1-20 of 48 Search Results for

uncertainty

Sort by
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006803
EISBN: 978-1-62708-329-4
... definitions, how uncertainty is quantified, and input for the associated random variables, as well as the characterization of the response uncertainty. Next, it focuses on specific and generic uncertainty propagation techniques: first- and second-order reliability methods, the response surface method...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003514
EISBN: 978-1-62708-180-1
... Abstract This article describes the historical background, uncertainties in structural parameters, classifications, and application areas of probabilistic analysis. It provides a discussion on the basic definition of random variables, some common distribution functions used in engineering...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.usage.c0048303
EISBN: 978-1-62708-236-5
..., mean, and maximum failure lines. These curves were drawn from published stress-rupture data. The stress-rupture data have a range of values, and the three curves in Fig. 2 reflect the uncertainty in these data. These curves show that for a given stress, when a combination of time and temperature...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006758
EISBN: 978-1-62708-295-2
... The NDE specifications for a part can be different between what is performed during the manufacturing process at piece part level and assembly level and an engineering evaluation during failure analysis. Automated NDE such as UT for weld inspections during manufacturing has less uncertainties than...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001319
EISBN: 978-1-62708-215-0
... for the dished ends was to conform to AISI 304L stainless steel. They were to be manufactured by cold spinning; no stress relieving was specified. Performance of Other Parts in Same or Similar Service There is always an element of uncertainty in the occurrence of this type of transgranular stress...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0046210
EISBN: 978-1-62708-235-8
... was that the oil holes from which the crack did not originate interfered with the solutions for the stress intensity parameter. This approach therefore had an element of uncertainty associated with it, and another approach was used. It can be seen quite clearly in Fig. 3 that the crack had an original...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c9001440
EISBN: 978-1-62708-235-8
... of good quality. Fig. 2 Intergranular cracking adjacent to main crack. (× 100). Fig. 3 Intergranular penetration by molten solder. (× 250). As there was an element of uncertainty as to the nature of the penetrant metal — as molten soft solder and also molten brass from...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001325
EISBN: 978-1-62708-215-0
..., the tensile strength of the 3-in. pipe was on the order of 434 to 455 MPa (63 to 66 ksi), while the tensile strength of the reduction fitting was on the order of 503 to 538 MPa (73 to 78 ksi). Within the uncertainty of the conversion, these values agree with the ASTM A-53 requirement of a minimum tensile...
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
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006753
EISBN: 978-1-62708-295-2
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.aero.c9001560
EISBN: 978-1-62708-217-4
.... Thus, the Tafel slopes quoted in Table 2 are only approximate “best fit” values. This introduced some uncertainty when trying to obtain absolute corrosion rates. Corrosion Rate Data From Electrochemical Testing Table 2 Corrosion Rate Data From Electrochemical Testing Corrosion Rate...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001594
EISBN: 978-1-62708-229-7
... damage accumulates at different rates in the various components. A major factor that contributes to the uncertainty fatigue damage is the uncertainty in the stress intensity factor. Components exposed to cyclic stress that produces stress intensity below the “fatigue threshold” can be expected to last...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006764
EISBN: 978-1-62708-295-2
... position sensors or the use of more than one camera to measure the rotation of a laser diode and to reconstruct the object structure ( Ref 10 ). Although there are a number of uncertainties to be considered with scanners, laser scanners are quite useful as inspection tools, with measurement accuracies...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001738
EISBN: 978-1-62708-220-4
...) yield similar estimates. As indicated above, there is an uncertainty in the estimate for the creep rate, and thus also for the residual life. However, a better estimate could not be made at the moment. The diameter measurements during the next shut-down will give additional information for a more...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006817
EISBN: 978-1-62708-329-4
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001272
EISBN: 978-1-62708-215-0
... scale, and also because, as discussed below, there is some uncertainty as to the chain of events after the ductile crack below the bolt hole was created. If a second initiating event is considered, there is a pre-existing crack (first ductile crack plus the bolt hole diameter) that is about 25 mm (1...
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
Series: ASM Handbook
Volume: 11B
Publisher: ASM International
Published: 15 May 2022
DOI: 10.31399/asm.hb.v11B.a0006909
EISBN: 978-1-62708-395-9
... the service life that must be achieved (or predicted) and the level of uncertainty in life expectancy that is acceptable. (Note: It is quicker and more cost-effective to determine if a product can achieve a specified service life than to determine the service life of the material or product.) Identify...
Series: ASM Handbook
Volume: 11A
Publisher: ASM International
Published: 30 August 2021
DOI: 10.31399/asm.hb.v11A.a0006823
EISBN: 978-1-62708-329-4
...,” assuming groovelike damage; and a Part 9, “Assessment of Crack-Like Flaws,” in which the damage is treated as cracklike flaws due to the decreasing width in their longitudinal direction and the uncertainty of the actual width at the deepest material-loss locations. A Level 1 assessment is suitable...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003504
EISBN: 978-1-62708-180-1