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high temperature life assessment

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Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006462
EISBN: 978-1-62708-190-0
... detected with high confidence? Historically, NDT searched for defects that were “manufactured into” a component. However, advances in the understanding of fatigue crack initiation and in the maturation of fracture mechanics evolved structural design philosophy from “safe-life” to “damage tolerant...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006455
EISBN: 978-1-62708-190-0
..., and for a density of 1.0, only one-tenth of the incident light intensity is transmitted. The fact that only 1 100 of the incident light is transmitted at a density of 2.0 is the reason that it is necessary to use high-intensity illuminators for viewing industrial radiographs at densities...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006787
EISBN: 978-1-62708-295-2
... in the hot sections of aero gas turbine blades to improve creep strength and prolong blade life from creep damage. High-temperature corrosion at aero-operating temperatures does not occur often, but ingestion of sea salt in naval aircraft can result in pitting and molten-salt corrosion and can...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006463
EISBN: 978-1-62708-190-0
... bounds. Using binomial statistics to demonstrate high POD numbers requires many tests. Twenty-nine successes out of 29 trials are required to say one has 95% confidence that the POD is at least 90% at the crack size in question. Many more trials are required to increase this. 90/95 was consistent with...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003113
EISBN: 978-1-62708-199-3
... obtained. Minimum and typical mechanical property values for 95 and 96% dense MIM low-alloy steels are given in Table 7 . As these data indicate, ductility of MIM-processed parts is very high, with elongation values of 30% or higher. Figure 4 (a), a photomicrograph of an unetched specimen of low...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006016
EISBN: 978-1-62708-172-6
... then discarded, because the breakdown rate is relatively high. Conversely, the breakdown rate of recyclable abrasives is relatively low, allowing them to be used multiple times before they are discarded. The SSPC abrasive specification No. 1 (SSPC-AB 1), “Mineral and Slag Abrasives,” defines the...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005412
EISBN: 978-1-62708-196-2
... (<0.1), Ag/MgO (<0.1), Ag/NaCl (0.02), Random twist angle at high temperatures All LEORs are surface type Au/NaCl (0.02), Au/LiF (0.01) (a) Characteristic features, type of low-energy orientation relationships (LEORs), degree of localization of misfit dislocations. Source: Ref...
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
... associated failures of materials used in high-temperature applications. The complex effects of creep-fatigue interaction are also discussed, although more detail on this is described in the article “Thermomechanical Fatigue: Mechanisms and Practical Life Analysis” in this Volume. Life assessment is also...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006779
EISBN: 978-1-62708-295-2
...-static, finite-life, and infinite-life regimes ( Fig. 3 ). Fig. 3 S - N curve for cruciform metal-active-gas-welded joints (structural steel S355, ASTM A572 grade 5). LCF, low-cycle fatigue; HCF, high-cycle fatigue; P F , probability of failure Failure in S - N testing is typically...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005405
EISBN: 978-1-62708-196-2
... Abstract The purposes and methods of fatigue modeling and simulation in high-cycle fatigue (HCF) regime are to design either failsafe components or components with a finite life and to quantify remaining life of components with pre-existing cracks using fracture mechanics, with the intent of...
Book Chapter

Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003088
EISBN: 978-1-62708-199-3
... more important than the probability of occurrence. This truly represents society's value system to a great degree. Activities capable of producing catastrophic accidents, therefore, are seen as a great risk and must be more stringently controlled than high-frequency individual risks. The two...
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
... they can be interfaced with constitutive and crack initiation models to significantly impact the ability to predict component behavior during service and in the design of better materials. Fig. 1 Methodology for assessing integrity of structural components that operate at high temperatures. TMF...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003224
EISBN: 978-1-62708-199-3
... treating Welding Triaxiality High transition temperature Precipitation and phase phenomena Nondestructive examination covers a wide variety of tests; a distinguishable characteristic is that parts are not affected or altered in any way, although superficial cleaning could occur...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003988
EISBN: 978-1-62708-185-6
... oxidation during the atomization process. In addition, during subsequent powder processing, high temperatures are required to reduce the oxides of chromium and manganese, and special care must be taken to prevent reoxidation during handling and forging. If the elements become oxidized, they do not...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006765
EISBN: 978-1-62708-295-2
... martensite, because the temperature in this region was high enough to reaustenitize the structure. The dark-etching zone beneath it was subjected to temperatures below the lower critical but greater than the original tempering temperature due to frictional heating during cutting. Fig. 1 Light...
Series: ASM Handbook
Volume: 5B
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v05b.a0006072
EISBN: 978-1-62708-172-6
..., Pittsburgh, PA. Courtesy of KTA-Tator, Inc. These bridges are generally signature structures with tall towers from which high-strength steel cables support the bridge deck. Cable-stayed superstructures have taken many forms around the world ( Fig. 5 ). Concrete cable stays have used concrete edge...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005676
EISBN: 978-1-62708-198-6
..., such as high-performance polymers for implants, tissue engineering, and bioresorbable polymers. bioresorbable polymers failure analysis high-performance polymers implants medical applications medical devices medical polymer selection medical polymers polymerization product life cycle...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006447
EISBN: 978-1-62708-190-0
... direct VI. The final image is of very high quality using these instruments, because they incorporate all the features of a contemporary camera plus appropriate software for further image processing. All standards covering VI recommend that the surface under examination should be free from paint, debris...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 November 1995
DOI: 10.31399/asm.hb.emde.a0003022
EISBN: 978-1-62708-200-6
... (a) Recommended thermal cycling temperature limits High Low °C °F °C °F SC 5 (extended very severe) Conditions that include likely damage from denting, scratching, and abrasive wear in addition to exposure to corrosive environments where long-term protection of the substrate is...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006788
EISBN: 978-1-62708-295-2
... systems where temperatures are high. Fig. 9 Friction factors for flow through test lines under biocide treatment in an oilfield produced-water system indicate the extent of biofouling. In this case, biocide A loses control of microbial fouling after 60 days relative to biocide B. Fig. 10...