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    Electrical Resistance and Acoustic Emission Measurements for Monitoring the Structural Behavior of CFRP Laminate

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    Thesis_wei.pdf
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    2.168Mb
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    PDF
    Description:
    Zhou, Wei Final Thesis
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    Type
    Thesis
    Authors
    Zhou, Wei cc
    Advisors
    Lubineau, Gilles cc
    Committee members
    Mulle, Matthieu
    Younis, Mohammad I. cc
    Program
    Mechanical Engineering
    KAUST Department
    Physical Science and Engineering (PSE) Division
    Date
    2015-07-12
    Embargo End Date
    2015-07-14
    Permanent link to this record
    http://hdl.handle.net/10754/565639
    
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    Show full item record
    Access Restrictions
    At the time of archiving, the student author of this thesis opted to temporarily restrict access to it. The full text of this thesis became available to the public after the expiration of the embargo on 2015-07-14.
    Abstract
    Electrical resistance and acoustic emission (AE) measurement are jointly used to monitor the degradation in CFRP laminates subjected to tensile tests. The objective of this thesis is to perform a synergertic analysis between a passive and an active methods to better access how these perform when used for Structural Health Moni- toring (SHM). Laminates with three different stacking sequences: [0]4, [02/902]s and [+45/ − 45]2s are subjected to monotonic and cyclic tensile tests. In each laminate, we carefully investigate which mechanisms of degradation can or cannot be detect- ed by each technique. It is shown that most often, that acoustic emission signals start before any electrical detection is possible. This is is explained based on the redundance of the electrical network that makes it less sensitive to localized damages. Based on in depth study of AE signals clustering, a new classification is proposed to recognize the different damage mechanims based on only two parameters: the RA (rise time/amplitude) and the duration of the signal.
    Citation
    Zhou, W. (2015). Electrical Resistance and Acoustic Emission Measurements for Monitoring the Structural Behavior of CFRP Laminate. KAUST Research Repository. https://doi.org/10.25781/KAUST-A8U1N
    DOI
    10.25781/KAUST-A8U1N
    ae974a485f413a2113503eed53cd6c53
    10.25781/KAUST-A8U1N
    Scopus Count
    Collections
    MS Theses; Physical Science and Engineering (PSE) Division; Mechanical Engineering Program

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