Abstract: Sections of sandwich panel structure have corrugated cores which may be formed from folded sheets or plates, the fold lines of each such section forming an oblique angle with the edges of the panel section. A composite panel may be formed from a plurality of such panel sections which join together along pairs of edges thereof, a shear plate being placed along such edges to extend between the panel surfaces to provide structural continuity between the panel sections.

Abstract: The core of a sandwich panel is formed with projecting nodes, the faces of the nodes being bonded to the face sheets of the panel. The node faces have the central portions thereof excised such that the remaining portion of these faces form flanges. These flanges are bent away from the center plane of the core and are shaped for optimum attachment to the curved panel face sheets without the need for crippling or deforming the node body and so that they enable the formation of a good bonded or brazed joint between the node faces and the face sheets.