In situ simultaneous strain and temperature measurement of adaptive composite materials using a fiber Bragg grating based sensor

Cited 0 time in webofscience Cited 0 time in scopus
  • Hit : 373
  • Download : 526
An optical fiber sensor to simultaneously measure strain and temperature was designed and embedded into an adaptive composite laminate which exhibits a shape change upon thermal activation. The sensor is formed by two fiber Bragg gratings, which are written in optical fibers with different core dopants. The two gratings were spliced close to each other and a sensing element resulted with Bragg gratings of similar strain sensitivity but different response to temperature. This is due to the dependence of the fiber thermo-optic coefficient on core dopants and relative concentrations. The sensor was tested on an adaptive composite laminate made of unidirectional Kevlar-epoxy pre-preg plies. Several 150μm diameter pre-strained NiTiCu shape memory alloy wires were embedded in the composite laminate together with one fiber sensor. Simultaneous monitoring of strain and temperature during the curing process and activation in an oven was demonstrated.
Publisher
Society of Photo-Optical Instrumentation Engineers, Bellingham, WA, INTERNATIONAL (1988) (Revue)
Issue Date
2005
Citation

SPIE proceedings series 2005 , vol. 5758, pp. 62-69[Note(s) : X, 488 p., ] [Document : 8 p.] (23 ref.)

ISBN
0-8194-5739-6
URI
http://hdl.handle.net/10203/19467
Appears in Collection
AE-Conference Papers(학술회의논문)
Files in This Item
In situ simultaneous strain and temperature measurement of adaptive composite materials using a fiber Bragg grating based sensor.pdf(225.49 kB)Download

qr_code

  • mendeley

    citeulike


rss_1.0 rss_2.0 atom_1.0