the more...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003058
EISBN: 978-1-62708-200-6
..., the roughness of the mirror region will be dictated by the scale of the microstructure. As a catastrophic crack continues to spread out from the origin under the influence of a constant applied stress, it may accelerate until it reaches its “terminal” velocity. Under static loading conditions...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003061
EISBN: 978-1-62708-200-6
... parameters affecting wear of ceramics, namely, hardness, thermal conductivity, fracture toughness, and corrosion resistance. The next part of the article addresses temperature-resistant applications of advanced ceramics. Specific applications of ceramic materials addressed include cutting tools, pump and...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005324
EISBN: 978-1-62708-187-0
... of a frequency dependence for the number of cycles to failure. Phenomena of stress-corrosion cracking and corrosion fatigue need to be investigated for application involving static or cyclic stresses in environments corrosive to ductile iron. The fatigue limit of ductile iron can be increased...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003064
EISBN: 978-1-62708-200-6
... Abstract Carbon-carbon composites (CCCs) are introduced in fields that require their high specific strength and stiffness, in combination with their thermoshock resistance, chemical resistance, and fracture toughness, especially at high temperatures. The use of CCCs has expanded as the price of...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003057
EISBN: 978-1-62708-200-6
.... The article describes testing methods such as room and high-temperature strength test methods, proof testing, fracture toughness measurement, and hardness and wear testing. It also explains methods for determining thermal expansion, thermal conductivity, heat capacity, and emissivity of ceramics and...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003224
EISBN: 978-1-62708-199-3
... data that can be gathered includes: Material specifications Design operating conditions Length of service Temperatures and pressures Static and dynamic loading conditions Corrosive and erosive conditions Vibration and cyclic loading Testing, inspection, and maintenance...
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
... characteristics can act singly or combine synergistically to reduce the strength, ductility, and toughness of metallic materials. These factors must also be considered in the evaluation and prevention of overload failures. Therefore, throughout this article, the term overload failure implies fracture due to...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
... variation in stress, which corresponds with static loading. The S - N curve is the basis for fatigue design and shows the relationship between a constant stress amplitude, S a (or stress range, Δ S ), and the number of cycles to failure, N . The regions of the curve can be separated into the quasi...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009003
EISBN: 978-1-62708-185-6
... that occur between intervals of deformation or after deformation is completed are called static processes . The two dynamic processes involved in hot working are dynamic recovery and dynamic recrystallization . Dynamic recovery results from the annihilation of dislocations due to ease of cross...