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fracture modes

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Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630063
EISBN: 978-1-62708-270-9
...Abstract Abstract From a fundamental standpoint, there are only two modes, or ways, in which metals can fracture under single, or monotonic, loads: shear and cleavage. There are fracture modes other than shear and cleavage. These include intergranular and quasi-cleavage fracture modes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780404
EISBN: 978-1-62708-281-5
... introduces the subject of fractography and how it is used in failure analysis. The discussion covers the structure of and fracture and crack-propagation behavior of polymeric materials, the distinction between the ductile and brittle fracture modes on the basis of macroscopic appearance, and the examination...
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
... concentration. Fig. 13.1 Comparison of brittle and ductile fracture modes 13.1 The Brittle Fracture Problem 13.2 Brittle and Ductile Fracture 13.3 Ductile-to-Brittle Transition Testing 13.4 Griffith Theory of Brittle Fracture 13.5 Fracture Mechanics 13.6 Plasticity Corrections 13.7...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240265
EISBN: 978-1-62708-251-8
... Creep The three primary modes of elevated fracture are rupture, transgranular fracture, and intergranular fracture, as illustrated in Fig. 15.11 . Rupture, which is characterized by a reduction of area approaching 100%, occurs at high stresses and high temperatures. This type of failure can occur...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270025
EISBN: 978-1-62708-301-0
..., and optical and electron microscopy. It presents a number of images recorded using these methods and explains what they reveal about the mode of fracture and the state of the component prior to failure. fractography microscopic examination macroscopy IN FAILURE ANALYSIS, examination is done...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270031
EISBN: 978-1-62708-301-0
.... The chapter also covers quantitative fractography, fracture surface topography analysis, and the use of oxide dating as well as fault tree and failure modes and effects analysis (FMEA) and computational techniques. fault tree analysis fracture surface topography analysis oxide dating quantitative...
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
... of a fracture that may have originated with a fatigue or brittle fracture. As pointed out in Chapter 6, “Basic Single-Load Fracture Modes,” in this book, ductile fractures are those in which the shear stress exceeds the shear strength before any other mode of fracture can occur. Therefore...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610055
EISBN: 978-1-62708-303-4
... J (10 or 15 ft · lbf). Ductile Fracture Brittle Fracture Macroscopic Ductile and Brittle Fracture Surfaces Ductile-to-Brittle Transition in Steels Intergranular Failures Causes of Steel Embrittlement Combined Fracture Modes Acknowledgments References References 1...
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
...-shaped pattern radiating from the origin region in the upper left corner. When viewed under the electron microscope, this type of fracture is likely to reveal a cleavage or quasi-cleavage fracture mode. (b) Fracture surface of a large (~5-¾ × 6 in.) equalizer bar made from D6B steel heat treated...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780109
EISBN: 978-1-62708-268-6
..., or leak. They may not meet drawing requirements and fail as a nonconformance consequence. An examination of the failed system and its components can confirm or refute the existence of hypothesized failure modes in each of these categories. Corrosion Fractures Deformation Mechanical Interference...
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 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...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130111
EISBN: 978-1-62708-284-6
... the process of crack initiation or extension. Crack extension also can be multimode over time (e.g., fatigue crack growth followed by overload). In terms of fracture appearances (or fracture modes, defined earlier in the section “Determination of Failure Mechanism” in this chapter), a general summary...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090221
EISBN: 978-1-62708-266-2
... for further details. The ammonia-brass system has dominated mechanistic studies of SCC of copper-base alloys (e.g., Ref 7.69 ). Such studies generally have been divided according to fracture mode: intergranular and transgranular. There is no consensus as to whether these modes correspond to two different...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130503
EISBN: 978-1-62708-284-6
..., interdendritic, or cleavage modes of fracture, which occur at stress levels well below the yield stress. Additionally, even failures by quasi-cleavage and/or microvoid coalescence can occur at reduced levels of ductility. Such cracking is illustrated in discontinuities 11 and 12a through 12g in Fig. 1...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490183
EISBN: 978-1-62708-340-9
...Abstract Abstract This chapter covers the failure modes and mechanisms associated with boiler components and the tools and techniques used to assess damages and predict remaining component life. It begins with a review of the design and operation of a utility boiler and the materials used...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490329
EISBN: 978-1-62708-340-9
...Abstract Abstract This chapter covers the failure modes and mechanisms of concern in hydroprocessing reactor vessels and the methods used to assess lifetime and performance. It begins with a review of the materials used in the construction of pressure-vessel shells, the challenges they face...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630237
EISBN: 978-1-62708-270-9
...Abstract Abstract Elevated-temperature failures are the most complex type of failure because all of the modes of failures can occur at elevated temperatures (with the obvious exception of low-temperature brittle fracture). Elevated-temperature problems are real concerns in industrial...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780216
EISBN: 978-1-62708-281-5
... Effect of Strain Rate and Temperature on Failure Mode Impact Tests Fracture Mechanics and Impact Failure Other Engineering Considerations Small-Rotation Assumption and Beams Small-Rotation Assumption and Plates Instability and Collapse of Thin Plastic Components To design plastic...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.tb.sfa.t52780093
EISBN: 978-1-62708-268-6
... easily enlarge an area, and, in many situations, low-power magnification may be all that is necessary to show the presence of a hypothesized failure mode. This is often the case for fractured parts, because low-power magnification can be sufficient to reveal surface fractography and, based...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130001
EISBN: 978-1-62708-284-6
... model, a thermomechanical model, and a thermochemical model ( Fig. 41 ), is considered. Heat Transfer Model Solid-Phase Transformation Model Thermomechanical Modeling Brittle Fracture Temper Embrittlement Aging Tendency Hardening Tendency Cold Cracking Segregation Tendency...