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elastic strain

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090367
EISBN: 978-1-62708-266-2
... to determine elastic strain, plastic strain, and residual stress responses. It also describes the difference between smooth and precracked specimens and how they are used, provides information on slow-strain-rate testing and how to assess the results, and discusses various test environments and procedures...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610025
EISBN: 978-1-62708-303-4
...Abstract Abstract This chapter discusses the stress-strain response of materials, how it is measured, and how it used to set performance expectations. It begins by describing the common tensile test and how it sheds light on the elastic design of structures as well as plasticity and fracture...
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
... to the cohesive strength of the material. This has been demonstrated with defect-free single-crystal whiskers that do indeed approach their theoretical strength. Griffith developed a criterion for the elliptical crack in a plate using an energy balance approach. He equated the elastic strain energy...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540001
EISBN: 978-1-62708-309-6
... elastic and plastic materials and viscous substances. It then describes the stress-strain response of two- and three-dimensional solids, explaining how to determine principle stresses and strains using Mohr’s circle and how to derive equivalent stress and strain using the von Mises relationship...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400053
EISBN: 978-1-62708-316-4
... and how hardening laws are used to predict strain-hardening behaviors. elastic strain levy-mises equations plastic deformation sheet metal forming strain hardening strain rate WHEN A MATERIAL is deformed, two types of deformation occur: elastic and plastic. Elastic deformation is always...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240201
EISBN: 978-1-62708-251-8
... after cold working. The development of the Bauschinger effect is demonstrated in Fig. 12.21 . When a tensile specimen is loaded to a plastic strain (point 2), it strain hardens since the yield strength (point 1) has been exceeded. When the load is removed, the specimen contracts elastically along...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2012
DOI: 10.31399/asm.tb.smff.t53400027
EISBN: 978-1-62708-316-4
... is the change of length relative to the initial length. This strain is called the engineering strain. Note two facts for this simple case: The strain value is the same for any point of the strip. The strain under load consists the elastic strain , which is the recoverable part of the total strain...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730023
EISBN: 978-1-62708-283-9
..., elasticity, plastic deformation, ductility, hardness, creep, fatigue, and fracture. It also describes the primary components of a Charpy impact tester and the role they serve. creep ductility elasticity fatigue fracture failure hardness impact test plastic deformation strain stress tension...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490021
EISBN: 978-1-62708-340-9
... lifetime and failure. It begins with a review of the ductile-to-brittle transition behavior of steel and the different ways to measure transition temperature. It then explains how to predict fracture loads using linear-elastic fracture mechanics and how toughness is affected by temperature and strain rate...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610147
EISBN: 978-1-62708-303-4
... Comparison of Goodman, Gerber, and Soderberg relationships. Source: Ref 2 If the design is based on the yield strength, then the yield strength (σ y ) can be used instead of the ultimate strength (σ u ). Data Scatter During cyclic loading within the elastic regime, stress and strain...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060149
EISBN: 978-1-62708-261-7
...-Elastic Plain-Strain Fracture Toughness K Ic of Metallic Materials , ASTM E 399 , ASTM International 7.10 Standard Practice for Strain-Controlled Fatigue Testing , ASTM E 606 , ASTM International 7.11 Cartz L. , Quality Control and NDT , Nondestructive Testing , ASM International...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610415
EISBN: 978-1-62708-303-4
... elastic strain under load (ε o ) is not usually identified as a stage of creep deformation, and it is common practice to ignore this contribution to total strain when plotting creep curves. Therefore, creep curves generally show only the time-dependent plastic strain that follows this initial elastic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 February 2005
DOI: 10.31399/asm.tb.chffa.t51040017
EISBN: 978-1-62708-300-3
... of the principal axes. The assumption of volume constancy made earlier neglects the elastic strains. This assumption is reasonable in most forming processes where the amount of plastic strain is much larger than the amount of elastic strain. This assumption can also be expressed, for the deformation along...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780199
EISBN: 978-1-62708-281-5
... Abstract Abstract This article describes the general aspects of and practical problems of failure analysis of creep, stress relaxation, and yielding for homogeneous polymers. The effect of temperature and strain rate on the relationship between yield point and elastic modulus and the aging effect...
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 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...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240243
EISBN: 978-1-62708-251-8
... stress to stress amplitude During cyclic loading within the elastic regime, stress and strain are directly related through the elastic modulus. However, for cyclic loading that produces plastic strains, the responses are more complex and form a hysteresis loop ( Fig. 14.10 ). From point O up...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060049
EISBN: 978-1-62708-261-7
... of the important types of mechanical properties includes: Hardness, as a measure of resistance to indentation Linear elastic constants that relate to strain under tensile, compressive, and shear loads Yield strength (under tensile, compressive, and shear loads), indicating the stress level required...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000017
EISBN: 978-1-62708-313-3
... of the coherent precipitate in two-phase alloys is strongly influenced both by the elastic strain energy associated with the lattice mismatch between precipitate and matrix and by the interfacial energy of the particle-to-matrix boundary ( Ref 7 ). The elastic strain energy depends on the shape, habit, and volume...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780185
EISBN: 978-1-62708-281-5
...Typical room-temperature mechanical properties of plastics Table 1 Typical room-temperature mechanical properties of plastics Material Tensile strength, MPa (ksi) Elongation, % Modulus of elasticity, GPa (10 6 psi) Compressive strength, MPa (ksi) Modulus of rupture, MPa (ksi...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2015
DOI: 10.31399/asm.tb.spsp2.t54410213
EISBN: 978-1-62708-265-5
... under load is at first elastic. This portion of the stress-strain curve is 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...