Simulation of thermal debinding: Effects of mass transport on equivalent stress

Ying Shengjie, Y. C. Lam, J. C. Chai, K. C. Tam

Research output: Contribution to journalConference article

10 Citations (Scopus)

Abstract

A simulation of thermal debinding in polymer removal from a PIM compact, based on integrated control volume finite difference and finite element methods, is proposed. Polymer pyrolysis, heat transfer, multi-phase fluid movement, as well as stress, deformation, and their interactions are simultaneously considered. The key phenomena of mass transport, i.e., the mass flux fields of total polymer, liquid polymer, polymer vapor, vapor diffusion, and vapor convection are analyzed. The effects of mass transport on the equivalent stress, which describes the distortion energy and is responsible for the yielding of a material, are investigated. The simulated results revealed that the equivalent stress, which might lead to failure of the compact, results mainly from the polymer liquid saturation gradient, i.e., the non-uniform distribution of polymer residue, which is attributed to the non-uniform flow of the polymer.

LanguageEnglish
Pages496-503
Number of pages8
JournalComputational Materials Science
Volume30
Issue number3-4 SPEC. ISS.
Early online date19 Jun 2004
DOIs
Publication statusPublished - Aug 2004
Externally publishedYes
EventInternational Conference on Materials for Advanced Technologies - , Singapore
Duration: 7 Dec 200312 Dec 2003

Fingerprint

Mass Transport
Thermal Effects
Thermal effects
temperature effects
Polymers
Mass transfer
polymers
Simulation
simulation
Vapors
vapors
nonuniform flow
Liquid
Pyrolysis
Mass flux
Integrated control
Control Volume
Liquids
liquids
Convection

Cite this

Shengjie, Ying ; Lam, Y. C. ; Chai, J. C. ; Tam, K. C. / Simulation of thermal debinding : Effects of mass transport on equivalent stress. In: Computational Materials Science. 2004 ; Vol. 30, No. 3-4 SPEC. ISS. pp. 496-503.
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Simulation of thermal debinding : Effects of mass transport on equivalent stress. / Shengjie, Ying; Lam, Y. C.; Chai, J. C.; Tam, K. C.

In: Computational Materials Science, Vol. 30, No. 3-4 SPEC. ISS., 08.2004, p. 496-503.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Simulation of thermal debinding

T2 - Computational Materials Science

AU - Shengjie, Ying

AU - Lam, Y. C.

AU - Chai, J. C.

AU - Tam, K. C.

PY - 2004/8

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N2 - A simulation of thermal debinding in polymer removal from a PIM compact, based on integrated control volume finite difference and finite element methods, is proposed. Polymer pyrolysis, heat transfer, multi-phase fluid movement, as well as stress, deformation, and their interactions are simultaneously considered. The key phenomena of mass transport, i.e., the mass flux fields of total polymer, liquid polymer, polymer vapor, vapor diffusion, and vapor convection are analyzed. The effects of mass transport on the equivalent stress, which describes the distortion energy and is responsible for the yielding of a material, are investigated. The simulated results revealed that the equivalent stress, which might lead to failure of the compact, results mainly from the polymer liquid saturation gradient, i.e., the non-uniform distribution of polymer residue, which is attributed to the non-uniform flow of the polymer.

AB - A simulation of thermal debinding in polymer removal from a PIM compact, based on integrated control volume finite difference and finite element methods, is proposed. Polymer pyrolysis, heat transfer, multi-phase fluid movement, as well as stress, deformation, and their interactions are simultaneously considered. The key phenomena of mass transport, i.e., the mass flux fields of total polymer, liquid polymer, polymer vapor, vapor diffusion, and vapor convection are analyzed. The effects of mass transport on the equivalent stress, which describes the distortion energy and is responsible for the yielding of a material, are investigated. The simulated results revealed that the equivalent stress, which might lead to failure of the compact, results mainly from the polymer liquid saturation gradient, i.e., the non-uniform distribution of polymer residue, which is attributed to the non-uniform flow of the polymer.

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KW - Mass transport

KW - Modeling

KW - Polymer pyrolysis

KW - Thermal debinding

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U2 - 10.1016/j.commatsci.2004.02.042

DO - 10.1016/j.commatsci.2004.02.042

M3 - Conference article

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EP - 503

JO - Computational Materials Science

JF - Computational Materials Science

SN - 0927-0256

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ER -