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Information Extraction and Data Fusion for Nondestructive Evaluation of Concrete Bridge Decks
Information Extraction and Data Fusion for Nondestructive Evaluation of Concrete Bridge Decks
Detailed Information
- 자료유형
- 학위논문 서양
- 최종처리일시
- 20260202105536
- ISBN
- 9798263389741
- DDC
- 620
- 저자명
- Xie, Zhenhua.
- 서명/저자
- Information Extraction and Data Fusion for Nondestructive Evaluation of Concrete Bridge Decks
- 발행사항
- [Sl] : Georgia Institute of Technology, 2021
- 발행사항
- Ann Arbor : ProQuest Dissertations & Theses, 2021
- 형태사항
- 117 p
- 주기사항
- Source: Dissertations Abstracts International, Volume: 87-05, Section: B.
- 학위논문주기
- Thesis (Ph.D.)--Georgia Institute of Technology, 2021.
- 초록/해제
- 요약The infrastructure management agencies dedicate a sizable portion of their construction budget, in excess of $2 billion annually, to maintain and rehabilitate concrete bridge decks. Two widely adopted nondestructive evaluation methods-impact echo (IE) and ground penetrating radar (GRP)-have been recognized as effective investigation tool for evaluating reinforced concrete (RC) bridge decks. This dissertation attempts to improve and extend the application of these two methods in the field of concrete condition evaluation. At the beginning, it introduces the background and motivation of this dissertation. It reviews the literature on IE and GPR and identifies a few research gaps. To bridge these gaps, it further lays out several relevant research questions and address these questions in three chapters respectively. Chapter II proposes an ensemble empirical mode decomposition (EEMD) approach to decompose the IE testing data into different spectral composition for defect signal extraction. The EEMD approach overcomes the challenge of extracting reflected P-wave from the impact-echo signal that may contain strong surface wave. The results show that the high frequency resonance mode is easier to be extracted than the low frequency resonance mode from the IE signal. To realize direct visualization of internal defects of concrete structures for nondestructive evaluation, Chapter III develops an automated data fusion and visualization process based on impact-echo testing with source-receiver arrays. Both the simulation and experimental results demonstrate that the automated data fusion and visualization process can effectively extract delamination regions from the impact-echo test data. Chapter IV adopts the \uD835\uDC53-\uD835\uDC65 variational mode decomposition (VMD) method to remove the direct wave clutter of GPR Data from RC bridge decks. The \uD835\uDC53-\uD835\uDC65 VMD method can effectively remove the stripe-like interference waves, which are the main problem hindering the discrimination of the target of interest. As a result, this method can separate the useful rebar reflection signal from direct wave event. It also compares the performance of \uD835\uDC53-\uD835\uDC65 VMD method with two other approaches, including average background subtraction and F-K filter with dip relaxation. The superiority and effectiveness of proposed method is demonstrated in simulation, experiment, and field test environments over the other two methods.
- 일반주제명
- Receivers & amplifiers
- 일반주제명
- Software
- 일반주제명
- Wavelet transforms
- 일반주제명
- Defects
- 일반주제명
- Investigations
- 일반주제명
- Fourier transforms
- 일반주제명
- Concrete
- 일반주제명
- Concrete slabs
- 일반주제명
- Nondestructive testing
- 일반주제명
- Spectrum allocation
- 일반주제명
- Seismic engineering
- 일반주제명
- Reinforced concrete
- 일반주제명
- Radar
- 일반주제명
- Visualization
- 일반주제명
- Corrosion
- 일반주제명
- Electrical engineering
- 일반주제명
- Industrial engineering
- 일반주제명
- Mathematics
- 일반주제명
- Optics
- 일반주제명
- Electromagnetics
- 기본자료저록
- Dissertations Abstracts International. 87-05B.
- 전자적 위치 및 접속
- 로그인 후 원문을 볼 수 있습니다.
