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life cycle analysis

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870045
EISBN: 978-1-62708-344-7
.... It also discusses high-cycle, low-cycle, and ultra-high cycle fatigue and presents several models that are useful for fatigue life predictions. fatigue design fatigue life analysis high-cycle fatigue S-N curve Introduction The Strain-Based Approach to Fatigue Analysis Predictive Methods...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.tb.aacppa.t51140001
EISBN: 978-1-62708-335-5
... pollution and the costs of environmental control, and lowering material cost through recycling. When factored into cost comparisons with competing materials, the advantage of aluminum in life-cycle analysis can be significant. ...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870123
EISBN: 978-1-62708-344-7
... G.R. Ed., ASME , 1994 , p 49 – 56 6.23 Smith R.W. Hirschberg M.H. and Manson S.S. , “Fatigue Behavior of Materials under Strain Cycling in Low and Intermediate Life Range,” NASA TN D-1574, April 1963. See also Proceedings, Tenth Sagamore Army Materials Research...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060231
EISBN: 978-1-62708-343-0
... of the substantial cyclic inelasticity sustained during each thermal cycle, it was appropriate to apply the SRP life prediction method based on the original inelastic strain version ( Ref 10.14 ), as discussed in Chapters 3 and 4 of this book. Hysteresis loop analysis indicated that the inelastic strain...
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
... because all of the mean stress data were in the nominally elastic, high-cycle fatigue regime wherein the degree of plasticity was of no consequence to an engineering analysis of fatigue life. Without the presence of mean stress, the elastic line intersects the vertical axis (2 N f = 1) at the point...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540383
EISBN: 978-1-62708-309-6
...-perflight peak-to-peak GAG cycle. Of these, the peak-to-peak GAG is generally used; it provides the best correlation between spectrum fatigue testing conducted on notched coupons and fatigue analysis. Depending on use, more than one type of GAG cycle may occur during the operational life of a given vehicle...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060111
EISBN: 978-1-62708-343-0
... in this chapter, the analysis is simplified considerably by assuming that these lines are parallel to the elastic line for PP cycling. First, it must be understood why determination of the elastic line (and the inelastic line) is important. Once the inelastic and elastic lines of strain range versus life...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060173
EISBN: 978-1-62708-343-0
... damage 8.83 A TCF Time- + Cycle-Fraction Rule 8.35 A LFA Life fraction approach 8.75 AD TPR 10% Rule 8.12 ABD LCD Linear creep damage for therma1 fatigue 8.84 ABD MLF Modified-Life Fraction Rule 8.26 ABD LFR Life Fraction Rule 8.85 ABD TCD Turbine...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060155
EISBN: 978-1-62708-343-0
... agreement with the observed life of 60 cycles reported by Zamrik. The earlier analysis was then applied to his remaining tests. Another set of life predictions were made as well. The analysis used the PP life relationship for AISI type 304 stainless steel generated by Weeks ( Ref 7.18 ) at 650 °C (1200 °F...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540121
EISBN: 978-1-62708-309-6
... studied the nature and mechanisms of fatigue, and engineering analysis procedures have been established and periodically updated. The engineering approach has been to experimentally determine the fatigue life (in terms of number of load cycles to failure) at a selected stress level, or to determine...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1989
DOI: 10.31399/asm.tb.dmlahtc.t60490265
EISBN: 978-1-62708-340-9
... of loading and unloading cycles. Fig. 6.13. Cyclic life-expenditure (CLE) curves ( Ref 22 and 23 ). Shaded regions of curves represent bore-stress limits and define regions which should not be entered during temperature increases. The curves in Fig. 6.13 represent the percent life expended...
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
... ( Ref 4 ). High-cycle fatigue properties of extrafine-grain and conventional material tested at 850 °C (1560 °F), showing the effect of grain size. Fig. 4.11. Monotonic and cyclic stress-strain curves for several engineering alloys ( Ref 14 ). Fig. 4.12. Fatigue life as a function...
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
... fatigue. Finally, the chapter discusses a number of design philosophies or methodologies to deal with design against fatigue failures. fatigue high-cycle fatigue low-cycle fatigue fatigue crack propagation fatigue crack nucleation fatigue crack growth fatigue life stress concentration...
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 February 2005
DOI: 10.31399/asm.tb.chffa.t51040295
EISBN: 978-1-62708-300-3
... the number of cycles until fatigue fracture. Fig. 22.10 Fatigue analysis method [ Knoerr et al., 1994 ] If the predicted tool life is insufficient, changes in the process and tooling design must be made in order to reduce the loading conditions. A significant increase in tool life can...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2006
DOI: 10.31399/asm.tb.fdsm.t69870009
EISBN: 978-1-62708-344-7
...Abstract Abstract This chapter provides a detailed analysis of the cyclic stress-strain behavior of materials under uniaxial stress and strain cycling. It first considers the case of a stable material under constant-amplitude strain cycling then broadens the discussion to materials that harden...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.fdmht.t52060043
EISBN: 978-1-62708-343-0
... the microstructural damages associated with each of the four basic loading cycles. The discussion then turns to fatigue life prediction for different types of materials and more realistic loading conditions, particularly those in which hysteresis loops have more than one strain-range component. To that end...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2012
DOI: 10.31399/asm.tb.ffub.t53610001
EISBN: 978-1-62708-303-4
... equipment that is exposed to elevated temperatures, life-limiting factors involve pressure, temperature, environment, fatigue cycles, and time at temperature. The following life-limiting factors are common to most structures and should be considered in a failure analysis and a life assessment...
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
... Histograms showing fatigue-life distribution for 57 specimens of a 75S-T6 aluminum alloy tested at 207 MPa (30 ksi). Note the influence of a (a) linear or (b) logarithmic plot of cycles to failure N on the shape of the histogram. Source: Ref 9 Fig. 14 Schematic showing the fatigue curve...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.mmfi.t69540379
EISBN: 978-1-62708-309-6
... and strain ranges for each arbitrary element along the potential crack path can therefore be determined using an appropriate stress analysis based on the theory of elasticity. The total life of each element can be calculated from the fatigue properties (i.e., strain amplitude/cycles to failure curve...