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single-objective optimization algorithms

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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
... or Kriging surrogate models have been employed for this purpose. This section describes optimization algorithms that provide a good set of complementary approaches to solve a wide variety of single-objective mechanical engineering applications. It should also be noted that the number of Pareto points...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005892
EISBN: 978-1-62708-167-2
... dominates x 2 x 1 is better than x 2 x 2 dominates x 1 x 2 is better than x 1 Neither of the two x 1 and x 2 are indifferent It should be noted that the concept of indifference does not apply under the frame of single-objective optimization. In fact, given...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002446
EISBN: 978-1-62708-194-8
... the success or failure of a CAE-based design optimization. Even with the most accurate numerical simulation and the best optimization algorithm, the success of the optimization may be in jeopardy if Eq 1 is not properly posed. The objective function and constraints must represent the important performance...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004022
EISBN: 978-1-62708-185-6
... procedures: defining the objective function, calculating the objective function, and searching an optimum design. It concludes with an example illustrating the optimization of conical-die extrusion. conical-die extrusion dies forming optimum design DIE AND PREFORM OPTIMIZATION is an activity...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003758
EISBN: 978-1-62708-177-1
... and guidelines for optimization of image processing algorithms from the viewpoint of shape quantification. It concludes with examples that demonstrate the usefulness of automatic image analysis in comparison to manual methods. automatic image analysis digital measurements image acquisition image...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003394
EISBN: 978-1-62708-195-5
... based on material width. EOP, edge of part Fig. 12 Finite-element mesh (left) and resin flow-front simulation (right) for resin transfer molding injection Fig. 3 Material scissoring shown by a draping simulation using the fishnet algorithm Abstract Abstract Continuous fiber...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003757
EISBN: 978-1-62708-177-1
... step, in which the several objects in the image must be identified and discriminated from the background. This is a complex and critical step because the software must mimic a sophisticated human cognition capability. Due to this complexity, it is often necessary to correct the segmentation result...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006439
EISBN: 978-1-62708-190-0
... a different location and from a different perspective. The single images show the same object, especially particular, distinct points on the surface of this object, at different locations. In other words, each of the images show the object displaced. This displacement is related to the spatial distance...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005502
EISBN: 978-1-62708-197-9
... domain. (b) Variation of objective function during optimization iteration. (c) Green density distributions in the initial and optimum designs. Source: Ref 24 Fig. 14 (a) Minimum grain size for a given final sinter density and (b) the corresponding sintering cycle for achieving this goal...
Series: ASM Handbook
Volume: 7
Publisher: ASM International
Published: 30 September 2015
DOI: 10.31399/asm.hb.v07.a0006033
EISBN: 978-1-62708-175-7
..., and the other is a derivative-based optimization scheme. The process designer must first select a reasonable initial guess, an objective function that needs to be minimized, and design variables for both approaches. Table 2 Complete set of material properties for simulating the sintering of W-8.4wt%Ni...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.a0005893
EISBN: 978-1-62708-167-2
... numerical methods often are required to solve nonlinear, interrelated electrothermal equations and to obtain precise quantitative results to compute optimal control algorithms. A systems approach should be used when choosing the most appropriate cost function for a particular IHI optimal control...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006568
EISBN: 978-1-62708-290-7
... and noncohesive powder at the presence of air. BFE, basic flowability energy. Courtesy of Freeman Technology Fig. 9 (a) Schematic of an object illuminated by x-ray beam shows the parameters used in the Radon transform. The subsequent schematics show (b) the one-dimensional (1D) x-ray projection from...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006456
EISBN: 978-1-62708-190-0
... referred to as industrial CT (iCT). X-ray computed tomography collects and reconstructs the data of x-ray transmission through a two-dimensional (2-D) slice of an object to form a cross-sectional image without interference from overlying and underlying areas of the object. The CT image represents the point...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006452
EISBN: 978-1-62708-190-0
.... analytical methods direct numerical methods finite-element methods nondestructive evaluation nonlinear imaging algorithms phased array ultrasound ULTRASOUND is an ideal modality for nondestructive evaluation (NDE) because it enables the interior of objects to be assessed without the safety...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002175
EISBN: 978-1-62708-188-7
... , and the radial infeed velocity, v f . The adjustment strategy uses a function G b to calculate the allowable power for burning and the optimal locus algorithm, based on a model of the grinding process mechanics, to maximize v f and calculate the corresponding value of n w such that P = P b . Thus...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003760
EISBN: 978-1-62708-177-1
... with a particular location within a sample, such as crystallographic orientation, chemical composition, or phase, can be used to produce a 3D image. Traditional two-dimensional (2D) metallographic methods provide single polished-and-etched sections for observation. Quantitative metallography can then be applied...
Series: ASM Handbook
Volume: 4C
Publisher: ASM International
Published: 09 June 2014
DOI: 10.31399/asm.hb.v04c.9781627081672
EISBN: 978-1-62708-167-2
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006472
EISBN: 978-1-62708-190-0
... for the reference blocks according to applicable codes and standards. It also provides the ASME, CEN, and ISO recommendations for examination of welds. The article concludes with information on the interpretation and analysis of TOFD images with an aid of sizing algorithms. sizing algorithm time-of-flight...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005540
EISBN: 978-1-62708-197-9
... Table 2 Summary of metal stamping codes by integration algorithm Method Code names Static implicit ABAQUS (standard), ADINA, MARC, INDEED, NIKE, Metalform Dynamic explicit LS-DYNA, PAM-STAMP, OPTRIS, RADIOSS, LLNL-DYNA, ABAQUS/Explicit, DYTRAN, DYNAMIC Static explicit ITAS...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005151
EISBN: 978-1-62708-186-3
... of Stamping Components,” Technical Papers 920639 and 920640, SAE Congress, 1992 • Aitharaju V. , Liu M. , Dong J. , Zhang J. , and Wang C.T. , Integrated Forming Simulations and Die Structural Analysis for Optimal Die Design , Proc. of NUMISHEET 2005 , 2005 , p 96 – 100...