1-20 of 164 Search Results for

linear elastic fracture mechanics

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
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 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 kinetics...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540169
EISBN: 978-1-62708-309-6
... Abstract This chapter discusses various types of material fracture toughness and the methods by which they are determined. It begins with a review of the basic principles of linear elastic fracture mechanics, covering the Griffith-Irwin theory of fracture, the concept of strain energy release...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780216
EISBN: 978-1-62708-281-5
... their associated results. A brief discussion on the linear elastic fracture mechanics method is presented, along with an example of its effectiveness as a predictive tool for impact performance. Various issues with a bearing on impact performance, such as processing, chemical attack, and aging, are also...
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
... upon crack extension is the driving force for fracture in a cracked material under load. This chapter provides a summary of Griffith’s work and the subsequent development of linear elastic and elastic-plastic fracture mechanics. It includes detailed illustrations and examples, familiarizing readers...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540281
EISBN: 978-1-62708-309-6
... mechanics time-dependent crack growth THE CONCEPT OF LINEAR-ELASTIC FRACTURE MECHANICS (LEFM) assumes that the stress-intensity factor K is a valid fracture index and that the material behaves in a “brittle” manner. As a rule of thumb, the applicability of Eq 4.2(b) is limited to a crack-tip...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.9781627083096
EISBN: 978-1-62708-309-6
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540001
EISBN: 978-1-62708-309-6
...) Linear elongation along the loading direction. (b) Free body diagram. (c) Linear relationship between force and elastic deformation (or stress and elastic strain) As shown in Fig. 1.2(b) , the external load P is balanced by the internal resisting force σ · A , where σ is the stress normal to...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540319
EISBN: 978-1-62708-309-6
... stronger than the baseline/unreinforced matrix material. Because of the mechanical properties of the fibers, most composites maintain an elastic behavior in their stress-strain relationship. Many types of composite systems have been developed. Detailed descriptions of the fiber and the matrix materials...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780211
EISBN: 978-1-62708-281-5
... elastic fracture toughness, testing of thin sheets and films, normalization methods, and hysteresis methods. fracture resistance testing polymers linear elastic fracture toughness J-integral testing thin sheets thin films normalization methods hysteresis methods POLYMERIC MATERIALS are...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540047
EISBN: 978-1-62708-309-6
... cracking, and so different fracture criteria are needed for ductile and brittle fracture under static (monotonic) loads. From the standpoint of continuum mechanics, brittle cracking is largely an elastic process with a rapid release of stored mechanical energy. In this case, the work (or expended energy...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410405
EISBN: 978-1-62708-265-5
... martensite in 0.14% C steel. (a) Bright field TEM micrograph. (b) Dark field TEM micrograph taken with diffracted beam from interlath austenite (bright linear features). Source: Ref 18.5 Fig. 18.5 Engineering stress-strain curves for as-quenched martensite in 0.14% C steel tested at various...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610377
EISBN: 978-1-62708-303-4
... aluminum is shown in Fig. 6 . Table 1 Composites vs. metals comparison Condition Comparative behavior relative to metals Load-strain relationship More linear strain to failure Notch sensitivity Static Greater sensitivity Fatigue Less sensitivity Transverse properties Much...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610001
EISBN: 978-1-62708-303-4
... cracking and thus should be considered when predicting useful product life. brittle fracture fatigue cycles linear elastic fracture mechanics material defects stress intensity structural design IT IS OFTEN STATED that history repeats itself. Yet, when it comes to the failure of structural...
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
... deform plastically at the notch, the toughness is reduced. In addition, impact loading reduces the thermal energy available for plastic deformation, further reducing the toughness. Prior to the formulation and maturity of linear elastic fracture mechanics, the notch toughness characteristics of low...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780404
EISBN: 978-1-62708-281-5
... uncontrollable manner, resulting in an unstable, brittle fracture. In terms of linear elastic fracture mechanics, the criterion of brittle fracture in the tensile crack opening mode is described by the stress-intensity factor, K I , at the crack tip, reaching a critical value, K Ic , for the plane-strain...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610327
EISBN: 978-1-62708-303-4
... Abstract This chapter covers the fatigue and fracture behaviors of ceramics and polymers. It discusses the benefits of transformation toughening, the use of ceramic-matrix composites, fracture mechanisms, and the relationship between fatigue and subcritical crack growth. In regard to polymers...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410213
EISBN: 978-1-62708-265-5
... characterized by a straight line, and strain is reversible when load is decreased. A yield strength is established on reaching a stress level sufficient to produce dislocation motion and measurable permanent change in dimension. Often, yield strength is determined at an offset to the linear portion of the curve...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780204
EISBN: 978-1-62708-281-5
... high molecular weights. If a rectangular test specimen is strained in tension and the resultant stress is determined, Young’s modulus can be determined from the slope of the engineering stress-strain curve. For conventional structural materials such as steel, whose behavior is linear, the modulus...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2013
DOI: 10.31399/asm.tb.uhcf3.t53630117
EISBN: 978-1-62708-270-9
... to straight linear features, such as slip lines or other features related to microstructure. Fig. 4 Highly enlarged schematic cross-sectional sketch of stage 1 and stage 2 fatigue. The edge of the metal is at left. When tensile forces repeatedly act on the surface, the microstructural changes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130087
EISBN: 978-1-62708-284-6
... leaving the subject of deformation, consider a small spring clip that was designed to be used at the top of the linear portion of the stress-strain curve. Why would anyone design a spring to be used at a stress almost at the nominal yield strength? No experienced metallurgical engineer would expect each...