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Microscale Modeling of Thermal Protection Materials Based on X-Ray Microtomography
Microscale Modeling of Thermal Protection Materials Based on X-Ray Microtomography
Microscale Modeling of Thermal Protection Materials Based on X-Ray Microtomography

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260202105609
ISBN  
9798265426956
DDC  
005
저자명  
Ferguson, Joseph C.
서명/저자  
Microscale Modeling of Thermal Protection Materials Based on X-Ray Microtomography
발행사항  
[Sl] : Stanford University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
222 p
주기사항  
Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
주기사항  
Advisor: Elschot, Sigrid;Farhat, Charbel.
학위논문주기  
Thesis (Ph.D.)--Stanford University, 2024.
초록/해제  
요약In many materials science applications, physical phenomena can manifest across broad spatial and temporal scales. In my field of interest, modeling Thermal Protection System (TPS) materials for spacecraft atmospheric entry, spatial dimensions vary from the entire heat shield to the material's microstructure and even down to the atomic structure of the constituent materials. Multiscale modeling efforts aim to connect these spatial scales by utilizing results or effective behaviors from smaller scales to inform models at larger scales.This thesis introduces numerical methodologies, practical considerations, and applications in the microscale modeling of TPS materials. These efforts include the calculation of effective macroscale material properties and material response, with the goal of informing models used to predict system-level performance.In this research, X-ray microtomography imaging is used to obtain a detailed description of the material's microstructure. Numerical methods tailored for microtomography data were developed and discussed.These methods are integrated into the Porous Microstructure Analysis (PuMA) software, a tool that was created in 2014 and is under active development in collaboration with the NASA Ames Research Center. The thesis begins with an overview of image-based materials modeling and an introduction to the PuMA software. It then discusses calculations of material properties and statistical analyses for simulations based on X-ray microtomography data. Specific physical and numerical models are then elaborated in dedicated chapters. These include continuum to rarefied tortuosity, strategies for handling anisotropic materials, cut-cell heat transfer, and a microscale solver for diffusion-reaction processes. The ultimate goal of this research is to develop numerical methods, workflows, and best practices for predictive materials modeling at the microscale. Although this thesis presents results from simulations on specific fibrous and woven TPS materials, the underlying methods are the primary contribution of this work, particularly since many real TPS materials are subject to export control.While originally developed for modeling thermal protection materials, many of the mathematical and numerical models presented in this thesis are applicable to a wide range of materials science applications including the study of batteries, composites, and geological applications among others.
일반주제명  
User interface
일반주제명  
Software
일반주제명  
Tomography
일반주제명  
Carbon fibers
일반주제명  
Oxidation
일반주제명  
Heat conductivity
일반주제명  
Boundary conditions
일반주제명  
Visualization
일반주제명  
Mathematics
일반주제명  
Medical imaging
일반주제명  
Thermodynamics
기타저자  
Stanford University.
기본자료저록  
Dissertations Abstracts International. 87-05B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■035    ▼a(MiAaPQ)Stanfordcy161hh4902
■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a005
■1001  ▼aFerguson,  Joseph  C.
■24510▼aMicroscale  Modeling  of  Thermal  Protection  Materials  Based  on  X-Ray  Microtomography
■260    ▼a[Sl]▼bStanford  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a222  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-05,  Section:  B.
■500    ▼aAdvisor:  Elschot,  Sigrid;Farhat,  Charbel.
■5021  ▼aThesis  (Ph.D.)--Stanford  University,  2024.
■520    ▼aIn  many  materials  science  applications,  physical  phenomena  can  manifest  across  broad  spatial  and  temporal  scales.  In  my  field  of  interest,  modeling  Thermal  Protection  System  (TPS)  materials  for  spacecraft  atmospheric  entry,  spatial  dimensions  vary  from  the  entire  heat  shield  to  the  material's  microstructure  and  even  down  to  the  atomic  structure  of  the  constituent  materials.  Multiscale  modeling  efforts  aim  to  connect  these  spatial  scales  by  utilizing  results  or  effective  behaviors  from  smaller  scales  to  inform  models  at  larger  scales.This  thesis  introduces  numerical  methodologies,  practical  considerations,  and  applications  in  the  microscale  modeling  of  TPS  materials.  These  efforts  include  the  calculation  of  effective  macroscale  material  properties  and  material  response,  with  the  goal  of  informing  models  used  to  predict  system-level  performance.In  this  research,  X-ray  microtomography  imaging  is  used  to  obtain  a  detailed  description  of  the  material's  microstructure.  Numerical  methods  tailored  for  microtomography  data  were  developed  and  discussed.These  methods  are  integrated  into  the  Porous  Microstructure  Analysis  (PuMA)  software,  a  tool  that  was  created  in  2014  and  is  under  active  development  in  collaboration  with  the  NASA  Ames  Research  Center.  The  thesis  begins  with  an  overview  of  image-based  materials  modeling  and  an  introduction  to  the  PuMA  software.  It  then  discusses  calculations  of  material  properties  and  statistical  analyses  for  simulations  based  on  X-ray  microtomography  data.  Specific  physical  and  numerical  models  are  then  elaborated  in  dedicated  chapters.  These  include  continuum  to  rarefied  tortuosity,  strategies  for  handling  anisotropic  materials,  cut-cell  heat  transfer,  and  a  microscale  solver  for  diffusion-reaction  processes.  The  ultimate  goal  of  this  research  is  to  develop  numerical  methods,  workflows,  and  best  practices  for  predictive  materials  modeling  at  the  microscale.  Although  this  thesis  presents  results  from  simulations  on  specific  fibrous  and  woven  TPS  materials,  the  underlying  methods  are  the  primary  contribution  of  this  work,  particularly  since  many  real  TPS  materials  are  subject  to  export  control.While  originally  developed  for  modeling  thermal  protection  materials,  many  of  the  mathematical  and  numerical  models  presented  in  this  thesis  are  applicable  to  a  wide  range  of  materials  science  applications  including  the  study  of  batteries,  composites,  and  geological  applications  among  others.
■590    ▼aSchool  code:  0212.
■650  4▼aUser  interface
■650  4▼aSoftware
■650  4▼aTomography
■650  4▼aCarbon  fibers
■650  4▼aOxidation
■650  4▼aHeat  conductivity
■650  4▼aBoundary  conditions
■650  4▼aVisualization
■650  4▼aMathematics
■650  4▼aMedical  imaging
■650  4▼aThermodynamics
■690    ▼a0405
■690    ▼a0574
■690    ▼a0348
■71020▼aStanford  University.
■7730  ▼tDissertations  Abstracts  International▼g87-05B.
■790    ▼a0212
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360715▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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