Induction heating of polymer matrix composites in an autoclave

Details Induction heating of polymer matrix composites in an autoclave Induction heating of polymer matrix composites in an autoclave

1993-11-29

1995-05-02

Leung, Philip H.

Electric heating

Inductive heating

With workpiece support

219649, 219674, 219635, 219602, 264 27, H05B 610

Patent

active

054121850

ABSTRACT:
Induction heating is utilized to heat polymer matrix composites containing electrically conductive fibers. This is accomplished with an apparatus having a mandrel for supporting a composite workpiece and a helical induction coil disposed around the mandrel. The mandrel, workpiece and induction coil are disposed in an autoclave. The mandrel is a hollow, porous member having a port formed therein which is connected to a vacuum. A vacuum bag is hermetically sealed on the mandrel so as to define an enclosure over the workpiece. A power source is connected to the induction coil and, when activated, causes the coil to generate an oscillating magnetic field lying along the longitudinal axis of the mandrel. The magnetic field induces heat-generating eddy currents in the fibers of the workpiece which are oriented orthogonally to the magnetic field.

REFERENCES:
patent: 2151874 (1939-03-01), Simons
patent: 2341739 (1944-02-01), Olt
patent: 2930098 (1960-03-01), Emels
patent: 3180917 (1965-04-01), Morrison et al.
patent: 3303258 (1967-02-01), Junker
patent: 3350494 (1967-10-01), Kunitsky et al.
patent: 3860737 (1975-01-01), Moscatello
patent: 4704252 (1987-11-01), Pfaffmann

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