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公开(公告)号:US20060208135A1
公开(公告)日:2006-09-21
申请号:US11084779
申请日:2005-03-18
IPC分类号: B64C30/00
CPC分类号: B32B37/12 , B29C70/088 , B29C70/342 , B29C70/865 , B29D99/0014 , B29K2995/0002 , B29K2995/0091 , B64C1/066 , B64C1/40 , B64C2001/0072 , F16F9/306 , Y02T50/43 , Y10T156/10
摘要: Systems and methods for reducing noise in aircraft fuselages and other structures are described herein. A noise reduction system configured in accordance with one embodiment of the invention includes an auxetic core, a damping layer, and a constraining layer. In this embodiment, the auxetic core is supported by a structural member, and the damping layer is sandwiched between the auxetic core and the constraining layer. A method for manufacturing a structural assembly in accordance with another embodiment of the invention includes forming a stiffener by positioning a first ply of composite material against a first tool surface, positioning damping material against the first ply, and positioning a second ply of composite material against the damping material to sandwich the damping material between the first and second plies. The method can further include forming a skin by positioning a third ply of composite material against a second tool surface offset from the first tool surface, and attaching the stiffener to the skin by co-curing the first, second and third plies of composite material.
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公开(公告)号:US20070102239A1
公开(公告)日:2007-05-10
申请号:US11163957
申请日:2005-11-04
CPC分类号: B64C1/18 , B32B3/12 , B32B5/26 , B32B27/38 , B32B2260/021 , B32B2260/023 , B32B2260/046 , B32B2262/0269 , B32B2262/101 , B32B2262/106 , B32B2307/102 , B32B2307/54 , B32B2307/56 , B32B2419/04 , B32B2605/003 , B32B2605/18
摘要: In accordance with the present invention an aircraft floor panel is provided comprising a honeycomb core element having an upper core surface, a lower core surface, and a core thickness. An upper face sheet assembly is mounted to and seals the upper core surface and includes at least one upper material sheet impregnated with an upper epoxy resin. A lower damping face sheet assembly is mounted to and seals the lower core surface and includes at least one lower material sheet infused with a highly damped lower epoxy resin. The lower damping face sheet assembly dampens vibrational noise.
摘要翻译: 根据本发明,提供一种飞机地板镶板,其包括具有上芯表面,下芯表面和芯厚度的蜂窝芯元件。 上表面片组件安装到上芯片表面上并密封上芯片表面,并且包括至少一个浸有上部环氧树脂的上部材料片材。 下阻尼面板组件安装到下芯体表面并密封下芯表面,并且包括至少一个注入高度阻尼的下环氧树脂的下材料片。 下阻尼面板组件会抑制振动噪声。
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