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Damage Detection, Damage Localization, and Fatigue Life Prediction for Large-Area FRP Composites
Damage Detection, Damage Localization, and Fatigue Life Prediction for Large-Area FRP Comp...
Damage Detection, Damage Localization, and Fatigue Life Prediction for Large-Area FRP Composites

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자료유형  
 학위논문 서양
최종처리일시  
20250211153036
ISBN  
9798346752431
DDC  
621
저자명  
Demo, Luke Benjamin.
서명/저자  
Damage Detection, Damage Localization, and Fatigue Life Prediction for Large-Area FRP Composites
발행사항  
[Sl] : Columbia University, 2024
발행사항  
Ann Arbor : ProQuest Dissertations & Theses, 2024
형태사항  
152 p
주기사항  
Source: Dissertations Abstracts International, Volume: 86-06, Section: B.
주기사항  
Advisor: Feng, Maria Q.
학위논문주기  
Thesis (Ph.D.)--Columbia University, 2024.
초록/해제  
요약In this work, a novel self-sensing technology is introduced for fiber-reinforced polymer (FRP) composites, offering an accurate and cost-effective solution for damage detection, localization, and fatigue life prediction. This dissertation implements an innovative approach, transforming structural carbon fiber tows into piezoresistive sensors that enable real-time structural health monitoring (SHM) without the need for additional sensor devices. The self-damage detection and memory (SDDM) hybrid composite material leverages the carbon fiber as a sensor network, with glass fiber providing electrical insulation. Damage detection capabilities are first introduced, demonstrated by tensile testing that revealed two distinct loading peaks and a sharp nonlinear increase in resistance at the point of carbon fiber failure, highlighting its capabilities for damage early warning. Progressive impact tests further confirmed the material's ability to permanently record microdamage, showcasing a self-memory function that could inform life-cycle predictions.Next, a practical sensor layout was developed, utilizing carbon fiber sensor tow branches connected in parallel each with varying resistances. This novel design can monitor large areas while minimizing the number of connections required to the DAQ circuit, significantly reducing manufacturing costs and complexities. Impact tests on carbon and glass fiber-reinforced composites validated the system's ability to detect and precisely locate damage, with less than three percent error between the measured resistance and predicted damage location. These results highlight the effectiveness of the proposed damage localization framework, offering an efficient SHM solution for large-area composite structures. Lastly, this dissertation introduces a low-cost, real-time fatigue life prediction system that leverages the piezoresistive cumulative damage behavior of carbon fiber sensor tows. A Bidirectional Long Short-Term Memory (LSTM) neural network was implemented to predict fatigue life based solely on resistance time-history, with no need for explicit stress inputs. Fatigue tests conducted across various stress amplitudes were used to train and evaluate a LSTM model, with results indicating the model's ability to accurately predict remaining life. Moreover, testing results showed a sharp increase in resistance before failure, demonstrating the carbon fiber sensor tow's damage early warning capabilities for both cyclic and quasistatic monotonic loading. This system presents a promising, cost-effective SHM method that not only ensures structural safety but also extends the service life of FRP composites through accurate fatigue life prediction.
일반주제명  
Mechanical engineering
일반주제명  
Materials science
일반주제명  
Engineering
키워드  
Damage detection and localization
키워드  
Fatigue life prediction
키워드  
Fiber-reinforced polymer composites
키워드  
Piezoresistive sensors
키워드  
Self-sensing hybrid materials
키워드  
Structural health monitoring
기타저자  
Columbia University Civil Engineering and Engineering Mechanics
기본자료저록  
Dissertations Abstracts International. 86-06B.
전자적 위치 및 접속  
로그인 후 원문을 볼 수 있습니다.

