发明名称 |
QUASI-ISOTROPIC SANDWICH STRUCTURES |
摘要 |
<p>A quasi-isotropic sandwich structure is provided for resisting loads along multiple axes. The structure includes a core material sandwiched by fiberglass reinforcements. Fiberglass rovings are inserted through the structure such that the rovings are oriented along three axes, with adjacent axes separated by approximately 120°. Machines and methods for forming the structures are also disclosed. In one case, a machine having a single stitch head is reconfigured in each of three passes of the material to form the sandwich structure. In other cases, a machine having three stitch heads is used to form the structure with a single pass of the material. In some embodiments, the machine includes an indexing stitch head oriented at approximately 0° and two stationary stitch heads oriented at approximately−60° and +60° with respect to the machine direction. In other embodiments, the machine includes three stationary stitch heads oriented at approximately 90°,−30°, and +30°.</p> |
申请公布号 |
EP2394001(A2) |
申请公布日期 |
2011.12.14 |
申请号 |
EP20100739050 |
申请日期 |
2010.02.03 |
申请人 |
3M INNOVATIVE PROPERTIES COMPANY |
发明人 |
ROMIER, FREDERIC;SCHEBATH, STEPHANE;JOHNSON, TIM;JACQUINET, DAMIEN |
分类号 |
E04C2/36;B32B5/06;B32B5/18;B32B5/26;B32B17/02;D05C17/00;E04C2/26 |
主分类号 |
E04C2/36 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|