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percolation model

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2015
DOI: 10.31399/asm.tb.cpi2.t55030082
EISBN: 978-1-62708-282-2
..., and percolation model of selective dissolution. dealloying corrosion ionization-redeposition surface diffusion volume diffusion percolation model DEALLOYING is a corrosion process in which one or more elements are selectively dissolved, leaving behind a porous residue of the remaining element(s...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2003
DOI: 10.31399/asm.tb.cfap.t69780336
EISBN: 978-1-62708-281-5
... in the physical characteristics of the preceding microbial- and enzyme-degraded films have been analyzed using percolation models ( Ref 21 , 22 ). Accessibility of biodegradable components, such as starch, can be treated as a conductivity (scalar) percolation problem ( Ref 23 ). The most important consequence...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390064
EISBN: 978-1-62708-459-8
... as they are subjected to pressure; that is, they are piezoviscous . Of the various formulae proposed to fit the experimentally observed variations, the most convenient and popular for fluid film lubrication modeling uses a power function (the Barus Law ): (5.2) η = η 0 exp ( γ p ) , where η...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2017
DOI: 10.31399/asm.tb.sccmpe2.t55090095
EISBN: 978-1-62708-266-2
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390019
EISBN: 978-1-62708-459-8
.... It also reviews the two basic friction rules applicable to metal forming and presents advanced friction models that account for the transition between Coulomb and Tresca behavior and the effects of lubrication. asperities friction factor interface pressure kurtosis metal forming roughness...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.9781627084598
EISBN: 978-1-62708-459-8
Series: ASM Technical Books
Publisher: ASM International
Published: 30 April 2020
DOI: 10.31399/asm.tb.bpapp.t59290085
EISBN: 978-1-62708-319-5
... outside the forming window, such as incomplete filling due to excess viscosity or powder-binder separation due to low viscosity. The forming window defines the allowed feedstock attributes. Mathematical models further provide a basis for linking powder-binder formulation to processing conditions...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390039
EISBN: 978-1-62708-459-8
... and either become neutralized or, if they are sharp and hard, stick out at an unfavorable angle and act as cutting tools or third-body wear sources. Usually wear is a rare event, predictive models are suspect if they exist at all, and therefore accelerated life testing is often applied. It is very...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390241
EISBN: 978-1-62708-459-8
... simultaneous measurement of draw force and die temperature, thereby avoiding accurate characterization of the workpiece’s stress-strain behavior. Friction is obtained from a thermomechanical model of the process. (c) Identical bars or wires can be drawn at various reductions with dies of widely varying half...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390173
EISBN: 978-1-62708-459-8
... various aspects of the theory apply to shape rolling as well. It derives numerous equations and models to help quantify the forces, torque, and power involved in rolling operations and the associated heating, slip, strain distribution, and deformation in both the workpiece and rolls. It describes...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390456
EISBN: 978-1-62708-459-8
... . According to the shear model of cutting proposed by Merchant [ 12 ], the chip is formed by shearing closely spaced lamellae. The chip flows up along the rake face of the tool but acquires a curvature and lifts away gradually. Process Geometry and Kinematics In principle, it makes no difference...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2019
DOI: 10.31399/asm.tb.mfadr7.t91110351
EISBN: 978-1-62708-247-1
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.pb.t51230143
EISBN: 978-1-62708-351-5
... substrates, is to coat the latter with a paste containing fine powders of a suitable metal and a glass or low-melting-point ceramic. On firing, the glass or ceramic phase wets the component surface, much like an enamel, sometimes partly dissolving the substrate, while the metal particles percolate...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2004
DOI: 10.31399/asm.tb.ps.t62440049
EISBN: 978-1-62708-352-2
.... This is particularly true where the parent metal has a multilayer metallic coating, a situation that is commonly met with in soldering. Although the outermost layer, often gold, will have indefinite shelf life, if it is not fully dense or sufficiently thick, oxygen will be able to percolate through it and oxidize less...
Series: ASM Technical Books
Publisher: ASM International
Published: 30 November 2023
DOI: 10.31399/asm.tb.ceeg.t59370115
EISBN: 978-1-62708-447-5
... while water is percolated to granulate the slag. The volume of slag that is generated can be around 0.6 to 0.8 cubic meters per ton of metal melted. 6.2.5 Cupolas with a Forehearth The amount of metal required fluctuates depending on the individual parts being molded at any given time...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 2022
DOI: 10.31399/asm.tb.isceg.t59320217
EISBN: 978-1-62708-332-4
..., mold temperature, pouring rate, velocity loss due to the mold, and gating friction and bends. Casting designers need guidelines to initiate the design and build the computer-aided design (CAD) model. Reference 18 provides a guide for minimum wall thickness of carbon steel and low-alloy steel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2005
DOI: 10.31399/asm.tb.pb.t51230105
EISBN: 978-1-62708-351-5
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.9781627082532
EISBN: 978-1-62708-253-2