1-20 of 315 Search Results for

sustained-load crack growth rate

Follow your search
Access your saved searches in your account

Would you like to receive an alert when new items match your search?
Close Modal
Sort by
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
... if the size of the ripple is smaller than 5% of the sustained load. Fig. 13 Rippled-load cracking of AISI 4340 steel in a 3.5% NaCl solution. Source: Ref 11 Effect of Waveform While cyclic load waveform has little effect on the fatigue crack growth rates in benign environments, available...
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
... ). For a given material and temperature combination, the transition frequency is a function of R. The frequency range at which the crack growth rates remain time dependent increases as R increases ( Ref 42 ). The limiting case is R approaching unity. It is equivalent to crack growth under sustained load...
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
... that it was previously held that there are no cyclic fatigue effects in ceramics. However, cyclic loads do have a real effect on the fracture resistance of ceramics. A comparison of the rates of fatigue crack growth measured under cyclic loads with rates of stress-corrosion cracking measured under sustained loads...
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
... 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 of an initial size to a critical dimension. Fracture...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006918
EISBN: 978-1-62708-395-9
... mechanics for fatigue design is based on the tacit assumption that structural components are intrinsically flawed and capable of sustaining stable crack growth before failure. The fatigue life of a component based on the defect-tolerant approach is dictated by the number of loading cycles needed...
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
... test slow strain rate tensile test stress wedge-opening load test HYDROGEN EMBRITTLEMENT of metals is an old, frequently encountered, and often misunderstood phenomenon. It is most commonly thought to occur by subcritical crack growth, often producing time-delayed fractures in production parts...
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
... crack to initiate and to subsequently grow large enough to produce failure. In crack propagation testing, fracture mechanics methods are used to determine the crack growth rates of preexisting cracks under cyclic loading. Both methods can be used in a benign environment, or by the combined effects...
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
... 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 the strength of the component. Thus, during the continuing development...
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
... steels and alloys and how to interpret test results. constant-load testing constant-strain testing slow-strain-rate tension testing stress corrosion cracking stress corrosion testing THERE ARE A NUMBER of corrosion-related causes of the premature fracture of structural components. The most...
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
... be found in the article “Evaluating Stress-Corrosion Cracking” in Corrosion: Fundamentals, Testing, and Protection, Volume 13A of ASM Handbook , 2003 ( Ref 23 ). Statically Loaded Smooth Samples Despite the introduction of fracture mechanics techniques capable of determining crack growth rates...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002389
EISBN: 978-1-62708-193-1
... ] + V ˙ c The term on the left side of Eq 34 is the total load-line deflection rate at constant load, while the first two terms on the right side are the deflection rates due to crack growth as a result of elastic and plastic compliance change, and the third term is due to creep...
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...
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
... 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 in a parameter called K ISCC , which...
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
... on crack growth rates under cyclic load. The article examines corrosion-fatigue cracking along with the effects of cracking due to stress corrosion and hydrogen embrittlement, which often occur together. It explains how test parameters such as loading and environmental conditions impact crack growth...
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
... are: Define aircraft utilization Develop load factor spectra at the aircraft center of gravity Select critical locations for evaluation Develop stress spectra for each location Establish the environment for each location Develop crack growth rate ( da / dN ) data for each location Validate...
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: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003307
EISBN: 978-1-62708-176-4
... description of the experimental test method for creep crack growth tests using a compact specimen geometry, under cyclic or static loading, is in agreement with the ASTM E 1457 “Standard Test Method for Measurement of Creep Crack Growth Rates in Metals” ( Ref 23 ). The aforementioned technique entails...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003633
EISBN: 978-1-62708-182-5
... on statically loaded precracked samples usually are conducted with either a constant applied load or with a fixed crack opening displacement, and the actual rate or velocity of crack propagation, da/dt , is measured ( Ref 9 ). The magnitude of the stress distribution at the crack tip (the mechanical driving...
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
..., or damage tolerance methods which arrive at a reasonable inspection interval to ensure component safety. This latter method is based upon the growth rate of cracks assumed to exist in the component as a result of fatigue, accidental damage, or material and manufacturing defects. The effect of corrosion...