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Exploring the Structure and Mechanics of Multifunctional Graphene Oxide-Based Composite Films
Exploring the Structure and Mechanics of Multifunctional Graphene Oxide-Based Composite Fi...
Exploring the Structure and Mechanics of Multifunctional Graphene Oxide-Based Composite Films

상세정보

자료유형  
 학위논문 서양
최종처리일시  
20260311091522.5
ISBN  
9798270234942
DDC  
551
저자명  
Jayatilaka, Gehan C.
서명/저자  
Exploring the Structure and Mechanics of Multifunctional Graphene Oxide-Based Composite Films / Gehan C Jayatilaka
발행사항  
[Sl] : The University of Texas at Austin, 2025
형태사항  
1 electronic resource (121 pages)
주기사항  
Source: Dissertations Abstracts International, Volume: 87-06, Section: B.
주기사항  
Advisors: Tehrani, Mehran; Cullinan, Michael Committee members: Loh, Kenneth; Haberman, Michael; Chang, Chih-Hao.
학위논문주기  
- Ph.D. : The University of Texas at Austin, 2025.
초록/해제  
요약There is significant demand across industries for lightweight, multifunctional materials capable of performing under different environmental conditions. As introduced in this dissertation, one promising class of such materials is lightweight structuraldamping films-based graphene oxide (GO), a relatively inexpensive and waterprocessable sister of graphene. The damping functionality is essential for protecting sensitive components from damage caused by vibrations and potentially impact. Interestingly, GO films overcome the limitations of traditional materials by providing both high stiffness and damping across wide temperature and humidity ranges. Simple processing renders these films electrically conductive, adding functionalities such as electromagnetic interference (EMI) shielding and lightning strike protection, which are particularly important for aerospace applications. As a result, GO films can eliminate the need for multiple materials in advanced structures, thus avoiding complex and potentially inefficient designs. This dissertation investigates the stress transfer and damping mechanisms in GObased films and composites, using experimental testing and numerical modeling. Using this new understanding, key structural modifications are applied to GO films, including the chemical reduction of GO to produce reduced graphene oxide (rGO), tuning of particle size and film packing, and reinforcement with carbon nanofibers (CNF). These strategies aim to enhance not only damping and stiffness but also electrical and mechanical performance. By correlating structural changes with functional improvements, this work advances the development of multifunctional structural damping films. Ultimately, such films could be integrated into conventional composites to enhance bulk properties, enabling more efficient and less constrained structural designs.
언어주기  
English
일반주제명  
Materials science
일반주제명  
Nanotechnology
일반주제명  
Aerospace engineering
키워드  
Graphene oxide films
키워드  
Structural damping
키워드  
Stress transfer
기타저자  
The University of Texas at Austin Mechanical Engineering
기본자료저록  
Dissertations Abstracts International. 87-06B.
전자적 위치 및 접속  
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 008260311s2025        us                                    eng  d
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■020    ▼a9798270234942
■040    ▼aMiAaPQD▼beng▼cMiAaPQD▼erda
■082    ▼a551
■1001  ▼aJayatilaka,  Gehan  C.▼eauthor.
■24510▼aExploring  the  Structure  and  Mechanics  of  Multifunctional  Graphene  Oxide-Based  Composite  Films  ▼cGehan  C  Jayatilaka
■260    ▼a[Sl]▼bThe  University  of  Texas  at  Austin▼c2025
■264  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2025
■300    ▼a1  electronic  resource  (121  pages)
■336    ▼atext▼btxt▼2rdacontent
■337    ▼acomputer▼bc▼2rdamedia
■338    ▼aonline  resource▼bcr▼2rdacarrier
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  87-06,  Section:  B.
■500    ▼aAdvisors:  Tehrani,  Mehran;  Cullinan,  Michael    Committee  members:  Loh,  Kenneth;  Haberman,  Michael;  Chang,  Chih-Hao.
■5021  ▼bPh.D.▼cThe  University  of  Texas  at  Austin▼d2025.
■520    ▼aThere  is  significant  demand  across  industries  for  lightweight,  multifunctional  materials  capable  of  performing  under  different  environmental  conditions.  As  introduced  in  this  dissertation,  one  promising  class  of  such  materials  is  lightweight  structuraldamping  films-based  graphene  oxide  (GO),  a  relatively  inexpensive  and  waterprocessable  sister  of  graphene.  The  damping  functionality  is  essential  for  protecting  sensitive  components  from  damage  caused  by  vibrations  and  potentially  impact.  Interestingly,  GO  films  overcome  the  limitations  of  traditional  materials  by  providing  both  high  stiffness  and  damping  across  wide  temperature  and  humidity  ranges.  Simple  processing  renders  these  films  electrically  conductive,  adding  functionalities  such  as  electromagnetic  interference  (EMI)  shielding  and  lightning  strike  protection,  which  are  particularly  important  for  aerospace  applications.  As  a  result,  GO  films  can  eliminate  the  need  for  multiple  materials  in  advanced  structures,  thus  avoiding  complex  and  potentially  inefficient  designs. This  dissertation  investigates  the  stress  transfer  and  damping  mechanisms  in  GObased  films  and  composites,  using  experimental  testing  and  numerical  modeling.  Using  this  new  understanding,  key  structural  modifications  are  applied  to  GO  films,  including  the  chemical  reduction  of  GO  to  produce  reduced  graphene  oxide  (rGO),  tuning  of  particle  size  and  film  packing,  and  reinforcement  with  carbon  nanofibers  (CNF).  These  strategies  aim  to  enhance  not  only  damping  and  stiffness  but  also  electrical  and  mechanical  performance.  By  correlating  structural  changes  with  functional  improvements,  this  work  advances  the  development  of  multifunctional  structural  damping  films.  Ultimately,  such  films  could  be  integrated  into  conventional  composites  to  enhance  bulk  properties,  enabling  more  efficient  and  less  constrained  structural  designs.
■546    ▼aEnglish
■590    ▼aSchool  code:  0227
■650  4▼aMaterials  science
■650  4▼aNanotechnology
■650  4▼aAerospace  engineering
■653    ▼aGraphene  oxide  films
■653    ▼aStructural  damping
■653    ▼aStress  transfer
■7102  ▼aThe  University  of  Texas  at  Austin▼bMechanical  Engineering.▼edegree  granting  institution.
■7201  ▼aTehrani,  Mehran▼edegree  supervisor.
■7201  ▼aCullinan,  Michael▼edegree  supervisor.
■7730  ▼tDissertations  Abstracts  International▼g87-06B.
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17361262▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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