Fiber-optic flexural disk accelerometer
Olcott, Joanne E.
Brown, David A.
Garrett, Steven L.
MetadataShow full item record
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).
RightsThis 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.
Showing items related by title, author, creator and subject.
Lee, Chun Ming (Monterey California. Naval Postgraduate School, 2004-12);MEMS technology is rapidly taking an important role in today's and future military systems. MEMS are able to lower the device size from millimeter to micrometer and maintain and sometimes surpass the performance of ...
Young, Jonathan C. (Monterey California. Naval Postgraduate School, 2006);The primary objective of this these was to study the feasibility of using a MEMS accelerometer to monitor vibration signatures of a machine to determine if the machine is operating properly. The secondary objective was ...
Colbert, David B. (Monterey, California. Naval Postgraduate School, 2010-09);An intercomparison of Datawell accelerometer buoys, Datawell GPS buoys, and prototype GPS buoys was conducted to determine the viability of using off-the-shelf GPS receivers to measure ocean surface waves. In the experiment, ...