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.…
Autor*innen: | H. Poisel, M. Luber, O. Ziemann, J. Diez, M. Bloos, A. Bachmann, Marcus Schukar |
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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 |