A layer 1 is formed from carbon fibre strands that are pre-impregnated with
epoxy resin to hold the fibers together. The strands of carbon fiber that
make up the layer 1 comprise eight uni-directional sub layers that are
assembled with their strands extending at different angles to each other.
The assembled sub-layers that are impregnated with epoxy resin are then
baked under pressure in an autoclave to form a composite layer 1. A laser
is then used to burn through the layer to make the holes 2.
Current U.S. Class: | 264/400; 181/292; 219/121.7; 219/121.71; 219/121.72; 428/107; 428/109; 428/113; 428/114; 428/131; 428/137 |
Current CPC Class: |
B23K 26/381 (20130101); B23K 26/407 (20130101); B23K 26/4085 (20130101); B29C 70/545 (20130101); B64C 21/025 (20130101); B64C 21/08 (20130101); B23K 26/4065 (20130101); Y10T 428/24091 (20150115); Y02T 50/166 (20130101); B64C 2230/14 (20130101); B64C 2230/22 (20130101); B64C 2230/20 (20130101); Y10T 428/24322 (20150115); Y10T 428/24132 (20150115); Y10T 428/24124 (20150115); Y10T 428/24074 (20150115); Y10T 428/24273 (20150115) |
Current International Class: |
B23K 26/00 (20060101); B23K 26/38 (20060101); B23K 26/40 (20060101); B29C 70/04 (20060101); B29C 70/54 (20060101); B64C 21/00 (20060101); B64C 21/08 (20060101); B64C 21/02 (20060101); B23K 026/00 () |
Field of Search: |
;428/137,131,113,107,109,114 ;219/121.7,121.71,121.72 ;181/292 ;264/400
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