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microscale models

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Published: 01 January 2005
Fig. 17 Diagram of the general procedure for linking microscale modeling to the macroscale. CL, constitutive law More
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006775
EISBN: 978-1-62708-295-2
... Abstract This article focuses on characterizing the fracture-surface appearance at the microscale and contains some discussion on both crack nucleation and propagation mechanisms that cause the fracture appearance. It begins with a discussion on microscale models and mechanisms for deformation...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003538
EISBN: 978-1-62708-180-1
... Abstract This article provides a description of the microscale models and mechanisms for deformation and fracture. Macroscale and microscale appearances of ductile and brittle fracture are discussed for various specimen geometries and loading conditions. The article reviews the general...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005421
EISBN: 978-1-62708-196-2
... Abstract This article focuses on the modeling and simulation of cavitation phenomena. It summarizes the experimental observations of cavitation and reviews the modeling of cavity nucleation and growth. The article discusses the modeling of the cavity growth based on mesoscale and microscale...
Series: ASM Handbook
Volume: 18
Publisher: ASM International
Published: 31 December 2017
DOI: 10.31399/asm.hb.v18.a0006379
EISBN: 978-1-62708-192-4
... roughness, with AFM, can provide a precise picture of surface roughness and can be used as input for contact mechanics computer models. The article also describes microscale adhesion and adhesion measurement methods using microelectromechanical systems technologies. It reviews certain considerations used...
Image
Published: 15 June 2020
Fig. 9 Shrinkage and compensation in vat photopolymerization (VPP)-based ceramic printing. (a) Ceramic parts before and after postprocessing. (b) Shrinkage of ceramic part fabricated by microscale VPP-based ceramic printing. (c) Final ceramic part after postprocessing. (d) Compensation More
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003537
EISBN: 978-1-62708-180-1
... components, which is addressed in detail in Ref 1 , is not covered in this Volume. Tables 1 and 2 list some general types of macroscale and microscale fractographic features, which are described in more detail in this article. In summary form, the following are key features in distinguishing between...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006774
EISBN: 978-1-62708-295-2
... are increased as crystallinity increases, while ductility is usually reduced. In contrast to modeling of metallic material behavior, it is uncommon to describe behavior of polymeric material in terms of dislocation models and/or microscale slip and twinning processes. Deformation...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005420
EISBN: 978-1-62708-196-2
... ). Attachment and removal by bubbles can be modeled by computing the attachment rates of different particle sizes to different bubble sizes and shapes in computational models of these microscale phenomena ( Ref 16 , 18 ). These attachment rates can then be incorporated into the macroscale models of fluid...
Series: ASM Handbook
Volume: 9
Publisher: ASM International
Published: 01 December 2004
DOI: 10.31399/asm.hb.v09.a0003729
EISBN: 978-1-62708-177-1
... Abstract Computational modeling assists in addressing the issues of solid/liquid interface dynamics at the microlevel. It also helps to visualize the grain length scale, fraction of phases, or even microstructure transitions through microstructure maps. This article provides a detailed account...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006314
EISBN: 978-1-62708-179-5
... models ( Ref 27 ). They couple the macroscale heat transfer ( Eq 1 ) with phenomena occurring at the grain size (microscale) level ( Eq 2 , 3 ). As already mentioned, the first multiscale solidification model was published by Oldfield ( Ref 1 ), then followed at some distance by that of Stefanescu...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004027
EISBN: 978-1-62708-185-6
... stress and strain, for example, at the macro level ( Fig. 17 ). Fig. 17 Diagram of the general procedure for linking microscale modeling to the macroscale. CL, constitutive law However, even though “hybrid,” CAFE modeling does not exploit production data to improve the accuracy of its...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006578
EISBN: 978-1-62708-290-7
... and compensation in vat photopolymerization (VPP)-based ceramic printing. (a) Ceramic parts before and after postprocessing. (b) Shrinkage of ceramic part fabricated by microscale VPP-based ceramic printing. (c) Final ceramic part after postprocessing. (d) Compensation by redesign of the build-part digital model...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005417
EISBN: 978-1-62708-196-2
... coefficient heat-transfer coefficient computer simulations oxide scales hot metal ring test thermomechanical processing KNOWLEDGE OF FRICTION AND HEAT TRANSFER is vital to the understanding and operation of metal forming. Modeling and numerical simulations are now extensively used for optimization...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005227
EISBN: 978-1-62708-187-0
... and melt infiltration, used in the synthesis of MMCs. The article also considers the fundamentals of the process and presents a computational modeling of particle/solidification front interactions in metal-ceramic systems. The article concludes with information on nanocomposites. casting melt...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003395
EISBN: 978-1-62708-195-5
... the desired extensional, flexural, and torsional stiffnesses. The design at the microscale is more important than simply the orientation of the reinforcement. Failure mechanisms such as delamination, fiber microbuckling, fiber kinking, and transverse cracking all occur on the microscale and are sensitive...
Book: Machining
Series: ASM Handbook
Volume: 16
Publisher: ASM International
Published: 01 January 1989
DOI: 10.31399/asm.hb.v16.a0002117
EISBN: 978-1-62708-188-7
... the mechanics of the machining process, and presents the principles of the orthogonal cutting model. The article also analyzes the effect of workpiece properties on chip formation. cutting deformation machining metal deformation orthogonal cutting model shear deformation THE BASIC MECHANISM...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003281
EISBN: 978-1-62708-176-4
... Abstract This article describes the techniques for measuring friction, namely, inclined-plane method; friction test methods using weights and pulleys; friction tests of shafts and capstans; other types of friction tests, including standards; microscale friction tests; and friction testing under...
Series: ASM Handbook
Volume: 20
Publisher: ASM International
Published: 01 January 1997
DOI: 10.31399/asm.hb.v20.a0002492
EISBN: 978-1-62708-194-8
... ). The design at the microscale is more important than the simple orientation of the reinforcement. Failure mechanisms such as delamination, fiber microbuckling, fiber kinking, and transverse cracking all occur on the microscale and are sensitive to manufacturing variations ( Ref 2 ). Just as the design...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006307
EISBN: 978-1-62708-179-5
... without going into dislocation theory. The article discusses modeling of hardness in cast iron based on a regular solution equation in which the properties of each phase depend on chemical composition and coarseness. It describes the evaluation of material parameters from the tensile stress-strain curve...