MICRO-TRUSS MATERIALS HAVING IN-PLANE MATERIAL PROPERTY VARIATIONS

摘要

A micro-truss sheet having material properties varying across the sheet. The sheet may include a plurality of truss members intersecting at nodes. The diameter of the truss members at one point in the sheet may differ from the diameter of the truss members at another point in the sheet. In one embodiment the spacing between adjacent truss members may be different in one part of the sheet from the spacing between adjacent truss members in another part of the sheet.

主权项

1. A micro-truss sheet, including:
a plurality of first truss members defined by a plurality of first self-propagating polymer waveguides and extending along a first direction; a plurality of second truss members defined by a plurality of second self-propagating polymer waveguides and extending along a second direction; and a plurality of third truss members defined by a plurality of third self-propagating polymer waveguides and extending along a third direction; the plurality of first truss members, the plurality of second truss members, and the plurality of third truss members being one continuous body; wherein each truss member has a diameter; the sheet having a length substantially greater than its thickness, and the sheet having a first point and a second point separated along the length of the sheet wherein the diameter of a truss member of the plurality of first truss members, the plurality of second truss members, and the plurality of third truss members at the first point is at least 10% greater than the diameter of a truss member of the plurality of first truss members, the plurality of second truss members, and the plurality of third truss members at the second point.