FIBER OPTIC THERMOGRAPHIC DETECTION OF FLAWS IN COMPOSITES | Zendy

Meng-Chou Wu | Zendy; William P. Winfree | Zendy; Donald O. Thompson | Zendy; Dale E. Chimenti | Zendy

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FIBER OPTIC THERMOGRAPHIC DETECTION OF FLAWS IN COMPOSITES

Author(s) -

Meng-Chou Wu,

William P. Winfree,

Donald O. Thompson,

Dale E. Chimenti

Publication year - 2010

Publication title -

aip conference proceedings

Language(s) - English

Resource type - Conference proceedings

SCImago Journal Rank - 0.177

H-Index - 75

eISSN - 1551-7616

pISSN - 0094-243X

DOI - 10.1063/1.3362365

Subject(s) - materials science , fiber bragg grating , thermography , composite material , optical fiber , thermal , composite number , temperature measurement , heat flux , optics , infrared , heat transfer , meteorology , physics , quantum mechanics , thermodynamics

Optical fibers with multiple Bragg gratings bonded to surfaces of structures were used for thermographic detection of subsurface defects in structures. The investigated structures included a 10‐ply composite specimen with subsurface delaminations of various sizes and depths. Both during and following the application of a thermal heat flux to the surface, the individual Bragg grating sensors measured the temporal and spatial temperature variations. The obtained data were analyzed with thermal modeling to reveal particular characteristics of the interested areas. These results were found to be consistent with the simulation results.

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