发明授权
US6033510A Method for fabricating composite structures using pultrusion processing
失效
使用拉挤成型加工制造复合结构的方法
- 专利标题: Method for fabricating composite structures using pultrusion processing
- 专利标题(中): 使用拉挤成型加工制造复合结构的方法
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申请号: US933735申请日: 1997-09-23
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公开(公告)号: US6033510A公开(公告)日: 2000-03-07
- 发明人: Gary L. Farley
- 申请人: Gary L. Farley
- 申请人地址: DC Washington
- 专利权人: The United States of America as represented by the United States National Aeronautics and Space Administration
- 当前专利权人: The United States of America as represented by the United States National Aeronautics and Space Administration
- 当前专利权人地址: DC Washington
- 主分类号: B29B11/04
- IPC分类号: B29B11/04 ; B29B15/08 ; B29C35/08 ; B29C70/46 ; B29C70/52
摘要:
A method for fabricating composite structures at a low-cost, moderate-to-high production rate. A first embodiment of the method includes employing a continuous press forming fabrication process. A second embodiment of the method includes employing a pultrusion process for obtaining composite structures. The methods include coating yarns with matrix material, weaving the yarn into fabric to produce a continuous fabric supply and feeding multiple layers of net-shaped fabrics having optimally oriented fibers into a debulking tool to form an undebulked preform. The continuous press forming fabrication process includes partially debulking the preform, cutting the partially debulked preform and debulking the partially debulked preform to form a netshape. An electron-beam or similar technique then cures the structure. The pultrusion fabric process includes feeding the undebulked preform into a heated die and gradually debulking the undebulked preform. The undebulked preform in the heated die changes dimension until a desired cross-sectional dimension is achieved. This process further includes obtaining a net-shaped infiltrated uncured preform, cutting the uncured preform to a desired length and electron-beam curing (or similar technique) the uncured preform. These fabrication methods produce superior structures formed at higher production rates, resulting in lower cost and high structural performance.