ON THE DEVELOPMENT OF CONVENTIONAL AND MICRO LATTICE CELLULAR METALS AS CORE MATERIALS IN AEROSPACE SANDWICH CONSTRUCTION

摘要

The paper introduces some conventional and innovative cellular metals for use as core materials in aerospace sandwich construction. The conventional manufacturing route covers hollow spheres embedded in a resin. The innovative manufacturing routes covers brazed Wadley type macro lattice structures and selectively laser melted micro lattice structures. Manufacturing routes are described as well as preliminary characterising tests using block compression. In general, none of the materials are competitive with aluminium honeycomb on specific stiffness but the micro lattice structure, in Ti 6 4 alloy, is competitive with aluminium honeycomb for specific strength.