MARC

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■040    ▼aMiAaPQ▼cMiAaPQ
■0820  ▼a621
■1001  ▼aDemo,  Luke  Benjamin.
■24510▼aDamage  Detection,  Damage  Localization,  and  Fatigue  Life  Prediction  for  Large-Area  FRP  Composites
■260    ▼a[Sl]▼bColumbia  University▼c2024
■260  1▼aAnn  Arbor▼bProQuest  Dissertations  &  Theses▼c2024
■300    ▼a152  p
■500    ▼aSource:  Dissertations  Abstracts  International,  Volume:  86-06,  Section:  B.
■500    ▼aAdvisor:  Feng,  Maria  Q.
■5021  ▼aThesis  (Ph.D.)--Columbia  University,  2024.
■520    ▼aIn  this  work,  a  novel  self-sensing  technology  is  introduced  for  fiber-reinforced  polymer  (FRP)  composites,  offering  an  accurate  and  cost-effective  solution  for  damage  detection,  localization,  and  fatigue  life  prediction.  This  dissertation  implements  an  innovative  approach,  transforming  structural  carbon  fiber  tows  into  piezoresistive  sensors  that  enable  real-time  structural  health  monitoring  (SHM)  without  the  need  for  additional  sensor  devices.  The  self-damage  detection  and  memory  (SDDM)  hybrid  composite  material  leverages  the  carbon  fiber  as  a  sensor  network,  with  glass  fiber  providing  electrical  insulation.  Damage  detection  capabilities  are  first  introduced,  demonstrated  by  tensile  testing  that  revealed  two  distinct  loading  peaks  and  a  sharp  nonlinear  increase  in  resistance  at  the  point  of  carbon  fiber  failure,  highlighting  its  capabilities  for  damage  early  warning.  Progressive  impact  tests  further  confirmed  the  material's  ability  to  permanently  record  microdamage,  showcasing  a  self-memory  function  that  could  inform  life-cycle  predictions.Next,  a  practical  sensor  layout  was  developed,  utilizing  carbon  fiber  sensor  tow  branches  connected  in  parallel  each  with  varying  resistances.  This  novel  design  can  monitor  large  areas  while  minimizing  the  number  of  connections  required  to  the  DAQ  circuit,  significantly  reducing  manufacturing  costs  and  complexities.  Impact  tests  on  carbon  and  glass  fiber-reinforced  composites  validated  the  system's  ability  to  detect  and  precisely  locate  damage,  with  less  than  three  percent  error  between  the  measured  resistance  and  predicted  damage  location.  These  results  highlight  the  effectiveness  of  the  proposed  damage  localization  framework,  offering  an  efficient  SHM  solution  for  large-area  composite  structures. Lastly,  this  dissertation  introduces  a  low-cost,  real-time  fatigue  life  prediction  system  that  leverages  the  piezoresistive  cumulative  damage  behavior  of  carbon  fiber  sensor  tows.  A  Bidirectional  Long  Short-Term  Memory  (LSTM)  neural  network  was  implemented  to  predict  fatigue  life  based  solely  on  resistance  time-history,  with  no  need  for  explicit  stress  inputs.  Fatigue  tests  conducted  across  various  stress  amplitudes  were  used  to  train  and  evaluate  a  LSTM  model,  with  results  indicating  the  model's  ability  to  accurately  predict  remaining  life.  Moreover,  testing  results  showed  a  sharp  increase  in  resistance  before  failure,  demonstrating  the  carbon  fiber  sensor  tow's  damage  early  warning  capabilities  for  both  cyclic  and  quasistatic  monotonic  loading.  This  system  presents  a  promising,  cost-effective  SHM  method  that  not  only  ensures  structural  safety  but  also  extends  the  service  life  of  FRP  composites  through  accurate  fatigue  life  prediction.
■590    ▼aSchool  code:  0054.
■650  4▼aMechanical  engineering
■650  4▼aMaterials  science
■650  4▼aEngineering
■653    ▼aDamage  detection  and  localization
■653    ▼aFatigue  life  prediction
■653    ▼aFiber-reinforced  polymer  composites
■653    ▼aPiezoresistive  sensors
■653    ▼aSelf-sensing  hybrid  materials
■653    ▼aStructural  health  monitoring
■690    ▼a0548
■690    ▼a0794
■690    ▼a0543
■690    ▼a0537
■71020▼aColumbia  University▼bCivil  Engineering  and  Engineering  Mechanics.
■7730  ▼tDissertations  Abstracts  International▼g86-06B.
■790    ▼a0054
■791    ▼aPh.D.
■792    ▼a2024
■793    ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17164722▼nKERIS▼z이  자료의  원문은  한국교육학술정보원에서  제공합니다.

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