Optical fiber sensing technique for edge-induced and internal delamination detection in composites

A novel technique for effective detection of edge-induced and local internal delamination caused by cyclic loading of composite materials is proposed. This scheme employs the highly sensitive extrinsic Fabry-Perot interferometric optical fiber-based sensor for detecting discontinuities along the com...

Full description

Saved in:
Bibliographic Details
Published in:Smart materials and structures 1995-09, Vol.4 (3), p.164-169
Main Authors: Bhatia, V, Schmid, C A, Murphy, K A, Claus, R O, Tran, T A, Greene, J A, Miller, M S
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:A novel technique for effective detection of edge-induced and local internal delamination caused by cyclic loading of composite materials is proposed. This scheme employs the highly sensitive extrinsic Fabry-Perot interferometric optical fiber-based sensor for detecting discontinuities along the composite transverse axis. Sensors in surface-mounted and completely embedded configurations provide real-time, on-line information about damage initiation and propagation within the composite. This method is extended to monitoring delamination between pairs of off-axis plies by employing pathsmatching multiplexing of conventional EFPI sensors in a white light interferometry configuration. Such multiple-sensor-element in situ monitoring may increase the probability of detection of flaws of critical size that may lead to premature structural failure. (Author)
ISSN:0964-1726
1361-665X
DOI:10.1088/0964-1726/4/3/002