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isothermal fatigue life

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Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002413
EISBN: 978-1-62708-193-1
... ) is 1s. Source: Ref 34 Abstract This article focuses on the isothermal fatigue of solder materials. It discusses the effect of strain range, frequency, hold time, temperature, and environment on isothermal fatigue life. The article provides information on various isothermal fatigue testing...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001460
EISBN: 978-1-62708-173-3
... and acceptance criteria per MIL-STD-883C Fig. 18 Optical micrographs of 60Sn-40Pb solder on sample surfaces. (a) Wetting. (b) Dewetting. (c) Nonwetting. Source: Sandia National Laboratories Fig. 14 Isothermal fatigue life calculation for thermal fatigue resistance approximation. (a) Package...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006094
EISBN: 978-1-62708-175-7
... J.C. , deBussac A. , and Soniak F. , A Probabilistic Model For Fatigue Life Prediction of PM Ni-Base Superalloys Containing Inclusions , The Int. Conf on Fatigue and Fatigue Thresholds , Vol 3 , U.K. Engineering Material Advisory Services , 1993 99. Huron E.S. and Roth...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003314
EISBN: 978-1-62708-176-4
... load cells extensometry strain measuring devices environmental chambers graphic recorders furnaces heating systems baseline isothermal fatigue testing creep-fatigue interaction thermomechanical fatigue fatigue resistance Fatigue closed loop control advanced software tools fatigue life...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002391
EISBN: 978-1-62708-193-1
... 5 Summary of oxidation-fatigue laws Ref Experiments/mechanism Material Equation 72 , 126 Isothermal in air and vacuum, surface and crack tip oxidation A286 steel Δ ε = A ( N f ) b ν m A,b,m = constants N f = cycles to failure Δε...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006781
EISBN: 978-1-62708-295-2
... damage mechanisms and elucidate mechanism coupling interactions. In addition, life modeling in TMF conditions and a practical application of TMF life prediction are presented. coupling interactions fatigue life prediction thermomechanical fatigue THERMOMECHANICAL FATIGUE (TMF) is the general...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001459
EISBN: 978-1-62708-173-3
... strength. The fatigue life of bulk 60Sn-40Pb solder is shown in Fig. 2 , whereas that of bulk 60Sn-40Pb solder as a function of testing rate is depicted in Fig. 3 . Fig. 2 Isothermal fatigue life (plastic strain dependence) of bulk 60Sn-40Pb solder. Source: Ref 10 Fig. 3 Room...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003545
EISBN: 978-1-62708-180-1
... Some of the key material properties at high temperature are thermal expansion coefficient, stress rupture, elastic modulus, fatigue life, and oxidation resistance. Total strain at temperature is given by the sum of elastic stress-strain modulus, thermal expansion strain, and creep strain...
Series: ASM Handbook
Volume: 4A
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.hb.v04a.a0005788
EISBN: 978-1-62708-165-8
... at different pulsating sinusoidal loads, with a frequency of 16 Hz and a stress ratio, R , of 0. Test results ( 10 ) are plotted as S - N curves, that is, plots of nominal stress amplitude versus fatigue life (number of cycles) to initial cracking. Even though the number of tests was low, it can still...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002415
EISBN: 978-1-62708-193-1
... subjected to fatigue loading Fig. 11 Effect of torque-up on bolted joint fatigue life Fig. 12 Effect of R ratio of an fatigue life Fig. 1 Photomicrographs showing crack patterns under static loading: [0°/90°/±45°] s . (a) 440 MPa or 65 ksi. (b) 483 MPa or 70 ksi Fig...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003399
EISBN: 978-1-62708-195-5
.... , Johnson W.S. , Bahei-El-Din Y.A. , and Castelli M.G. , Analysis of Thermomechanical Fatigue of Unidirectional TMCs , ASTM STP 1156, Stinchcomb W.W. and Ashbaugh N.E. , Ed., ASTM , 1993 , p 591 – 607 29. Johnson W.S. and Mirdamadi M. , “Modeling and Life...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002469
EISBN: 978-1-62708-194-8
..., quenched and tempered. Ultimate engineering strength, S u ; engineering yield strength, S y ; fatigue strength, S ′ f . All other quantities are defined in Eq 15 and 16 . Source: Ref 36 , 37 Fig. 19 Determination of the constants for the fatigue life curve for annealed 4340 steel...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006780
EISBN: 978-1-62708-295-2
... as synonymous with isothermal low-cycle fatigue (LCF) at the maximum temperature of the thermal cycle. Life-prediction techniques also have evolved from the LCF literature. More recently, advances in finite-element analysis ( Ref 24 ) and testing have made it possible to analyze complex thermal cycles...
Series: ASM Handbook
Volume: 4D
Publisher: ASM International
Published: 01 October 2014
DOI: 10.31399/asm.hb.v04d.a0005994
EISBN: 978-1-62708-168-9
... to advancing DHT methods for high-tensile-strength steels. The improvements in toughness, strength, and fatigue life of microalloyed forging steels have evolved from metallurgical improvements in various microstructures, such as ferrite-pearlite, bainite, and w-carbon martensite. As a consequence...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002402
EISBN: 978-1-62708-193-1
... Cr- 1 2 Mo and 1Cr- 1 2 Mo steel. (b) 2 1 4 Cr-1Mo steel Fig. 13 Strain-fatigue curves for 2 1 4 Cr-1Mo steel (class 1) at 425 °C (800 °F) with comparison of strain life at 595 °C (1100 °F). Open points, annealed; solid points, isothermally annealed. R...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003517
EISBN: 978-1-62708-180-1
.... The article discusses metallurgical instabilities of steel-based alloys and nickel-base superalloys. It provides information on several life assessment methods, namely, the life fraction rule, parameter-based assessments, the thermal-mechanical fatigue, coating evaluations, hardness testing, microstructural...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003976
EISBN: 978-1-62708-185-6
... on the fatigue life of En 25 mild steel. Source: Ref 2 Fig. 27 Comparison of wear amounts of surface-treated upsetting tools after 1000 forging cycles with lubricant (Deltaforge-31). Source: Ref 56 Fig. 28 Relative wear rates of nitrided and nonnitrided tool steels used in extrusion...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003975
EISBN: 978-1-62708-185-6
... almost always changes the influence of another, and the effects are not constant throughout the life of the die. Disadvantages of swage dies include the inability to: Redesigning to lower the stresses is probably the best way to minimize fatigue crack initiation and growth. Redesigning may...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.9781627081931
EISBN: 978-1-62708-193-1
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003571
EISBN: 978-1-62708-180-1
... V is the wear volume, L is the normal load, R a is the counterface roughness, S is the ultimate tensile strength of the polymer, ε is the elongation at break, N is the cyclic fatigue life of the polymer, Δε p is the inelastic strain amplitude, and α is a material constant obtained from...