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nonlinear fracture mechanics

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540281
EISBN: 978-1-62708-309-6
... Abstract Large-scale yielding at the crack tip and time-dependent crack growth mechanisms, such as stress relaxation due to creep, are nonlinear behaviors requiring nonlinear analysis methods. This chapter presents two such methods, one based on elastic-plastic fracture mechanics, the other on...
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
... test standards. Whether the fracture is ductile or brittle does not directly influence the deformation process that a component or specimen may undergo during the measurement of toughness. The deformation process is generally described as being linear elastic or nonlinear. This determines which...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540319
EISBN: 978-1-62708-309-6
... stress and strain systems, failure mechanisms, and fatigue and fracture of these composites are covered here. Discussions will be kept in generic terms equally applicable to other composite systems whose laminae are reinforced with continuous fibers. References 8.1...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540001
EISBN: 978-1-62708-309-6
... common crystal structures in most engineering metals include face-centered cubic (fcc), body-centered cubic (bcc), or hexagonal close-packed (hcp) structures. Deformation and fracture mechanisms of metals are described in Appendix 1 . Ceramics and glasses, which have strong ionic-covalent chemical...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540047
EISBN: 978-1-62708-309-6
... they reveal about the load-carrying characteristics of engineering materials. It then discusses the use of failure criteria and the determination of yielding and fracture limits. It goes on to describe the mechanisms and appearances of brittle and ductile fractures and stress rupture, providing...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630013
EISBN: 978-1-62708-270-9
... the effects of temperature variations on mechanical properties, both in tension and in compression. The nonlinear behavior of gray cast iron caused by the graphite flakes is then described. Finally, the effect of stress concentrations on high-strength metals is considered. elastic deformation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540169
EISBN: 978-1-62708-309-6
... elastic fracture mechanics, elastic-plastic fracture mechanics, and time-dependent fracture mechanics. The basic principles and applications of linear elastic fracture mechanics (LEFM) are dealt with in the remainder of this chapter and in Chapter 5 . Nonlinear fracture mechanics, which includes the...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780211
EISBN: 978-1-62708-281-5
... justifies attention on that ground alone. A concurrent development, which now is used in the testing of polymers, is the J -integral method; it is essentially the equivalent of G I for a nonlinear system. Discovered by Rice ( Ref 16 , 17 ) and developed independently by other investigators ( Ref 18...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090001
EISBN: 978-1-62708-266-2
...-intensity on crack propagation rates, and describes several mechanical fracture models, including corrosion tunnel, film-induced cleavage, and tarnish rupture models. crack initiation crack propagation stress-corrosion cracking STRESS-CORROSION CRACKING (SCC) is a term used to describe service...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870373
EISBN: 978-1-62708-314-0
... unidirectional aramid composites respond elastically when loaded in tension, they exhibit nonlinear ductile behavior under compression. At a compression strain of only 0.3 to 0.5 percent, a yield is observed ( Fig. 14.4 ). This corresponds to the formation of structural defects known as kink bands , which are...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540215
EISBN: 978-1-62708-309-6
... creep-fatigue crack growth are also discussed. Linear-elastic fracture mechanics is the base for all the methods presented in these two chapters. Chapter 6 discusses methods based on nonlinear fracture mechanics, which are suitable for fatigue crack growth and/or fracture due to excessive yielding at...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780216
EISBN: 978-1-62708-281-5
... continuum mechanics and nonlinear material behavior ( Ref 16 ), the effects of the large-strain material properties of plastics on puncture resistance can be investigated. The details of the modeling approach and assumptions are discussed in Ref 15 , 17 , and 18 . Figure 15 illustrates the axisymmetric...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780185
EISBN: 978-1-62708-281-5
...-filament tension test and the two tensile test of a group or strand of fibers. Because plastics are viscoelastic materials, stress-strain relationships are nonlinear and curved (usually convex upward). The curvature arises from two causes. First, the deflection axis is simultaneously a time axis...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030126
EISBN: 978-1-62708-282-2
... factor, K ); when a critical value of stress concentration, K crit , is reached, mechanical fracture results. Although stress concentration does occur at such flaws, these defects do not exceed the critical value required to cause mechanical fracture of the material in an inert environment ( K SCC...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610549
EISBN: 978-1-62708-303-4
.... Straightening of a warped tensile specimen during the test will result in a nonlinear indication on the initial portion of the stress-strain curve. This can be corrected to a line by using curve-fitting software or by drawing a line by eye back to the abscissa, as shown in Fig. 5 . There may also be...
Series: ASM Technical Books
Publisher: ASM International
Published: 15 June 2021
DOI: 10.31399/asm.tb.mpktmse.9781627083843
EISBN: 978-1-62708-384-3
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780359
EISBN: 978-1-62708-281-5
... constituents. Fourier transform infrared spectroscopic analysis can provide information regarding the presence of additives and filler materials. Due to the nonlinearity of infrared absorptivity of different molecular bonds, it is not possible to accurately state minimum concentration detection limits. However...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.t65940271
EISBN: 978-1-62708-302-7
.... Ford F.P. , Current Understanding of the Mechanisms of Stress Corrosion and Corrosion Fatigue , Environment-Sensitive Fracture: Evaluation and Comparison of Test Methods , STP 821, Dean S.W. , Pugh E.N. , and Ugiansky G.M. , Ed., ASTM , 1984 , p 32 – 51 111. Parkins...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780314
EISBN: 978-1-62708-281-5
... demonstrated that a wet composite will creep at 93 °C (200 °F) to the same extent as a dry one at approximately 113 °C (235 °F). Furthermore, nonlinearity in the Boltzmann sense was introduced at lower stress because of the increase in compliance. In addition, other failure mechanisms peculiar to the effect of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540121
EISBN: 978-1-62708-309-6
.... , Theory of Stress Concentration for Shear-Strained Prismatic Bodies with Arbitrary Nonlinear Stress-Strain Law , J. Appl. Mech. (Trans. ASME) E , Vol 28 , 1961 , p 544 – 550 10.1115/1.3641780 3.41. Beardmore P. and Feltner C.E. , Cyclic Deformation and Fracture Characteristics of...