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jacobs model

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Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.a0006546
EISBN: 978-1-62708-290-7
... behavior within particles. The third section on vat photopolymerization (VPP) discusses two primary approaches to modeling VPP processes, namely a lumped-parameter approach to estimate cured regions in the vat, known as the Jacobs model, and a high-fidelity, continuum approach that uses finite-element...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004206
EISBN: 978-1-62708-184-9
... factors to increase the rate of corrosion. Effects such as fretting corrosion, corrosion fatigue, wear-assisted corrosion, stress-assisted corrosion, stress-corrosion cracking fall under this more general term. Also part of this model is the restricted (or crevicelike) environment that can serve...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005653
EISBN: 978-1-62708-198-6
... mechanisms that combine mechanical factors with electrochemical factors to increase the rate of corrosion. Effects such as fretting corrosion, corrosion fatigue, wear-assisted corrosion, stress-assisted corrosion, stress-corrosion cracking fall under this more general term. Also part of this model...
Book: Casting
Series: ASM Handbook
Volume: 15
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.hb.v15.a0005237
EISBN: 978-1-62708-187-0
... Abstract In order to model macrosegregation, one must consider convection and the partitioning of segregating elements at the dendritic length scale. This article describes microsegregation with diffusion in the solid. It presents a continuum model of macrosegregation and illustrates...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002356
EISBN: 978-1-62708-193-1
... Abstract This article summarizes fatigue phenomena in metallic materials. It discusses fatigue under variable-amplitude (VA) loading, with emphasis on crack growth. The article presents the prediction models of crack initiation and crack growth under VA loading. It concludes with a discussion...
Series: ASM Handbook
Volume: 21
Publisher: ASM International
Published: 01 January 2001
DOI: 10.31399/asm.hb.v21.a0003397
EISBN: 978-1-62708-195-5
... of a range of technologies that are capable of taking computer-aided design (CAD) models and converting them to a physical form or part. This process is automatic, generally independent of the model geometry, and does not require special tooling or fixtures. Complex, three-dimensional (3-D) contours...
Series: ASM Handbook
Volume: 22B
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.hb.v22b.a0005510
EISBN: 978-1-62708-197-9
... Abstract This article provides an overview of the studies on computational modeling of the vacuum arc remelting (VAR) and electroslag remelting (ESR) processes. These models involve the axisymmetric analysis of the electromagnetic, flow, heat-transfer, and phase-change phenomena to predict...
Series: ASM Handbook
Volume: 22A
Publisher: ASM International
Published: 01 December 2009
DOI: 10.31399/asm.hb.v22a.a0005435
EISBN: 978-1-62708-196-2
... Abstract This article assesses the evolution of martensite modeling in the changing materials engineering environment. It describes the physics of displacive transformations using Ginzburg-Landau theory, microstructure representation, dynamics and simulations, density functional theory...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004147
EISBN: 978-1-62708-184-9
... ) and creviced safe ends ( Fig. 6b ). The strong influence of conductivity on cracking of stainless steel has also been shown in laboratory tests and plant recirculation piping, where predictive modeling ( Ref 1 , Ref 5 , Ref 6 , Ref 7 , Ref 45 , 46 ) has been compared to field data on the operational time...
Series: ASM Handbook
Volume: 13C
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v13c.a0004207
EISBN: 978-1-62708-184-9
... nucleation is unclear, and some models propose the penetration of chloride ion through the film and dissolution...
Series: ASM Handbook
Volume: 14B
Publisher: ASM International
Published: 01 January 2006
DOI: 10.31399/asm.hb.v14b.a0005133
EISBN: 978-1-62708-186-3
... creep in terms of a constitutive model, and then using the constitutive model in a process model or finite element analysis to predict the final part shape. age-forming finite element analysis low-temperature creep mechanical test stress AGE FORMING is a shaping process for heat treatable...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006461
EISBN: 978-1-62708-190-0
... numerical methods are useful when features are a similar size to the wavelength ( Ref 2 ). Ray theory is also useful where features are widely separated ( Ref 8 ). However, all models must take into account mode conversion from Rayleigh to, for example, bulk waves at each scattering interaction ( Ref 2 , 8...
Series: ASM Handbook
Volume: 14A
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v14a.a0004024
EISBN: 978-1-62708-185-6
... times for converting a computer model into a physical prototype, which can be evaluated for geometric attributes and functionality. The tremendous potential and demand for these technologies have led to their rapid proliferation and increased complexity. In the area of net shape forming...
Series: ASM Handbook
Volume: 8
Publisher: ASM International
Published: 01 January 2000
DOI: 10.31399/asm.hb.v08.a0003301
EISBN: 978-1-62708-176-4
... , and 6 ). Model studies show that similar results emerge at high strain rate. Triaxial Hopkinson techniques can be used to simultaneously subject a sample to axial and lateral compressions. The lateral compression may be applied through a pneumatic pressure vessel ( Ref 7 , 8 , and 9...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005611
EISBN: 978-1-62708-174-0
... Abstract This article focuses on the use of electron beam (EB) for near-net shape processing based on the wire feed material-delivery method. EB deposition processes start with a 3-D model designed in a computer-aided design (CAD) environment, where the deposition path and process parameters...
Series: ASM Handbook
Volume: 24
Publisher: ASM International
Published: 15 June 2020
DOI: 10.31399/asm.hb.v24.9781627082907
EISBN: 978-1-62708-290-7
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006465
EISBN: 978-1-62708-190-0
... Abstract Additive manufacturing (AM) is the process of joining materials to make parts from three-dimensional (3D) model data, usually layer upon layer, as opposed to subtractive manufacturing and formative manufacturing methodologies. This article discusses various defects in AM components...
Series: ASM Handbook
Volume: 23
Publisher: ASM International
Published: 01 June 2012
DOI: 10.31399/asm.hb.v23.a0005656
EISBN: 978-1-62708-198-6
...) as an implant in bone ( Ref 18 ). In Europe, Ducheyne et al. devised stainless steel porous coatings that possessed pore sizes in the range of 50 to 100 µm (1970 to 3940 µin.) and analyzed their behavior under dynamic loading conditions in animal models ( Ref 19 , 20 ). He found that pore sizes greater than 70...
Series: ASM Handbook
Volume: 1A
Publisher: ASM International
Published: 31 August 2017
DOI: 10.31399/asm.hb.v01a.a0006304
EISBN: 978-1-62708-179-5
... gray irons, graphite nucleates at the austenite/liquid interface without the presence of any foreign inclusions. This supports the nucleation on carbon-rich clusters theory, which is a one-stage nucleation model. Another example of the one-stage nucleation model is the saltlike carbides nucleation...
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
... that is difficult for conventional manufacturing techniques ( Ref 4 ). Several ceramic AM processes, including vat photopolymerization (VPP), two-photon polymerization (TPP), fused-deposition modeling (FDM), direct ink writing (DIW), inkjet printing, powder binder jetting, selective laser sintering/melting (SLS/M...