Conductive pre-impregnated composite sheet and method for making the same

A method for making a conductive pre-impregnated composite sheet, said method comprising:

• joining a nanomaterial composite sheet, a fiber-reinforcing sheet, and a resin film to form a combined sheet in which said nanomaterial composite sheet is located between said resin film and said fiber-reinforcing sheet, wherein:
• said nanomaterial composite sheet is electrically conductive along at least one axial direction and comprises:
• a nonwoven carbon fiber veil having a first surface and a second surface, opposite said first surface;
• a conductive nanomaterial structure directly coupled to said first surface of said nonwoven carbon fiber veil, said conductive nanomaterial structure being opaque to a first electromagnetic radiation having a frequency greater than 100 MHz;
• and
• a metallic coating directly coupled to said second surface of said nonwoven carbon fiber veil, said metallic coating being opaque to a second electromagnetic radiation having a frequency less than 100 MHz;
• heating said combined sheet;
• compacting said combined sheet;
• cooling said combined sheet;
• and
• forming said conductive pre-impregnated composite sheet.