초록 ▼

A method of forming a pin-reinforced foam core sandwich structure (10) including placing first and second face sheets (12), (14) on opposite sides of a foam core (16), the foam core (16) having at least one low density sublayer (28), an optional high density foam sublayer (26), and a plurality of Z-

A method of forming a pin-reinforced foam core sandwich structure (10) including placing first and second face sheets (12), (14) on opposite sides of a foam core (16), the foam core (16) having at least one low density sublayer (28), an optional high density foam sublayer (26), and a plurality of Z-pins (20) positioned therein. The combination of the foam core (16) and face sheets (12), (14) forming a preliminary structure. Autoclave curing the preliminary structure according to a particular temperature and pressure regime, to crush the at least one low density sublayer (28) and to force the plurality of Z-pins (20) into the first and second face sheets (12), (14). Also provided is a pin-reinforced foam core sandwich structure (10) formed by the above process. In a second embodiment, all, or a portion, of the foam core (16) is removed using a solvent to dissolve the foam core (16), but not the Z-pins, to create a column structure (40).

대표청구항 ▼

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] A sandwich structure comprising:first and second rigid face sheets;a foam core disposed between said first and second face sheets;a plurality of pins extending through the combinat

[ The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:] [1.] A sandwich structure comprising:first and second rigid face sheets;a foam core disposed between said first and second face sheets;a plurality of pins extending through the combination of face sheets and foam core;wherein the foam core comprises first and second crushable sublayers and at least one noncrushable sublayer located between the first and second crushable sublayers.