MARC
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■020 ▼a9798263389741
■035 ▼a(MiAaPQ)AAI32314715
■035 ▼a(MiAaPQ)GeorgiaTech70017
■040 ▼aMiAaPQ▼cMiAaPQ
■0820 ▼a620
■1001 ▼aXie, Zhenhua.
■24510▼aInformation Extraction and Data Fusion for Nondestructive Evaluation of Concrete Bridge Decks
■260 ▼a[Sl]▼bGeorgia Institute of Technology▼c2021
■260 1▼aAnn Arbor▼bProQuest Dissertations & Theses▼c2021
■300 ▼a117 p
■500 ▼aSource: Dissertations Abstracts International, Volume: 87-05, Section: B.
■5021 ▼aThesis (Ph.D.)--Georgia Institute of Technology, 2021.
■520 ▼aThe infrastructure management agencies dedicate a sizable portion of their construction budget, in excess of $2 billion annually, to maintain and rehabilitate concrete bridge decks. Two widely adopted nondestructive evaluation methods-impact echo (IE) and ground penetrating radar (GRP)-have been recognized as effective investigation tool for evaluating reinforced concrete (RC) bridge decks. This dissertation attempts to improve and extend the application of these two methods in the field of concrete condition evaluation. At the beginning, it introduces the background and motivation of this dissertation. It reviews the literature on IE and GPR and identifies a few research gaps. To bridge these gaps, it further lays out several relevant research questions and address these questions in three chapters respectively. Chapter II proposes an ensemble empirical mode decomposition (EEMD) approach to decompose the IE testing data into different spectral composition for defect signal extraction. The EEMD approach overcomes the challenge of extracting reflected P-wave from the impact-echo signal that may contain strong surface wave. The results show that the high frequency resonance mode is easier to be extracted than the low frequency resonance mode from the IE signal. To realize direct visualization of internal defects of concrete structures for nondestructive evaluation, Chapter III develops an automated data fusion and visualization process based on impact-echo testing with source-receiver arrays. Both the simulation and experimental results demonstrate that the automated data fusion and visualization process can effectively extract delamination regions from the impact-echo test data. Chapter IV adopts the \uD835\uDC53-\uD835\uDC65 variational mode decomposition (VMD) method to remove the direct wave clutter of GPR Data from RC bridge decks. The \uD835\uDC53-\uD835\uDC65 VMD method can effectively remove the stripe-like interference waves, which are the main problem hindering the discrimination of the target of interest. As a result, this method can separate the useful rebar reflection signal from direct wave event. It also compares the performance of \uD835\uDC53-\uD835\uDC65 VMD method with two other approaches, including average background subtraction and F-K filter with dip relaxation. The superiority and effectiveness of proposed method is demonstrated in simulation, experiment, and field test environments over the other two methods.
■590 ▼aSchool code: 0078.
■650 4▼aReceivers & amplifiers
■650 4▼aSoftware
■650 4▼aWavelet transforms
■650 4▼aDefects
■650 4▼aInvestigations
■650 4▼aFourier transforms
■650 4▼aConcrete
■650 4▼aConcrete slabs
■650 4▼aNondestructive testing
■650 4▼aSpectrum allocation
■650 4▼aSeismic engineering
■650 4▼aReinforced concrete
■650 4▼aRadar
■650 4▼aVisualization
■650 4▼aCorrosion
■650 4▼aElectrical engineering
■650 4▼aIndustrial engineering
■650 4▼aMathematics
■650 4▼aOptics
■650 4▼aElectromagnetics
■690 ▼a0544
■690 ▼a0546
■690 ▼a0405
■690 ▼a0752
■690 ▼a0607
■71020▼aGeorgia Institute of Technology.
■7730 ▼tDissertations Abstracts International▼g87-05B.
■790 ▼a0078
■791 ▼aPh.D.
■792 ▼a2021
■793 ▼aEnglish
■85640▼uhttp://www.riss.kr/pdu/ddodLink.do?id=T17360492▼nKERIS▼z이 자료의 원문은 한국교육학술정보원에서 제공합니다.
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