Abstract: A perforated metal honeycomb structure is described. The perforated metal honeycomb structure may include a metal honeycomb structure having a plurality of laser-drilled holes wherein at least some of the plurality of holes are non-uniform in second, shape, and/or spacing between holes. In another embodiment, the perforated metal honeycomb structure may include an array of intercellular holes between hexagonal cells in the honeycomb structure. The array of intercellular holes may include at least a first hole and a second wherein the first and second holes are different from each other.

Abstract: In one embodiment of the present disclosure, a method of manufacturing perforated metal honeycomb material includes: printing a roll of metal foil with adhesive; laser perforating the roll of metal foil to provide a plurality of holes in the metal foil; sheeting the printed and perforated roll of metal foil into a plurality of stacked sheets; and laminating the sheets of metal foil into a honeycomb before expansion block (HOBE). In another embodiment of the present disclosure, a perforated metal honeycomb structure includes a metal honeycomb structure having a plurality of laser-drilled holes wherein at least some of the plurality of holes are non-uniform in size, shape, and/or spacing between holes.

Abstract: In one embodiment of the present disclosure, a method of manufacturing perforated metal honeycomb material includes: printing a roll of metal foil with adhesive; laser perforating the roll of metal foil to provide a plurality of holes in the metal foil; sheeting the printed and perforated roll of metal foil into a plurality of stacked sheets; and laminating the sheets of metal foil into a honeycomb before expansion block (HOBE). In another embodiment of the present disclosure, a perforated metal honeycomb structure includes a metal honeycomb structure having a plurality of laser-drilled holes wherein at least some of the plurality of holes are non-uniform in size, shape, and/or spacing between holes.