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    SQUARE SYMMETRIC DOUBLE-DOUBLE LAMINATE STRUCTURES AND METHODS FOR MANUFACTURING AND USING THE SAME
    13.
    发明申请
    SQUARE SYMMETRIC DOUBLE-DOUBLE LAMINATE STRUCTURES AND METHODS FOR MANUFACTURING AND USING THE SAME 有权

    公开(公告)号：US20230015104A1

    公开(公告)日：2023-01-19

    申请号：US17864505

    申请日：2022-07-14

    申请人： The Board of Trustees of the Leland Stanford Junior University

    发明人： Stephen W. Tsai ,  Dan Wang ,  Antonio Miravete

    IPC分类号： B32B38/18 ,  B32B7/03 ,  B32B7/022 ,  B32B7/027

    摘要： Square symmetric composite laminate structures, and sub-modules thereof, are provided, along with methods of forming the same. The square symmetric laminate structures include two or more sub-laminate modules, each comprising: a first ply set consisting of a first ply layer oriented at a first angle and a second ply layer oriented at a second angle, a first sum of the first and second angles being ninety degrees; and a second ply set consisting of a third ply layer oriented at a third angle and a fourth ply layer oriented at a fourth angle, a second sum of the third and fourth angles being ninety degrees; wherein 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, thereby defining a double-double helix arrangement of the respective ply layers. Associated methods are also provided.

    STACKING SEQUENCE COMBINATIONS FOR DOUBLE-DOUBLE LAMINATE STRUCTURES
    14.
    发明申请
    STACKING SEQUENCE COMBINATIONS FOR DOUBLE-DOUBLE LAMINATE STRUCTURES 有权

    公开(公告)号：US20220297407A1

    公开(公告)日：2022-09-22

    申请号：US17694054

    申请日：2022-03-14

    申请人： The Board of Trustees of the Leland Stanford Junior University

    发明人： Stephen W. Tsai ,  Antonio Miravete

    IPC分类号： B32B7/03

    摘要： A sub-laminate module is described for use in forming composite laminate structures. The module includes a 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 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; first and second equal acute angles are defined by differences between an absolute value of the first and second angles and the third and fourth angles, respectively, wherein 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, so as to define a staggered double-double helix sequence of the respective ply layers. Associated composite laminate structures and methods are also disclosed.