Experimental Mechanics

, Volume 31, Issue 4, pp 360–365

Determination of fracture parameters using embedded fiber-optic sensors

  • N. Narendran
  • A. Shukla
  • S. V. Letcher

DOI: 10.1007/BF02325994

Cite this article as:
Narendran, N., Shukla, A. & Letcher, S.V. Experimental Mechanics (1991) 31: 360. doi:10.1007/BF02325994


The applicability of embedded fiber-optic sensors for the determination of fracture parameters is demonstrated. A Mach-Zehnder interferometric setup is used and mode-1 stress-intensity factors are obtained by embedding single-mode fibers in single-edge-notched specimens fabricated from Plexiglas. Optical fibers are embedded in-plane to measure axial strains at various depths and also in the transverse direction to measure the transverse strains, from which stress-intensity factors are determined. In both cases the experimental results compare well with the theoretical predictions.

Copyright information

© Society for Experimental Mechanics, Inc. 1991

Authors and Affiliations

  • N. Narendran
    • 1
  • A. Shukla
    • 2
  • S. V. Letcher
    • 3
  1. 1.Mechanical Technology IncorporatedLatham
  2. 2.Dynamic Photomechanics Laboratory, Department of Mechanical EngineeringUniversity of Rhode Island Rhode IslandKingston
  3. 3.Department of PhysicsUniversity of Rhode IslandKingston