Temperature profiles of a carbon fiber epoxy composite disk heated in a single modecontrolled multimode cylindrical resonant cavity with 2.45 GHz microwave energy indicate that microwave energy is limited in its penetration into the disk, from the top and the perimeter a skin effect. Initial heating profiles allow an approximate determination of the penetration depth. In the steady state, the temperature gradients indicate that the heat flow was primarily by thermal conduction from the perimeter of the disk, toward the center and out the upper and lower surfaces.
This article is from 'Ceramic Transactions. Volume 21. Proceedings of the Symposium on Microwave Theory and Application in Materials Processing Annual Meeting of the American Ceramic Society (23rd) Held in Cincinnati, Ohio on April 29 - May 3, 1991,' AD-A253 631, p547-556.