TM 1-1500-204-23-11
Figure 4-13. Honeycomb Core Orientation and Nomenclature
Figure 4-14. Sample Vendor Callouts for Honeycomb Core
(1) Hexagonal honeycomb core ("hex-core") is
process does not require expansion and is often used
the most common geometry available. This product
to produce higher density hexagonal honeycombs.
is primarily made by strip gluing sheets of material
together into a block and slicing the block into the
(2) Over expanded honeycomb core ("OX-
desired sheet thickness. The block is then mechani-
core") is extended in the W direction to create rect-
cally expanded into a sheet of honeycomb. An alter-
angular, rather than hexagonal, cells. This cell shape
nate method of hexagonal honeycomb manufacturing
facilitates forming to contours in the L direction.
is the corrugation process. In this method, adhesive
Shear properties are increased in the L direction
is applied to corrugated sheets of material which are
but decreased in the W direction when compared to
then stacked into a block and cured. The corrugation
hexagonal honeycomb (see igure 4-15).
