Measurement of Surface Strains from a Composite Hydrofoil using Fibre Bragg Grating Sensing Arrays

Abstract

This report details a methodology for the permanent attachment of fibre optic strain gauge (Bragg grating) arrays to the surface of a composite hydrofoil and reports on an experiment to measure surface strains from the hydrofoil under static and fatigue loading conditions. The strain data from the optical gauges is compared to measurements from electrical resistance strain gauges nearby and to model predictions and an assessment is made on the suitability of this technique for strain-mapping in a service environment.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 2015
Accession Number
ADA626158

Entities

People

  • Andrew Phillips
  • Asintha Nanayakkara
  • Claire Davis
  • Patrick Norman

Organizations

  • Defence Science and Technology Group

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Sensors
  • Space

DTIC Thesaurus Topics

  • Advanced Materials
  • Bragg Gratings
  • Composite Materials
  • Control Systems
  • Department Of Defense
  • Electrical Resistance
  • Engineering
  • Fiber Bragg Gratings
  • Fibers
  • Geometry
  • Instrumentation
  • Materials
  • Measurement
  • Mechanical Engineering
  • Optical Fibers
  • Propellers
  • Strain Gages

Fields of Study

  • Physics

Readers

  • Marine Propulsion Engineering and Naval Architecture
  • Mechanical Engineering/Mechanics of Materials.
  • Optical Fiber Sensing and Electromagnetic Propagation.