CMI develops and produces a variety of core topologies, including its proprietary
core designs (Microtruss™) and innovatively formed honeycombs and prismatic
structures. Unique core designs are achieved by applying common metal working processes
to commercially available wrought materials such as plate, sheet, tube, bar and wire.
Well-understood metal working and joining processes turn these commodities into
multi-functional cellular materials that can be made with densities from more than 30%
to less than 1% of the density of the parent alloy. These materials are available in
a variety of cell sizes, relative densities, truss cross sections, and
alloys, which makes them easily tailored to a variety
of applications.
Periodic cellular material cores are based on a regularly repeating geometric unit,
or cell, like a cube (square honeycomb) or pyramid (Pyramidal Microtruss™).
This technology allows for consistently spaced open-cells, which facilitate the
addition of materials like magnets, cables, or ceramics, for example and therefore
increase functionality. The open cells also permit fluid flow that can achieve more
efficient thermal management.
Pyramidal, Tetrahedral, and Kagomé Microtruss™ are all created by bending
perforated sheets and result in a 3-D array of trusses. Hollow Tube and Latticed
Microtruss™ are laminate materials formed by either woven or individual tubular
elements.
