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

Handle URI:
http://hdl.handle.net/10754/565639
Title:
Electrical Resistance and Acoustic Emission Measurements for Monitoring the Structural Behavior of CFRP Laminate
Authors:
Zhou, Wei ( 0000-0003-1226-8955 )
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.
Advisors:
Lubineau, Gilles ( 0000-0002-7370-6093 )
Committee Member:
Mulle, Matthieu; Younis, Mohammad I. ( 0000-0002-9491-1838 )
KAUST Department:
Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program
Program:
Mechanical Engineering
Issue Date:
12-Jul-2015
Type:
Thesis
Appears in Collections:
Theses; Physical Sciences and Engineering (PSE) Division; Mechanical Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.advisorLubineau, Gillesen
dc.contributor.authorZhou, Weien
dc.date.accessioned2015-08-05T12:54:07Zen
dc.date.available2015-08-05T12:54:07Zen
dc.date.issued2015-07-12en
dc.identifier.urihttp://hdl.handle.net/10754/565639en
dc.description.abstractElectrical 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.en
dc.language.isoenen
dc.subjectAcoustic Emissionen
dc.subjectElectrical Resistance Measurmenten
dc.subjectMechanical Testingen
dc.subjectCFRPen
dc.titleElectrical Resistance and Acoustic Emission Measurements for Monitoring the Structural Behavior of CFRP Laminateen
dc.typeThesisen
dc.contributor.departmentPhysical Sciences and Engineering (PSE) Divisionen
dc.contributor.departmentMechanical Engineering Programen
thesis.degree.grantorKing Abdullah University of Science and Technologyen_GB
dc.contributor.committeememberMulle, Matthieuen
dc.contributor.committeememberYounis, Mohammad I.en
thesis.degree.disciplineMechanical Engineeringen
thesis.degree.nameMaster of Scienceen
dc.person.id129070en
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