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Field Activated Sintering Technology: Multi-physics Phenomena Modeling: A Coupled Thermal-electrical-densification Framework epub download

by Jing Zhang


sintering technology: multi-physics phenomena modeling: a coupled ensification framework - Berlin: Lambert Academic Publishing, 2010 . 2 Evolution of effective thermal conductivity.

Zhang J. Field activated sintering technology: multi-physics phenomena modeling: a coupled ensification framework - Berlin: Lambert Academic Publishing, 2010. ix, 90 . ill. - Re. . 6-90. ISBN 978-3-8383-4230-6. 58. Chapter 5 Conclusions and Future Work. 59. Appendix A: ABAQUS User Subroutines. 60 Appendix B: Procedure for Calibration of Contact Resistance 64 Appendix C: Case Study of FAST.

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A fully coupled tering finite element model was . Coupled crystals of eutectic powder are connected with each other in the electric field.

A fully coupled tering finite element model was developed and implemented to explore electric field assisted sintering techniques (FAST). This fully coupled model was used to predict densification kinetics under FAST like conditions and examine the evolution of material properties as the sample transitions from a loose powder to a fully dense compact and the resulting effect on the electrical and thermal fields within the compact.

The field activated sintering technique (FAST) is a powder consolidation process via the application of pulsed current and pressure

The field activated sintering technique (FAST) is a powder consolidation process via the application of pulsed current and pressure o achieving excellent physical properties. Specifically, a coupled sification framework for the design and optimization of FAST type processing has been proposed and implemented into a finite element package.

The field activated sintering technique (FAST) is a powder consolidation process via the application of pulsed current and pressure. This work covers the physical phenomena, multi-scale analytical and numerical models, experimental studies, and application of FAST processing.

A fully coupled thermal–electric-sintering finite element model was developed and implemented to predict heterogeneous densification in net-shape compacts using electric field assisted sintering techniques (FAST). FAST is a single-step processing operation for producing bulk materials from powders, in which the powder is heated by the application of electric current under pressure. Previous modeling efforts on FAST have mostly considered the thermal–electric aspect of the problem and have largely neglected the sintering aspect of the problem.

Specifically, a coupled sification framework for the .

Specifically, a coupled sification framework for the design and optimization of FAST type processing has been proposed and implemented into a finite element package. Spark Plasma Sintering (SPS) or field activated sintering technique (FAST) is an unconventional and novel powder consolidation process via simultaneous application of special pulsed current and mechanical pressure.

In field activation sintering. Application of this model for field activated sintering of alumina is presented here. Jing Zhang 1, Antonios Zavaliangos 1, Martin Kraemer 2 and Joanna Groza 2. 1 Drexel University. phenomena are modeled on the basis of thermal and electrical gap conductances, s G (Ω-m 2 ) -1 and h G. (W/m 2 - o C) that are related to the contact resistances. INTRODUCTION Field activation sintering technique (FAST) belongs to a family of manufacturing techniques that produce sintered parts from powder via the application of electric field. Numerous experiments have been carried out for conductive and non-conductive powders.

In this work, a modeling framework of modeling the PBF process is proposed, as illustrated in Figure 1. Several length scales and multiple physics are included in this framework

In this work, a modeling framework of modeling the PBF process is proposed, as illustrated in Figure 1. Several length scales and multiple physics are included in this framework. Sintering mechanisms, atomic diffusion, and resultant mechanical properties are investigated using a molecular dynamics model at atomistic scale. Powder deposition, powder flow, and laser heating of the powder bed are simulated by a discrete element model at mesoscale. Additionally, a finite element study of thermal stress or distortion evolution at macroscale level is presented

The field activated sintering technique (FAST) is a powder consolidation process via the application of pulsed current and pressure. Compared with conventional hot pressing and hot isostatic pressing, FAST has demonstrated a rapid densification process that has the potential to minimize grain growth, which is crucial to achieving excellent physical properties. This work covers the physical phenomena, multi-scale analytical and numerical models, experimental studies, and application of FAST processing. Specifically, a coupled thermal-electric-densification framework for the design and optimization of FAST type processing has been proposed and implemented into a finite element package. A discrete finite element method is also developed to determine the effective thermal conductivity in a particulate system with realistic microstructure. Moreover, FAST simulation of a hip joint replacement is demonstrated.

Field Activated Sintering Technology: Multi-physics Phenomena Modeling: A Coupled Thermal-electrical-densification Framework epub download

ISBN13: 978-3838342306

ISBN: 3838342305

Author: Jing Zhang

Category: Other

Subcategory: Science & Mathematics

Language: English

Publisher: LAP Lambert Academic Publishing (February 17, 2010)

Pages: 108 pages

ePUB size: 1912 kb

FB2 size: 1945 kb

Rating: 4.1

Votes: 960

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