Characterization of Multiple-bend Optical Fiber Extensometer Design for Landslide Sensor
| Main Authors: | Costrada, Aldo Novaznursyah, Deswilan, Sixtinah, Kemal, Badrul Mustafa, Harmadi, Harmadi |
|---|---|
| Format: | Article info application/pdf eJournal |
| Bahasa: | eng |
| Terbitan: |
Universitas Andalas
, 2021
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| Online Access: |
http://jif.fmipa.unand.ac.id/index.php/jif/article/view/402 http://jif.fmipa.unand.ac.id/index.php/jif/article/view/402/223 |
Daftar Isi:
- Design of multiple-bend extensometer based on optical fiber as landslide sensor has been characterized. Multiple-bending characterization has been done by varying the winding number of optical fiber FD-620-10 to obtain the photodiode's effective light intensity. The light intensity in the extensometer was set by varying the laser diode resistance in the range (150 – 250) Ω. The optimum sensitivity of 0.03984 V/cm was obtained for triple winding of optical fiber. The designed optical extensometer is able to monitor the displacement with an error of 0.59%. This result indicates that the designed extensometer is the more bending on optical fiber, the more its sensitivity and the bending loss.