Publication:
Fiber-optic flexural disk accelerometer

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Authors
Olcott, Joanne E.
Subjects
Fiber optic
Fiber-optic
Flexural disk accelerometer
Flexural disk
Accelerometer
Michelson interferometer
Interior spindle
Accelerometer sensitivity
Advisors
Brown, David A.
Garrett, Steven L.
Date of Issue
1991-09
Date
September 1991
Publisher
Monterey, California. Naval Postgraduate School
Language
en_US
Abstract
The fabrication and calibration of a fiber-optic flexural disk accelerometer is discussed in this thesis. The accelerometer is comprised of a cylindrical body with thin, flexible end plates (or disks) and an interior spindle coupling the disks together ensuring proper phasing. The sensing mechanism is comprised of single mode optical fiber wound into flat coils and epoxied on to the inside faces of the disks, forming the legs of a Michelson interferometer. The use of both legs of this fiber-optic interferometer as sensing elements provides a "push-pull" enhancement and effectively doubles the accelerometer's response while providing common-mode rejection of pressure and temperature variations. The acceleration sensitivity for a sensor consisting of two 1.8" by 1/25" disks is delta0/a(6) = 49 radians/g with a resonance frequency of 2450 Hz. the fractional phase change per unit force is delta0/0ma(c) = 5.5 x 10(-6) N(-1).
Type
Thesis
Description
Series/Report No
Department
Antisubmarine Warfare Academic Group
Organization
Naval Postgraduate School (U.S.)
Identifiers
NPS Report Number
Sponsors
Funder
Format
85 p.
Citation
Distribution Statement
Approved for public release; distribution is unlimited.
Rights
This publication is a work of the U.S. Government as defined in Title 17, United States Code, Section 101. Copyright protection is not available for this work in the United States.
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