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Modelling and simulation of a fibre Bragg grating strain sensor based on a magnetostrictive actuator principle

  • A new concept for the self-diagnosis of embedded fiber Bragg grating (FBG) strain sensors was developed, simulated and experimentally tested. This concept is based on a magnetostrictive metallic layer directly coated on the fibre cladding over the grating segment of the FBG sensor, so that an on-demand external magnetic field in a millitesla scale can produce a controllable artificial strain as an indication signal for the remote optical interrogator. The relationship between the pre-defined magnetic field and its induced Bragg wavelength shift characterizes this validation concept. Any deviation of the local bonding state of the interfaces from the initial or/and any change of shear strain transferring mechanism from composite matrix to the optical fibre core will result in alterations in this sensitive relationship, and thus triggers an immediate alert for a further inspection. The finite element method is used to simulate the strain of this configuration as result of differentA new concept for the self-diagnosis of embedded fiber Bragg grating (FBG) strain sensors was developed, simulated and experimentally tested. This concept is based on a magnetostrictive metallic layer directly coated on the fibre cladding over the grating segment of the FBG sensor, so that an on-demand external magnetic field in a millitesla scale can produce a controllable artificial strain as an indication signal for the remote optical interrogator. The relationship between the pre-defined magnetic field and its induced Bragg wavelength shift characterizes this validation concept. Any deviation of the local bonding state of the interfaces from the initial or/and any change of shear strain transferring mechanism from composite matrix to the optical fibre core will result in alterations in this sensitive relationship, and thus triggers an immediate alert for a further inspection. The finite element method is used to simulate the strain of this configuration as result of different values of the magnetic field in order to optimize the geometrical sensor parameters. The simulations are verified by experiments results. © (2016) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.zeige mehrzeige weniger

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  • Optical Sensing and Detection IV.pdf
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Metadaten
Autoren/innen:Vivien Schukar, Xin Gong, Detlef Hofmann, Frank Basedau, Enrico Köppe, Matthias Bartholmai, Anja Westphal, Mario Sahre, Uwe Beck
Persönliche Herausgeber/innen:F. Berghmans, A. G. Mignani
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Graue Literatur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):Optical Sensing and Detection IV
Jahr der Erstveröffentlichung:2016
Organisationseinheit der BAM:6 Materialschutz und Oberflächentechnik
6 Materialschutz und Oberflächentechnik / 6.7 Oberflächenmodifizierung und -messtechnik
8 Zerstörungsfreie Prüfung
8 Zerstörungsfreie Prüfung / 8.1 Sensorik, mess- und prüftechnische Verfahren
8 Zerstörungsfreie Prüfung / 8.6 Faseroptische Sensorik
Herausgeber (Institution):SPIE - the international society for optics and photonics
Verlag:SPIE Digital Library
Jahrgang/Band:9899
Erste Seite:9899-39
DDC-Klassifikation:Naturwissenschaften und Mathematik / Chemie / Analytische Chemie
Freie Schlagwörter:Actuators; Fiber Bragg gratings; Finite element methods; Modeling and simulation
Themenfelder/Aktivitätsfelder der BAM:Analytical Sciences
Analytical Sciences / Sensorik
Veranstaltung:Optical Sensing and Detection IV
Veranstaltungsort:Brüssel, Belgium
Beginndatum der Veranstaltung:03.04.2016
Enddatum der Veranstaltung:07.04.2016
DOI:https://doi.org/10.1117/12.2224728
URL:http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=Alerting&SrcApp=Alerting&DestApp=WOS&DestLinkType=FullRecord;UT=WOS:000387732400030
ISSN:0277-786X
ISSN:1996-756X
ISBN:9781510601444
Verfügbarkeit des Volltexts:Volltext-PDF im Netzwerk der BAM verfügbar ("Closed Access")
Datum der Freischaltung:09.12.2016
Referierte Publikation:Ja
Datum der Eintragung als referierte Publikation:09.12.2016