- 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.…
MetadatenAutor*innen: | Vivien Schukar, Xin Gong, Detlef Hofmann, Frank Basedau, Enrico Köppe, Matthias BartholmaiORCiD, Anja Westphal, Mario Sahre, Uwe Beck |
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Persönliche Herausgeber*innen: | F. Berghmans, A. G. Mignani |
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Dokumenttyp: | Beitrag zu einem Tagungsband |
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Veröffentlichungsform: | Graue Literatur |
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Sprache: | Englisch |
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Titel des übergeordneten Werkes (Englisch): | Optical Sensing and Detection IV |
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Jahr der Erstveröffentlichung: | 2016 |
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Herausgeber (Institution): | SPIE - the international society for optics and photonics |
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Verlag: | SPIE Digital Library |
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Jahrgang/Band: | 9899 |
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Erste Seite: | 9899-39 |
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DDC-Klassifikation: | Naturwissenschaften und Mathematik / Chemie / Analytische Chemie |
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Freie Schlagwörter: | Actuators; Fiber Bragg gratings; Finite element methods; Modeling and simulation |
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Veranstaltung: | Optical Sensing and Detection IV |
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Veranstaltungsort: | Brüssel, Belgium |
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Beginndatum der Veranstaltung: | 03.04.2016 |
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Enddatum der Veranstaltung: | 07.04.2016 |
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DOI: | 10.1117/12.2224728 |
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ISSN: | 0277-786X |
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ISSN: | 1996-756X |
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ISBN: | 9781510601444 |
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Verfügbarkeit des Dokuments: | Datei im Netzwerk der BAM verfügbar ("Closed Access") |
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Datum der Freischaltung: | 09.12.2016 |
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Referierte Publikation: | Ja |
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Datum der Eintragung als referierte Publikation: | 09.12.2016 |
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