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inelastic strain

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060111
EISBN: 978-1-62708-343-0
... 0.329 0.0007 0.986 Source: Ref 6.9 Fig. 6.33 Inelastic strain-rate partitioning life relationships reported in Ref 7.6 for zero mean stress conditions: René 95, 650 °C (1200 °F). Data from Ref 6.22 and 6.23 (a) PP. (b) PC. (c) CC. (d) CP. Source: Ref 6.6 Fig. 6.34...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060043
EISBN: 978-1-62708-343-0
...Abstract Abstract Strain-range partitioning is a method for assessing the effects of creep fatigue based on inelastic strain paths or strain reversals. The first part of the chapter defines four distinct strain paths that can be used to model any cyclic loading pattern and describes...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060155
EISBN: 978-1-62708-343-0
... investigated. The material is AISI type 304 stainless steel tested in completely reversed torsional strain at 650 °C (1200 °F). Because the specimens were thin-walled tubes, the stresses and inelastic strains were computed linearly from the torque and twist measurements. Hence, there was no need...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060083
EISBN: 978-1-62708-343-0
.... However, if both stress and strain vary simultaneously with time, additional analysis is required to separate, or partition, the inelastic strain into its creep and plasticity components. This is the general condition experienced by materials at critical locations in high-temperature components subjected...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610415
EISBN: 978-1-62708-303-4
... thermomechanical fatigue cannot be predicted based on isothermal fatigue data. Sometimes, the term low-cycle thermal fatigue or low-cycle thermomechanical fatigue is used. Low-cycle fatigue can be identified two ways: high-strain cycling where the inelastic strain range in the cycle exceeds the elastic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060231
EISBN: 978-1-62708-343-0
... Fig. 10.26 Typical turbine blade tip cracking Fig. 10.27 Blade temperature-time profile Fig. 10.28 Inelastic analysis results of stress-strain response at critical locations Fig. 10.29 Comparison of measured and calculated hysteresis loops Fig. 10.15 Fatigue...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060069
EISBN: 978-1-62708-343-0
... as stress changes occur, are not duplicated. These lines presumably cause no damage because no inelastic strain is involved. Actually, the whole construction is idealized; experimental paths should differ to some extent because of oxidation and metallurgical changes associated with various time effects...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060173
EISBN: 978-1-62708-343-0
...</xref> with predictions by various methods Table 8.3 Comparison of experimental cyclic lives for tests in Fig. 8.20 with predictions by various methods 1 2 3 4 5 6 7 8 9 Test actual Strain-range partitioning Frequency separation Hysteresis energy Time- and Cycle-Fraction Rule Damage...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870325
EISBN: 978-1-62708-344-7
... Initiation Crack Propagation Linear Elastic Matrix Behavior Inelastic Matrix Behavior Attention is now directed toward experimentally observed differences between strain-controlled and load-controlled testing of the MMC SCS6/Ti-15-3. The principal concern is for the differences in behavior when...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490111
EISBN: 978-1-62708-340-9
.... Bottom: Design fatigue strain range for Ni-Fe-Cr alloy Incoloy 800 H. Fig. 4.13. Alternative presentation of data where Δσ·Δ∊ p is proportional to hysteresis energy ( Ref 19 ). Fig. 4.36. Design curves from ASME Code Case N-47 for inelastic route for austenitic stainless steels...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060001
EISBN: 978-1-62708-343-0
... there is a minimum temperature above which creep should be considered. Special Aspects of Strain in the Creep Range As emphasized in the companion volume on room-temperature fatigue ( Ref 1.1 ), inelastic strain causes the degradation of a material that eventually results in fatigue crack initiation...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780211
EISBN: 978-1-62708-281-5
..., such as plane-strain fracture toughness/strain energy release rate ( K Ic / G Ic ) methods, has been used for decades as a means of carrying out fracture testing ( Ref 3 , 9 ). However, because of the previously mentioned inelasticity problems, polymers have stress distributions at the tip of a crack...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870157
EISBN: 978-1-62708-344-7
... for years in applications involving long life, the finite life application is of relatively recent origin. Here, both elastic and inelastic strain components are of importance, and the solution of the elastic-plastic equations in simple form presents a challenge. Another reason for interest...
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 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490415
EISBN: 978-1-62708-340-9
... stress 4.0 Fig. 9.45 ... ...      Assumed strain range ... ... 2.0 Fig. 9.46 In-service degradation of:      Base metal 2.0 J 5 to 15 Fig. 9.39      Coating 2.0 J 2 J Inaccuracy of damage rules None J 3 J Stress and thermal gradients in component Unknown...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2005
DOI: 10.31399/asm.tb.faesmch.t51270031
EISBN: 978-1-62708-301-0
... to the peak load. Source: Ref 3 . With kind permission of Springer Science and Business Media Tensile Stress-Strain Behavior Fracture Appearance Transition Temperature (FATT) Fracture Toughness (<italic>K</italic><sub>IC</sub> and <italic>J</italic><sub>IC</sub>) Generally, fracture surfaces...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060223
EISBN: 978-1-62708-343-0
... reasonably close to the isothermal, completely reversed, strain-cycling fatigue results for stand-alone Ti-15-3 material at 425 °C (800 °F). However, since the MMC results are isothermal, the data do not include any effects of cyclic thermal expansion mismatch strains. Elastic and inelastic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870375
EISBN: 978-1-62708-344-7
... Material and condition Approximate room temperature yield strength Operative strengthening mechanism MPa ksi Aluminum alloys Al-Cu-Mg; heat treated and cold worked (2024-T3) 340 50 Strain hardening; precipitation strengthening Al-Zn-Mg-Cu; annealed (7075-0) 100 15 Solution...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.9781627083447
EISBN: 978-1-62708-344-7
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
... related to mechanical properties, it is vital that the general relationships between mechanical properties under certain conditions be thoroughly understood. Mechanical properties are defined as “the properties of a material that reveal its elastic and inelastic (plastic) behavior where force...