Composite structure resin cure monitoring apparatus using an opt

Details Composite structure resin cure monitoring apparatus using an opt Composite structure resin cure monitoring apparatus using an opt

1995-11-21

1998-06-23

Snay, Jeffrey

Chemical apparatus and process disinfecting, deodorizing, preser

Analyzer, structured indicator, or manipulative laboratory...

Means for analyzing liquid or solid sample

25022714, 25022718, 356 32, G01N 2117

Patent

active

057701555

ABSTRACT:
Resin curing of a composite laminated structure is monitored using an optical fiber 20 having a grating sensor 28 embedded therein. The fiber 20 is surrounded by upper and lower buffer regions 12,14 having a predetermined minimum number of layers 30 (or thickness) with uni-directional reinforcing filaments 32 and resin 34 therebetween. When the filaments 32 are oriented perpendicular to the longitudinal axis of the fiber 20, the buffer regions 12,14 allow the sensor 28 to exhibit maximum sensitivity to detection of the minimum resin viscosity and the gelation point (i.e., the onset of a rapid crosslinking rate) of the resin 34. The buffer regions 12,14 also have a minimum thickness which serve to isolate the sensor 28 from interfering stresses from arbitrarily angled filaments 32 in layers 30 of outer regions 10,16 which surround the buffer regions 12,14.

REFERENCES:
patent: 4761073 (1988-08-01), Meltz et al.
patent: 4798954 (1989-01-01), Stevenson
patent: 4806012 (1989-02-01), Meltz et al.
patent: 4827121 (1989-05-01), Vidrine, Jr. et al.
patent: 4970385 (1990-11-01), Tatsuno et al.
patent: 4996419 (1991-02-01), Morey
patent: 5142151 (1992-08-01), Varnell et al.
patent: 5158720 (1992-10-01), Levy
patent: 5164587 (1992-11-01), Caimi et al.
patent: 5265475 (1993-11-01), Messinger et al.
patent: 5384079 (1995-01-01), Bur et al.
patent: 5399854 (1995-03-01), Dunphy et al.
patent: 5401956 (1995-03-01), Dunphy et al.
patent: 5426297 (1995-06-01), Dunphy et al.
patent: 5519211 (1996-05-01), Bur et al.
Afromowitz, Martin A., "Fiber Optic Polymer Cure Sensor." Journal of Lightwave Technology, vol. 6, No. 10, Oct. 1988, pp. 1591-1594.
Claus, R. O. et al., "Embedded Optical Fiber Sensors for Materials Evaluation." Journal of Nondestructive Evaluation, vol. 8, No. 2, (Jun. 8, 1989), pp. 135-145.
Dunphy J. R. et al., "Multi-function, distributed optical fiber sensor for composite cure and response monitoring." SPIE vol. 1370 Fiber Optic Smart Structures and Skins III (1990), pp. 116-118.
Levy, R. L. "A New Fiber-Optic Sensor for Monitoring the Composite-Curing Process." Polymeric Materials Science and Engineering, vol. 54, (1984), pp. 321-324.

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