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sustained-load crack growth rate

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Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002397
EISBN: 978-1-62708-193-1
... Abstract This article summarizes the metallurgy of carbon and alloy steels, followed by discussions on their major mechanical properties, namely, static fracture toughness, dynamic fracture toughness, fatigue or sustained-load crack growth rates, and fatigue or sustained-load thresholds...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002361
EISBN: 978-1-62708-193-1
... Crack growth rate response from changes in cyclic load frequency. Source: Ref 6 Fig. 6 Influence of frequency on fatigue crack growth in a Ti-6Al-4V alloy exposed to 0.6 M NaCl solution at room temperature and R = 0.1. Source: Ref 7 Fig. 8 Effect of grain size on the fatigue...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002417
EISBN: 978-1-62708-193-1
... with that of similar-strength steel and aluminum alloys. Source: Ref 17 , 18 Fig. 9 Subcritical crack growth behavior in MgO-PSZ showing a comparison of cyclic crack velocities, da / dt , from the present study with sustained-load cracking data of Becher for 55% relative humidity air and distilled water...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002390
EISBN: 978-1-62708-193-1
... 718 in particular, has shown that sustained load creep crack growth rate data can be used to predict cyclic crack growth in the time-dependent regime ( Ref 43 , 44 ). In those regions in which the cycle-dependent and the time-dependent phenomena are both present, implementation of a semiempirical...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003318
EISBN: 978-1-62708-176-4
... on the tacit assumption that structural components are intrinsically flawed and capable of sustaining a considerable amount of stable crack growth before failure. The fatigue life of a component based on this defect-tolerant approach is dictated by the number of loading cycles needed to propagate a crack...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003667
EISBN: 978-1-62708-182-5
... before plating is advised. If the coupon is stress free but the parts have a high residual stress, the coupons will pass the 200 h sustained-load test, but the parts, which might have cracked during plating, may inadvertently be put into service, or vice- versa. To prevent misrepresentation, hardware...
Series: ASM Handbook
Volume: 2B
Publisher: ASM International
Published: 15 June 2019
DOI: 10.31399/asm.hb.v02b.a0006545
EISBN: 978-1-62708-210-5
... the intergranular SCC verified in all other materials. Source: Ref 26 Fig. 6 Examples of stress-corrosion cracking (SCC) crack growth in various aluminum alloys with relatively high resistance to SCC. Short-longitudinal double-beam specimens bolt-loaded to pop-in and wetted with 3.5% sodium chloride...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002381
EISBN: 978-1-62708-193-1
... to an unforeseen overload on the undamaged structure. Fractures are usually the end result of crack growth from a small defect or flaw. Due to repeated or sustained “normal” service loads, a crack may develop (starting from a flaw or stress concentration) and slowly grow in size. Cracks and defects impair...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003706
EISBN: 978-1-62708-182-5
... discontinuity states to provide an initial starting condition. Important data include industry strain/ stress crack initiation test data, surface topography, local and global deflections and loads, crack growth rate data, corrosion rate data, related experimental test data, field aircraft findings...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003666
EISBN: 978-1-62708-182-5
... in the initial load ( Ref 6 , 7 ). Such trends in changing stress during crack growth are shown in Fig. 4 . Fig. 4 Comparison of changing stress during initiation and growth of isolated SCC in constant-strain and constant-load tests of a uniaxially loaded tension specimen. (a) Constant-strain test. (b...
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
.... The article concludes with case studies of fatigue life assessment from the aerospace industry. aerospace industry aluminum crack growth software damage-tolerance approach fatigue crack growth fatigue-life assessment fracture mechanics retardation spectrum load steel stress spectrum stress...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002362
EISBN: 978-1-62708-193-1
...-amplitude loading) Load interactions in variable-amplitude loading State of stress Residual stress Crack size and shape, and their relation to component size and geometry Fig. 4 General interrelationships associated with environmentally assisted cracking, which can encompass crack growth rates...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003225
EISBN: 978-1-62708-199-3
... rates Ruptures occur after long exposure times Verify proper alloy (a) Failure at the time of load application without prior weakening. Fractographers often refer to “overload fracture” as a way to distinguish a failure from fatigue and stress-corrosion crack growth. However, a true...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003225
EISBN: 978-1-62708-199-3
..., elastic or plastic distortion, and fracture. Many elements of fracture have been used to describe and categorize the types of fractures encountered in the laboratory and in service. These elements include loading conditions, rate of crack growth, and macroscopic and microscopic appearance...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003243
EISBN: 978-1-62708-199-3
... damage have been classified further in terms of crack nucleation, crack growth rates, and threshold stress-intensity measurements. Testing Methods As described in the section “Tests for Stress-Corrosion Cracking” in this article, the cantilever beam test and the wedge-opening load test result...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003243
EISBN: 978-1-62708-199-3
...-intensity behavior of modified wedge-opening load, cantilever beam, and contoured double-cantilever beam test specimens The contoured double-cantilever beam test is used to measure crack growth rate a constant stress-intensity factor. This test simplifies the calculation of stress intensity by using...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002392
EISBN: 978-1-62708-193-1
... fastener load Fig. 1 Typical probability-stress-life-plot Fig. 2 Plot of the Soderberg relationship Fig. 3 Crack growth data for 2024-T3 aluminum. 2024-T3 Al, 0.090 in. sheet, L-T direction, 70 °F, lab air; frequency, 0.3 to 20 Hz; CC specimens, 0.090 in. thick, 12.0 in. wide...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003500
EISBN: 978-1-62708-180-1
... ), such as a pump shaft fracture that causes the impeller to seize or a loss of load-carrying capability of a structural bolt in-service due to fracture. A logical failure analysis approach first requires a clear understanding of the failure definition and the distinction between an indicator (i.e., symptom...
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
... , Vol 13 , p 9 – 14 12. “Standard Test Method for Constant-Load-Amplitude Fatigue Crack Growth Rates Above 10 −8 M/cycle,” ASTM E 647-81 13. Walker E.K. , “The Effect of Stress Ratio during Crack Propagation and Fatigue for 2024-T3 and 7075-T6,” The Effects of Environment...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006784
EISBN: 978-1-62708-295-2
... with hydrogen formation. Current mechanisms of corrosion-assisted, sustained-load cracking are variations of two basic theories: crack advance by anodic dissolution or hydrogen embrittlement. The controlling factors in these two are: Fig. 3 Potential ranges of environmentally assisted cracking by (I...