Patent ID: 11858249
Assignee: THE BOARD OF TRUSTEES OF THE LELAND STANFORD JUNIOR UNIVERSITY
Field: Surface technology, coating (Chemistry)
Classification: CPC B | IPC B

Claim 19:
20. A method of manufacturing a sub-laminate module for use in forming a composite laminate structure, the method comprising the steps of:
positioning a first ply set in a first orientation, the first ply set containing a first ply layer oriented at a first angle and a second ply layer oriented at a second angle, the second angle being unequal the first angle, a difference between an absolute value of the first and second angles defining a first acute angle there-between;
positioning a second ply set in a second orientation different from the first orientation, the second ply set containing a third ply layer oriented at a third angle and a fourth ply layer oriented at a fourth angle, the fourth angle being unequal the third angle, a difference between the third and fourth angles defining a second acute angle there-between, the second acute angle being the same as the first acute angle; and
stacking the second ply set adjacent the first ply set so as to define a staggered double-double helix sequence of the respective layers,
wherein, when stacked, the second ply layer is positioned adjacent the third ply layer and the second and third ply layers are both positioned intermediate the first and fourth ply layers.