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finite-endurance range

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Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002370
EISBN: 978-1-62708-193-1
... of the (technological) range of the transition region; m is a multiplicating factor to apply on 10 and gives n, the number of specimens needed in one level ( m = 2, n = 20). Fig. 8 Evaluation of the levels of alternating load 220, 250, and 295 MPa in the range of the finite endurance. The level 200 MPa...
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
...—high-cycle fatigue and low-cycle fatigue. High-cycle fatigue involves nominally linear elastic behavior and causes failure after more than approximately 100,000 cycles. As the loading amplitude is decreased, the cycles-to-failure increase. For many alloys, a fatigue (endurance) limit exists beyond...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003257
EISBN: 978-1-62708-176-4
... hardness Table 6 Multiplying factors for obtaining tensile strength from hardness Material Multiplying factor range (a) Heat treated carbon and alloy steel 470–515 HB Annealed carbon steel 515–560 HB All steels 448–515 HV Ni-Cr austenitic steels 448–482 HV Steel; sheet...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003516
EISBN: 978-1-62708-180-1
... and Endurance Limit Variable-Amplitude Loading and Cumulative Damage Stress Concentration and Fatigue Notch Factor Stress-Intensity Factor and Fracture Toughness Beta Factor and Crack Geometry Increased awareness of the effects of load interaction has demonstrated the importance of defining...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002371
EISBN: 978-1-62708-193-1
... behavior after the inherent strength of the material itself is considered. The residual stress effect is most pronounced in the endurance limit regime (10 7 cycles), although significant effects of residual stress can be seen in the higher stress ranges (low-cycle fatigue region), which yield lives...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006344
EISBN: 978-1-62708-179-5
... strength, MPa (ksi) 169.7 (24.6) 169.7 (24.6) 177.9 (25.8) 177.9 (25.8) Endurance ratio 0.38 0.39 0.39 0.34 Tensile strength, MPa (ksi) 449.7 (65.2) 440.7 (63.9) 454.5 (65.9) 524.1 (76.0) Hardness, HB 312 343 283 331 Chemical analysis, %  Total carbon 3.09 3.08 2.93 2.91...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002396
EISBN: 978-1-62708-193-1
... at these strain levels; in fact, the data points fall on extrapolations of the finite-life strain curves. This behavior suggests that endurance limits will be lowered, if not eliminated, under spectrum loading conditions. As further evidence of the influence of strain regime on failure mode, fatigue crack...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002369
EISBN: 978-1-62708-193-1
... on the phenomenon of endurance limit in steels. The statistical problem is then reduced to simply comparing a single load level with a single strength number, the endurance limit. Figure 1 schematically illustrates the problem of determining the acceptable distance between the average loading and the average...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003313
EISBN: 978-1-62708-176-4
.... The Goodman line represents an unconnected 10 6 estimate at 50% failure (criterion: separation). Fig. 3 A constant-life diagram for alloy steels that provides combined axes for more ready interpretation. Note the presence of safe-life, finite-life lines on this plot. This diagram is for average...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002400
EISBN: 978-1-62708-193-1
... and Surface '92 , Japan Technical Information Service , Tokyo , 1992 , p 409 – 412 Bending fatigue performance of carburized steels can vary significantly. One study reported values of experimentally measured endurance limits ranging from 200 to 1930 MPa (29 to 280 ksi), with most values between...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003315
EISBN: 978-1-62708-176-4
...Strain rate as a function of test frequency and strain range Table 1 Strain rate as a function of test frequency and strain range Frequency, Hz Strain rate ( ε ˙ ), s −1 , at strain (ε) of: ε = 10 −5 , m/m ε = 10 −4 , m/m ε = 10 −3 , m/m ε = 10 −2 , m/m 10 10 −4 10...
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006549
EISBN: 978-1-62708-210-5
... at the notch root and in the smooth test specimen when both are subjected to identical stress-strain histories. When the part is loaded beyond the elastic limit and significant plastic strains are produced, the fatigue life is reduced (to a finite number of cycles) and the mode of failure is described as low...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002399
EISBN: 978-1-62708-193-1
...Typical fatigue endurance of cast irons Table 1 Typical fatigue endurance of cast irons Class or type Ultimate tensile strength (a) , ksi Hardness, HB Fatigue endurance strength (b) Unnotched, ksi Notched, ksi Gray cast irons Medium section (type 20) 20–25 140–187...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003321
EISBN: 978-1-62708-176-4
... of representation can be used to create an S - N curve for any level of mean stress. Note the presence of safe-life, finite-life lines on this plot. This plot. This diagram is for average test data for axial loading of polished specimens of AISI 4340 steel (ultimate tensile strength, UTS, 125 to 180 ksi...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002395
EISBN: 978-1-62708-193-1
... transition curve comes at the nil-ductility transition temperature determined by the drop-weight test. Corrosion fatigue crack initiation in notched specimens is most effectively characterized by the notch-root plastic strain range calculated by Neuber's method, elastic-plastic finite elements...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002350
EISBN: 978-1-62708-193-1
..., finite-life lines on this spot. This diagram is for average test data for axial loading of polished specimens of AISI 4340 steel (ultimate tensile strength, UTS, 125 to 180 ksi) and is applicable to other steels (e.g., AISI 2330,4130, 8630). Source: Ref 20 Fig. 6 Best-fit S / N curves...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003544
EISBN: 978-1-62708-180-1
... Behavior in region 2 is relevant to design situations involving a finite number of fatigue cycles. Extensive fatigue-crack-growth-rate data for various steels show that the primary parameter affecting growth rate in region 2 is the stress-intensity factor range, and that the mechanical and metallurgical...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002393
EISBN: 978-1-62708-193-1
... Fig. 1 Crack growth and residual strength evaluation for each principal structural element Fig. 2 Effect of stress range truncation on crack growth life. Source: Ref 9 . These data were included in Ref 9 by permission of the DeHavilland Aircraft Co. of Canada. Fig. 3...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003668
EISBN: 978-1-62708-182-5
... Fig. 1 Venn diagram illustrating the interrelationship among stress corrosion, corrosion fatigue, and hydrogen embrittlement. R , ratio of minimum stress to maximum stress. Source: Ref 1 Fig. 8 Corrosion-fatigue endurance data for specimens of 13% Cr steel. Rotating bending tested (mean...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002364
EISBN: 978-1-62708-193-1
...Ranges in monotonic stress-strain properties of metals Table 1 Ranges in monotonic stress-strain properties of metals Monotonic property Typical range of engineering metals Modulus of elasticity, E , ksi 10 to 80 × 10 3 Tensile yield strength, S 0.2%y , ksi 1 to 3 × 10 2...