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5 条记录 (耗时 0.023 秒)

    Optical fiber entry strain relief interface for compression-molded structures
    1.
    发明授权
    Optical fiber entry strain relief interface for compression-molded structures 失效
    用于压缩模制结构的光纤入口应变消除界面

    公开(公告)号：US5604836A

    公开(公告)日：1997-02-18

    申请号：US570049

    申请日：1995-12-11

    申请人： James R. Dunphy ,  Robert M. Rukus ,  Jong-Min Ha

    发明人： James R. Dunphy ,  Robert M. Rukus ,  Jong-Min Ha

    IPC分类号： G02B6/00 ,  G02B6/36 ,  G02B6/38

    CPC分类号： G02B6/3644 ,  G02B6/3887

    摘要： An optical fiber entry strain relief interface includes a composite structure (lay-up) 10 having an optical fiber 20 embedded therein. The optical fiber 20 enters (or exits) the lay-up 10 at at least one point 24 and passes through transition layers 47 comprising an adhesive film 42, a thin rubber sealing layer 44, and a thick rubber strain relief layer 46, and through a polymer plug 48 located above the layer 46. The lay-up is consolidated by heating the lay-up over a temperature profile and applying pressure through mostly closed compression molding tools 30,32. The adhesive film 42 bonds the adjacent layer 44 to the upper surface of the lay-up 10, the sealing layer 44 becomes soft enough to seal around the fiber 20 at a temperature lower than the temperature at which the resin 16 exhibits a low enough viscosity to leak out of the lay-up 10, thereby preventing the resin from leaking out of the lay-up 10 during lay-up consolidation, the strain relief layer 46 provides a rubber strain relief for the optical fiber 20, and the plug 48 supports the layers 47 during consolidation.

    摘要翻译： 光纤入口应变消除接口包括嵌入其中的光纤20的复合结构（叠层）10。 光纤20在至少一个点24处进入（或离开）叠层10，并穿过包括粘合膜42，薄橡胶密封层44和厚橡胶应变消除层46的过渡层47，并通过 位于层46上方的聚合物塞48.通过在温度分布上加热叠层并通过大部分封闭的压缩模制工具30,32施加压力来将叠层固结。 粘合膜42将相邻层44粘合到层叠体10的上表面，密封层44变得足够柔软，以便在低于树脂16表现出足够低粘度的温度的温度下围绕纤维20密封 从层叠体10漏出，从而防止树脂在层叠固结期间从层叠体10泄漏出来，应变消除层46为光纤20提供橡胶应变消除，插头48支承 巩固期间的层47。

    Composite structure resin cure monitoring apparatus using an optical fiber grating sensor
    2.
    发明授权
    Composite structure resin cure monitoring apparatus using an optical fiber grating sensor 失效
    复合结构树脂固化监测仪采用光纤光栅传感器

    公开(公告)号：US5770155A

    公开(公告)日：1998-06-23

    申请号：US560268

    申请日：1995-11-21

    申请人： James R. Dunphy ,  Robert M. Rukus ,  Jong-Min Ha

    发明人： James R. Dunphy ,  Robert M. Rukus ,  Jong-Min Ha

    IPC分类号： B29C35/02 ,  B29C70/54 ,  G01B11/16 ,  G01C19/56 ,  G01D5/353 ,  G01H11/06 ,  G01M11/08 ,  G01N11/00 ,  G01N33/44 ,  G01P15/125 ,  G01N21/17

    CPC分类号： G01M11/086 ,  B29C35/0288 ,  B29C70/54 ,  G01B11/18 ,  G01C19/56 ,  G01H11/06 ,  G01P15/125 ,  B29K2105/108 ,  G01D5/35316 ,  G01N33/44

    摘要： Resin curing of a composite laminated structure is monitored using an optical fiber 20 having a grating sensor 28 embedded therein. The fiber 20 is surrounded by upper and lower buffer regions 12,14 having a predetermined minimum number of layers 30 (or thickness) with uni-directional reinforcing filaments 32 and resin 34 therebetween. When the filaments 32 are oriented perpendicular to the longitudinal axis of the fiber 20, the buffer regions 12,14 allow the sensor 28 to exhibit maximum sensitivity to detection of the minimum resin viscosity and the gelation point (i.e., the onset of a rapid crosslinking rate) of the resin 34. The buffer regions 12,14 also have a minimum thickness which serve to isolate the sensor 28 from interfering stresses from arbitrarily angled filaments 32 in layers 30 of outer regions 10,16 which surround the buffer regions 12,14.

    摘要翻译： 使用其中嵌入有光栅传感器28的光纤20监测复合层压结构的树脂固化。 纤维20被具有预定的最小数量的层30（或厚度）的上缓冲区域12和下缓冲区域12,14包围，其中单向增强细丝32和树脂34在其间。 当细丝32垂直于纤维20的纵向轴线定向时，缓冲区域12,14允许传感器28显示对检测最小树脂粘度和凝胶化点的最大灵敏度（即，快速交联的开始 速率）。缓冲区域12,14还具有最小厚度，其用于将传感器28与围绕缓冲区域12,14的外部区域10,16的层30中任意成角度的细丝32的干扰应力隔离开来 。

    Variable area nozzle for gas turbine engines driven by shape memory alloy actuators
    4.
    发明授权
    Variable area nozzle for gas turbine engines driven by shape memory alloy actuators 有权
    由形状记忆合金致动器驱动的燃气涡轮发动机的可变面积喷嘴

    公开(公告)号：US06735936B2

    公开(公告)日：2004-05-18

    申请号：US09824419

    申请日：2001-04-02

    申请人： Nancy M. Rey ,  Robin Mihekun Miller ,  Thomas G. Tillman ,  Robert M. Rukus ,  John L. Kettle

    发明人： Nancy M. Rey ,  Robin Mihekun Miller ,  Thomas G. Tillman ,  Robert M. Rukus ,  John L. Kettle

    IPC分类号： F02K112

    CPC分类号： F02K1/1207 ,  F03G7/065 ,  F05D2300/505 ,  Y02T50/671 ,  Y10T74/20

    摘要： A gas turbine engine includes a variable area nozzle having a plurality of flaps. The flaps are actuated by a plurality of actuating mechanisms driven by shape memory alloy (SMA) actuators to vary fan exist nozzle area. The SMA actuator has a deformed shape in its martensitic state and a parent shape in its austenitic state. The SMA actuator is heated to transform from martensitic state to austenitic state generating a force output to actuate the flaps. The variable area nozzle also includes a plurality of return mechanisms deforming the SMA actuator when the SMA actuator is in its martensitic state.

    摘要翻译： 燃气涡轮发动机包括具有多个翼片的可变区域喷嘴。 翼片由形状记忆合金（SMA）致动器驱动的多个致动机构致动，以改变风扇存在的喷嘴面积。 SMA致动器在其马氏体状态下具有变形的形状，并且其奥氏体状态具有母体形状。 SMA致动器被加热以从马氏体状态转变为奥氏体状态，产生力输出以致动翼片。 可变区域喷嘴还包括当SMA致动器处于其马氏体状态时使SMA致动器变形的多个返回机构。