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uncertainty reduction

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Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005534
EISBN: 978-1-62708-197-9
... Abstract This article presents an approach to manage the uncertainty present in materials design. It describes inductive and deductive approaches to deal with uncertainty. The article focuses on providing an understanding of the opportunities for managing uncertainty and the decisions...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006634
EISBN: 978-1-62708-213-6
... the parent population material and statistically isolating the uncertainty thus introduced by analysis of variance. Sampling uncertainty is often minimized by field and laboratory processing, with procedures that can include mixing, reduction, coning, quartering, riffling, milling, and grinding. Another...
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
... (estimating a probability of an adverse event occurring) and uncertainty over risk (giving a distribution for this probability due to the current state of knowledge) Help in reduction in the overall uncertainty by studying the impact of epistemic uncertainty to the output uncertainty (see the section...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001727
EISBN: 978-1-62708-178-8
... be evaluated from s o , which is determined by analysis of the samples. Alternatively, an appropriate series of replicate measurements or samples can be devised to evaluate both standard deviations. Further reduction in measurement uncertainty is unimportant once it is one third or less of the sampling...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005505
EISBN: 978-1-62708-197-9
... design for each of the drawing stages. (e) Reduction in maximum effective strain in the cup during the optimization process. Source: Ref 6 Prior to executing the optimization, the authors did a thorough study of how the design variables interacted with each other. For instance, the authors...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006994
EISBN: 978-1-62708-439-0
.... The determination of the objective function for metal AM is based on the material, geometry, and demanded microstructure. The goal is to identify a robust design optimization under uncertainty for the microstructure. A hurdle for the broad application of AM techniques is the variation in the quality...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002468
EISBN: 978-1-62708-194-8
..., can be grouped into: Uncertainties associated with material properties due to variations in composition, heat treatment, and processing conditions as well as environmental variables such as temperature, time, humidity, and ambient chemicals. Manufacturing processes also contribute...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002367
EISBN: 978-1-62708-193-1
... Systems The design stresses that an engineer must adopt are as much controlled by the scatter in the fatigue data as by the mean value of strength for a certain design life. Thus, the uncertainty (scatter) in weldment fatigue life is as or more important than the mean value. This scatter has two...
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
..., the mathematical methods to obtain a POD curve, and techniques to assess uncertainty in the POD curve as it is obtained from a limited data set. The concept of model-assisted POD (MAPOD) is introduced, with additional details and representative examples of MAPOD. process modeling non-destructive evaluation...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005885
EISBN: 978-1-62708-167-2
... to austenite + carbide transformation (and leaving the ferrite + austenite phase field) for hypoeutectoid steels. The subscript c indicates the temperature at which all of the carbides are completely dissolved. It should be noted that the uncertainty associated with all of the Ac transformation temperatures...
Series: ASM Handbook
Volume: 24A
Publisher: ASM International
Published: 30 June 2023
DOI: 10.31399/asm.hb.v24A.a0006950
EISBN: 978-1-62708-439-0
... surface finish (mechanical), improved printability (geometry) Anisotropy Infill pattern modification, tool path optimization, incorporate material orientation as design variable in the automated design process (e.g., TO) Mechanical performance (mechanical) Uncertainty Reliability-based TO, robust...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0009007
EISBN: 978-1-62708-185-6
... is widely used to determine the mechanical properties of a material ( Ref 1 ). Uniform elongation, total elongation, and reduction in area at fracture are frequently used as indexes of ductility. The extent of deformation possible in a tension test, however, is limited by the formation of a necked region...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004188
EISBN: 978-1-62708-184-9
... solvents protic solvents corrosion behavior solution conductivity acidity environmental variable organic liquid CORROSION is much less predictable in organic or mixed-solvent environments than in aqueous process environments. As a result, many chemical companies face greater uncertainty when...
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
... to the rear of the automobile. The size of the tube is determined by the volume of the exhaust gases to be carried away and the extent to which the exhaust system can be permitted to impede the flow of gases from the engine. An additional device, the muffler, is required for noise reduction, and a catalytic...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001745
EISBN: 978-1-62708-178-8
..., but the more lax these standards, the less certain is the identity of the sample under examination. Adherence to the above standard is advisable for reasonable certainty. The acceptable range does not necessarily reflect the uncertainty or lack of precision of the analytical method used. The purity...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0003983
EISBN: 978-1-62708-185-6
... metal tubes with outside diameters of 15 to 25 times wall thickness. Lengthening increases as the amount of reduction per pass increases. Because of the uncertainty about the relative amounts of radial and axial movement of metal, percentage reduction is frequently designated in terms of diameter...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005683
EISBN: 978-1-62708-198-6
... , and can be expressed as electrical currents of oxidation and reduction. In electrochemistry, the term oxidation means a reaction involving loss of electrons and does not necessarily involve oxygen. In the oxidation (anodic) reactions involving metal, the reacting surface atoms change from the metallic...
Series: ASM Handbook Archive
Volume: 10
Publisher: ASM International
Published: 01 January 1986
DOI: 10.31399/asm.hb.v10.a0001734
EISBN: 978-1-62708-178-8
... Abstract Particle-induced x-ray emission (PIXE) is one of several quantitative analyses based on characteristic x-rays. This article provides a detailed account on the principles of PIXE, discussing the data-reduction codes used to identify, integrate, and reduce x-ray peaks into elemental...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006252
EISBN: 978-1-62708-169-6
... and distributions introduced into aluminum alloys by thermal operations associated with heat treatment. The available technologies by which residual stresses in aluminum alloys can be relieved are also described. The article shows why thermal stress relief is not a feasible stress-reduction technology...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003323
EISBN: 978-1-62708-176-4
.... Fasteners and studs should have their shanks machined to the dimensions shown in Fig. 9 . The reduction of the shank diameter of heat-treated fasteners and studs with nominal diameters larger than 16 mm should not exceed 25% of the original diameter of the product. Alternatively, fasteners 16 mm...