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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870075
EISBN: 978-1-62708-344-7
...Abstract Abstract This chapter discusses the concept of mean stress and explains how it is used in fatigue analysis and design. It begins by examining the stress-strain response of test samples subjected to cyclic forces and strains, noting important features and what they reveal about...
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
.... Source: Ref 2 Fig. 8 Endurance limit versus hardness for steels. Source: Ref 7 Fig. 11 Effect of mean stress on fatigue life. Source: Ref 5 Fig. 12 Comparison of Goodman, Gerber, and Soderberg relationships. Source: Ref 2 Fig. 15 Hysteresis loop for cyclic...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870267
EISBN: 978-1-62708-344-7
... Design Fig. 11.34 The effect of various machining processes on the bending fatigue strength of Ti-5Al-2.5Sn alloy. Source: Ref 11.40 Fig. 11.35 Effect of surface conditions on fatigue properties of nickel-base alloy Inconel 718, cantilever bending, zero mean stress, 24 °C (75 °F...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870325
EISBN: 978-1-62708-344-7
... Morrow, original Morrow, and Modified Goodman correlation of mean stress results for SCS6/Ti-15-3 MMC at 427 °C (800 °F). The dashed line represents all three models, while the solid line is the best curve fit to the data. Source: Ref 12.29 Fig. 12.57 Correlation of mean stress results...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060231
EISBN: 978-1-62708-343-0
... curve for directionally solidified Mar-M 246 Fig. 10.16 Mean stress diagram for directionally solidified Mar-M 246 Fig. 10.12 Injector nozzle element in a fuel preburner assembly showing location of the initiation and propagation of high-cycle fatigue cracks at the critical radius...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.9781627083447
EISBN: 978-1-62708-344-7
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 December 2003
DOI: 10.31399/asm.tb.cfap.t69780238
EISBN: 978-1-62708-281-5
... sensitive to the testing environment than metal or ceramic counterparts. These variables include the stress or strain amplitude of the loading cycle; the mean stress of the cycle; the presence of stress concentrations or initial defects in the component; the frequency, temperature, and environment...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540121
EISBN: 978-1-62708-309-6
... hysteresis loop based on strain-controlled, complete reverse loading with mean strain equal to zero Depending on the initial condition of an alloy, the maximum stress at each loop may decrease, instead of increase, with repeated straining. Thus, it is called “cyclic softening.” If a metal is initially...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870009
EISBN: 978-1-62708-344-7
... for controlling stress, strain, or any combination of parameters, so as to give special meaning to the control variables. In this chapter, we concentrate our discussion of material behavior under uniaxial stress and strain cycling. The novice reader is advised to skim the section “Complex Pattern of Strain...
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
... in the literature is for fully reversed bending with no mean stress applied on top of it. Another common stress cycle is the repeated stress cycle, in which there is a mean stress (σ m ) applied on top of the maximum and minimum stresses. The middle graph in Fig. 14.1 shows the condition where both stresses...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870123
EISBN: 978-1-62708-344-7
... them, level crossings and range pairing. In recent years it has become recognized that an “event” can best be defined as a closed hysteresis loop. Thus, the “event” identifies both the strain range and the mean stress that are the fundamental parameters required to establish the cyclic life...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870105
EISBN: 978-1-62708-344-7
... Predictions under the Influence of Mean Stresses , J. Eng. Mater. Technol. (Trans. ASME) , Vol 110 , 1988 , p 380 – 388 10.1115/1.3226066 5.32 Kallmeyer A.R. Krgo A. and Kurath P. , Evaluation of Multiaxial Fatigue Life Prediction Methodologies for Ti-6Al-4V , J. Eng. Mater...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060173
EISBN: 978-1-62708-343-0
..., SRP 8.133 Ig DNE-SRP Ductility-normalized equations, SRP 8.22 Ih SRC-SRP Strain-Range Conversion Principle, SRP 8.134 , 8.135 Ii MSE-SRP Mean stress effects, SRP 8.27 Ij CEP-SRP Combustion engineering model, SRP 8.136 Ik TSV-SRP Total strain version of SRP...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870179
EISBN: 978-1-62708-344-7
... concentration factor K t . If this were done, the stress/strain condition at the root would no longer lie on the stress-strain curve. In Chapter 4, “Mean Stress,” it is emphasized that the stress-strain curve must not be violated, otherwise errors will occur. It becomes necessary to develop an approach...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610263
EISBN: 978-1-62708-303-4
... Effect of Mean Stress Studs Mechanically Fastened Joints Threaded Fasteners in Tension Bolts and Rivets in Bearing and Shear Fatigue in Welded Joints Methods for Improving the Fatigue Life of Welded Joints Fracture Control in Welded Structures Factors Affecting Fracture Toughness...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870201
EISBN: 978-1-62708-344-7
... often used today, there are many modifications required based on later findings. These modifications are discussed next. Consideration of the Broad Spectrum of Stress-Intensity Factor Material Dependence of Exponent <italic>n</italic> Mean Stress-Intensity Effects Alternate Graphical...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870001
EISBN: 978-1-62708-344-7
.... This chapter also discusses high-cycle fatigue, which can occur when loading is applied at moderate frequency over a long lifetime of the structure, or at extremely high frequency for shorter-lifetime structures, even if the applied strain is in the nominally elastic range. Mean stress is discussed...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540297
EISBN: 978-1-62708-309-6
..., mechanical factors (applied stress, R -ratio, notch geometries) and thermal factors both contribute to the outcome of a test. Fig. 7.13 Temperature increase resulting from uniaxial cycling at 5 Hz with load control, sine wave, and zero mean stress in polyacetal. U, unbroken; F, fracture. The applied...
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
... at 540 °C (1000 °F) ( Ref 212 ). Fig. 4.2. Graphical methods for presenting the combined effects of alternating stress and mean stress on fatigue life ( Ref 3 ). (a) Goodman diagram. (b) Modified Goodman diagram. Fig. 4.3. Effect of temperature on S-N curves for Inconel 625 ( Ref 4...