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creep crack growth test

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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
... Abstract Predicting the service life of structural components involves creep-fatigue crack growth (CFCG) testing under pure creep conditions. This article provides a discussion on the loading condition and the type of ductile and brittle material showing creep behavior. It focuses...
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Published: 01 January 1996
Fig. 10 Typical installed specimen ready for creep crack growth testing More
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
... Abstract This article describes the concepts for characterizing and predicting elevated-temperature crack growth in structural materials. It discusses both creep and creep-fatigue crack growth and focuses mainly on creep crack growth tests that are carried out in accordance with ASTM E 1457...
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Published: 01 January 1996
Fig. 7 Typical loading waveforms used during creep-fatigue crack growth testing. Source: Ref 66 More
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Published: 01 January 1996
Fig. 12 Creep crack growth rate for chromium-molybdenum steels (tested at 1000 to 1022 °F) compiled from various laboratories. Source: Ref 7 More
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
..., namely, the steady-state creep parameter C ∗, and the transient creep parameter, C t (see previous article) A large quantity of test data revealing the various aspects of high-temperature crack growth behavior Computer models for constant amplitude crack growth at high temperature ( Ref 14...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005411
EISBN: 978-1-62708-196-2
...-similarity in the growth pattern of the creep zone. Figure 8(a) shows the correlation between creep crack growth rate and K for several specimens of 2519 aluminum, showing that a unique correlation does not exist the initial portion of the test during which the creep zone evolves in size and shape...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001477
EISBN: 978-1-62708-173-3
.... Environmentally assisted cracking includes corrosion, stress-corrosion cracking, hydrogen-induced cracking, and other environmentally assisted failure modes. High-temperature creep includes creep rupture and creep crack growth. This article discusses each of these categories, as well as the benefits of a fitness...
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
... in the component. In these cases, most of the life of the component is spent in crack growth. This involves assessment of fracture resistance rather than a strength assessment based on bulk creep rates and time to stress rupture. Therefore, creep life assessment may involve evaluation of both creep strength (i.e...
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
... in crack initiation and growth during the initial stages of creep can make only relatively small differences in total elongation. Thus, replicate tests can exhibit large differences in total elongation but very small differences in true elongation. Fig. 8 Relation of elongation and rupture life...
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
... evaluations, the creep cavitation damage assessment, the oxide-scale-based life prediction, and high-temperature crack growth methods. coating evaluation creep cavitation damage assessment elevated-temperature failure gas turbine blade hardness testing high-temperature crack growth methods life...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006921
EISBN: 978-1-62708-395-9
.... The fracture surfaces of long-term creep SCG failures can exhibit continuous or step-wise incremental crack growth, depending on the material and stress/temperature conditions. Stepwise SCG failures occur by the formation of a craze with a tough membrane at the root of the growing crack. The stress intensity...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002410
EISBN: 978-1-62708-193-1
... are summarized. The article also discusses the effects of microstructure and extrinsic parameters on fatigue crack propagation (FCP). It details the modeling of FCP rates and creep and creep-fatigue crack growth rates. creep creep-fatigue crack growth rate fatigue fatigue crack propagation fracture...
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
...” and “Creep Crack Growth Testing” in this Volume. Microscopic-sized fatigue cracks tend to nucleate quite early in cyclic life (in the first 1–10%) in the high-strain, plasticity-dominated, low-cycle life regime. In this regime, cyclic plasticity is widespread throughout the specimen test section...
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
.... The metal temperature during steady-state operation is approximately 538 °C (1000 °F), which is in the creep regime; therefore, creep-fatigue crack initiation and crack growth are the dominant damage mechanisms. Cracks have been found to occur in casings that have been removed from service after being...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002387
EISBN: 978-1-62708-193-1
... and creepcrack growth. Practical methods based on replication and parametric approaches are also discussed. corrosion damage creep crack growth creep life creep-rupture properties failure prevention FAILURE CONTROL METHODS for piping and process systems encompass the inspection, monitoring, life...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003225
EISBN: 978-1-62708-199-3
... tubes, which have fractured as a result of creep, will often display readily visible surface cracks at locations away from the main fracture. Fig. 9 Macrographs (at 2.5×) and micrographs of AISI Type 1040 carbon steel Gleeble-test samples Service Failures Service failures that occur...
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006940
EISBN: 978-1-62708-395-9
... of the lifetime ( Ref 24 ). The idea of correlating fatigue life under cyclic loading and creep life due to slow crack-growth creep in polymers has been investigated in many research studies ( Ref 25 – 32 ). Kanters et al. ( Ref 27 ) applied this idea to a variety of unfilled and filled thermoplastics...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003546
EISBN: 978-1-62708-180-1
..., creep-fatigue crack initiation and crack growth are the dominant damage mechanisms. Cracks have been found to occur in casings that have been removed from service after being in operation for 25 years or longer ( Ref 12 ). Thus, to ensure the integrity of the casings, it is necessary to inspect them...
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
... to 0.7% C steels 1 , 2 The crack growth can be observed and the data presented as a function of maximum temperature. If the results are to be compared to IF or TMF tests, the stresses and strains should be calculated ( Ref 51 , 55 ) with the finite-element method (FEM) or other numerical...