Fiber-Optic Flexural Disk Accelerometer

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.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1991
Accession Number
ADA246203

Entities

People

  • Joanne E. Olcott

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Sensors

DTIC Thesaurus Topics

  • Accelerometers
  • Acoustics
  • Chemical Reactions
  • Detectors
  • Fabrication
  • Fibers
  • Frequency
  • Instrumentation
  • Interferometers
  • Materials
  • Materials Processing
  • Materials Testing
  • Measurement
  • Michelson Interferometers
  • Optical Fibers
  • Physical Properties
  • Piezoelectric Crystals

Fields of Study

  • Physics

Readers

  • Electrical Engineering
  • Mechanical Engineering/Mechanics of Materials.
  • Optical Fiber Sensing and Electromagnetic Propagation.