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1. 发明授权

US06620484B1 Variable density stitched-composite structural elements for energy absorption 失效
标题翻译：用于能量吸收的可变密度缝合 - 复合结构元件
公开(公告)号：US06620484B1
公开(公告)日：2003-09-16
申请号：US09587796
申请日：2000-06-06
申请人： Akif O. Bolukbasi , Joyanto Kumar Sen
发明人： Akif O. Bolukbasi , Joyanto Kumar Sen
IPC分类号： B32B306
CPC分类号： B64C1/062 , B64C2001/0072 , Y02T50/43 , Y10T428/24033
摘要： An energy absorbing stitched-composite structural element is provided having a glass thread stitched therethrough. The stitching pattern of the thread varies in density from a low-density portion at an initial impact portion of the panel to a high density portion at a final impact portion of the panel. Preferably, the stitch pattern includes a plurality of rows laterally spaced apart relative to the height of the panel. The spacing between adjacent rows progressively decreases from the initial impact portion of the panel to the final impact portion of the panel. Alternatively, or in combination therewith, the number of stitches per row varies from the fewest number of stitches proximate the initial impact portion of the panel to the final impact portion of the panel. In a highly preferred embodiment of the present invention, the stitched composite panel is incorporated into the subfloor structure of an aircraft fuselage.
摘要翻译：提供了一种能量吸收缝合复合结构元件，其具有穿过其中的玻璃线。螺纹的缝合图案的密度从面板的初始冲击部分处的低密度部分到面板的最终冲击部分处的高密度部分的密度变化。优选地，针迹图案包括相对于面板的高度横向间隔开的多个行。相邻行之间的间隔从面板的初始冲击部分逐渐减小到面板的最终冲击部分。可替换地或与其组合，每排的针数从接近面板的初始冲击部分到面板的最终冲击部分的最少的线数变化。在本发明的高度优选的实施例中，缝合的复合面板被结合到飞行器机身的底层地板结构中。

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