Title
Pendulum-Type Hetero-Core Fiber Optic Accelerometer for Low-Frequency Vibration Monitoring.
Abstract
In this paper, a novel pendulum-type accelerometer based on hetero-core fiber optics has been proposed for structural health monitoring targeting large-scale civil infrastructures. Vibration measurement is a non-destructive method for diagnosing the failure of structures by assessing natural frequencies and other vibration patterns. The hetero-core fiber optic sensor utilized in the proposed accelerometer can serve as a displacement sensor with robustness to temperature changes, in addition to immunity to electromagnetic interference and chemical corrosions. Thus, the hetero-core sensor inside the accelerometer measures applied acceleration by detecting the rotation of an internal pendulum. A series of experiments showed that the hetero-core fiber sensor linearly responded to the rotation angle of the pendulum ranging within (-6 degrees, 4 degrees), and furthermore the proposed accelerometer could reproduce the waveform of input vibration in a frequency band of several Hz order.
Year
DOI
Venue
2018
10.3390/s18082528
SENSORS
Keywords
Field
DocType
structural health monitoring,fiber optic sensor,accelerometer,hetero-core,low-frequency vibration measurement
Optical fiber,Low frequency,Fiber optic sensor,Structural health monitoring,Accelerometer,Electronic engineering,Engineering,Acoustics,Vibration,Pendulum
Journal
Volume
Issue
Citations 
18
8.0
0
PageRank 
References 
Authors
0.34
1
4
Name
Order
Citations
PageRank
Hiroshi Yamazaki173.28
Ichiro Kurose200.34
Michiko Nishiyama3227.59
Kazuhiro Watanabe4248.31