This Article Full Text (PDF) References Alert me when this article is cited Alert me if a correction is posted Services Email this article to a friend Similar articles in this journal Alert me to new issues of the journal Add to Saved Citations Download to citation manager Request Permissions Request Reprints Add to My Marked Citations Citing Articles Citing Articles via Google Scholar Citing Articles via Scopus Google Scholar Articles by Jin, X. D. Articles by Venkat, V. S. Search for Related Content Social Bookmarking                         What's this?

Simultaneous Measurement of Two Strain Components in Composite Structures Using Embedded Fiber Sensor

Smart Materials and Structures Research Center, Dept. of Mechanical Engineering, University of Maryland, College Park, MD 20742

J. S. Sirkis

Smart Materials and Structures Research Center, Dept. of Mechanical Engineering, University of Maryland, College Park, MD 20742

J. K. Chung

Dept. of Mechanical Engineering, Chosen University, 375 Seosuk-dong, Kwangju, 501-759, Korea

V. S. Venkat

Analytical Services and Materials, Inc., 107 Research Dr., Hampton, VA 23666

This paper uses an in-line fiber etalon (ILFE) cascaded with an in-fiber Bragg grating to simultaneously measure axial and transverse strain components inside a cantilever beam fabricated from a graphite/epoxy composite material. The ILFE and Bragg grating sensor signals are demultiplexed using a variation of coherence division multiplexing, and then demodulated using a Pseudo-Heterodyne scheme. Composite cylinders models are developed that allow the optical measurements to be related to the strains in the host composite material. Experimental results show that both of the measurement errors of the two strain components are approximately 5 uE.

Journal of Composite Materials, Vol. 33, No. 15, 1376-1389 (1999)
DOI: 10.1177/002199839903301501


CiteULike    Complore    Connotea    Del.icio.us    Digg    Reddit    Technorati    Twitter    What's this?