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Applications of a POF elongation sensor

  • The principle of a low-cost but nevertheless powerful POF elongation sensor has already been described in the recent years [1, 2, 3]. The measurement of the phase shift of a signal of a modulated light source which is coupled into two different POF, one being stretched, yields information of the elongation with a resolution of up to 10-5. Analyzing the temporal or frequency behaviour of the signal gives additional information. Since the phase measurement can allow for frequencies up to 2 GHz, the vibrational analysis of macroscopic structures can be extended to several kHz very easily, limited mainly by the signal processing electronics. Thus we processed data of a sensing system applied to a 39 m rotor blade of a wind power generator and could resolve the various frequencies related to different exciting conditions, e.g. the appearance of a beat signal when the blade was externally excited by a mechanical system with a frequency close but not identical to the Eigen frequency of theThe principle of a low-cost but nevertheless powerful POF elongation sensor has already been described in the recent years [1, 2, 3]. The measurement of the phase shift of a signal of a modulated light source which is coupled into two different POF, one being stretched, yields information of the elongation with a resolution of up to 10-5. Analyzing the temporal or frequency behaviour of the signal gives additional information. Since the phase measurement can allow for frequencies up to 2 GHz, the vibrational analysis of macroscopic structures can be extended to several kHz very easily, limited mainly by the signal processing electronics. Thus we processed data of a sensing system applied to a 39 m rotor blade of a wind power generator and could resolve the various frequencies related to different exciting conditions, e.g. the appearance of a beat signal when the blade was externally excited by a mechanical system with a frequency close but not identical to the Eigen frequency of the blade.zeige mehrzeige weniger

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Metadaten
Autor*innen:H. Poisel, M. Luber, O. Ziemann, J. Diez, M. Bloos, A. Bachmann, Marcus Schukar
Dokumenttyp:Beitrag zu einem Tagungsband
Veröffentlichungsform:Graue Literatur
Sprache:Englisch
Titel des übergeordneten Werkes (Englisch):POF 2009 - 18th International conference on plastic optical fibers (Proceedings)
Jahr der Erstveröffentlichung:2009
Verlagsort:Sydney, Australia
Ausgabe/Heft:Session 1 (S1_25)
Erste Seite:1
Letzte Seite:5
Freie Schlagwörter:Faser-Integration; Fasersensorik; Faserverbundwerkstoffe; Optische Polymerfasern (POF); Phasenmesstechnik; Structural health monitoring
Veranstaltung:POF 2009 - 18th International conference on plastic optical fibers
Veranstaltungsort:Sydney, Australia
Beginndatum der Veranstaltung:2009-09-07
Enddatum der Veranstaltung:2009-09-11
Verfügbarkeit des Dokuments:Physisches Exemplar in der Bibliothek der BAM vorhanden ("Hardcopy Access")
Bibliotheksstandort:Sonderstandort: Publica-Schrank
Datum der Freischaltung:19.02.2016
Referierte Publikation:Nein
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