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    • 2. 发明授权
    • Method of producing a nozzle or a divergent nozzle element made of a composite
    • 制造由复合材料制成的喷嘴或发散喷嘴元件的方法
    • US08615877B2
    • 2013-12-31
    • US13054348
    • 2009-07-13
    • François CharleuxJean-Marie ParenteauBernard Delperier
    • François CharleuxJean-Marie ParenteauBernard Delperier
    • B21D53/00
    • C04B35/806C04B35/565C04B35/83C04B2235/614C04B2235/616C04B2235/72C04B2235/722C04B2235/723F02K9/97F05D2300/601F05D2300/603
    • A fiber preform is obtained by conforming panels of fiber texture on a former having a surface that reproduces the shape desired for a surface of the nozzle or the nozzle divergent section that is to be made. The panels are bonded together via their mutually contacting edges. A consolidated fiber reinforcement is formed by shaping the fiber preform impregnated with a consolidation composition including a resin. The shaping of the fiber preform is performed between the former and a jacket applied against the impregnated fiber preform so as the consolidated fiber reinforcement has a fiber volume percentage of at least 35%, and a thickness of less than 5 mm over at least a major fraction of its axial dimension. The densification of the fiber reinforcement is continued by chemical vapor infiltration after pyrolyzing the resin so that once densified, a part is obtained that has practically the shape and the wall thickness of the nozzle or the nozzle divergent section that is to be made.
    • 通过在具有再现喷嘴的表面所需形状的表面或要制造的喷嘴发散部分的表面上使纤维织构的面板相符合来获得纤维预制件。 面板通过相互接触的边缘粘合在一起。 通过使浸渍有包含树脂的固化组合物的纤维预制件成形来形成固结的纤维增强材料。 纤维预成型件的成型在前者和施加在浸渍的纤维预制件上的护套之间进行,因此固结的纤维增强材料的纤维体积百分比至少为35%,厚度小于5mm至少大于 其轴向尺寸的分数。 在热解树脂之后,纤维增强物的致密化继续通过化学气相渗透,使得一旦致密化,获得实际上具有实际上要形成的喷嘴或喷嘴发散部分的形状和壁厚的部分。
    • 3. 发明授权
    • High speed composite turbine wheel
    • 高速复合涡轮机轮
    • US5222866A
    • 1993-06-29
    • US912019
    • 1992-07-10
    • Jean-Pierre LaBroucheBernard BroquereJean-Marie ParenteauJacques EtienneAlain Lacombe
    • Jean-Pierre LaBroucheBernard BroquereJean-Marie ParenteauJacques EtienneAlain Lacombe
    • F01D5/28F01D5/34
    • F01D5/282F01D5/34Y02T50/672
    • The wheel comprises a central portion, or rim provided with blades at its peripheral portion and is made of a single piece of composite material formed by a fibrous reinforcement densified by a matrix. The fibrous reinforcement is formed from a helical fabric with radially oriented fibers and circumferentially oriented fibers. The density of fibers in a radial direction and the density of fibers in a circumferential direction varies along a radius of the wheel as a function of the variations of the radial stresses and circumferential stresses that are exerted on the wheel when it is in operation. At least part of the circumferentially oriented fibers in the rim are made of a material having high mechanical resistance, while at least part of circumferentially oriented fibers in the blades and at least part of the axially oriented fibers are made of a material having good resistance to high temperatures and chemical attacks.
    • 车轮包括中心部分或边缘,其周边部分设置有刀片,并由由基体致密化的纤维增强材料形成的单片复合材料制成。 纤维增强材料由具有径向取向纤维和周向取向纤维的螺旋织物形成。 纤维在径向方向上的密度和纤维在圆周方向上的密度随着轮的半径而变化,这是作用在轮上的径向应力和周向应力的变化的函数。 边缘中的周向取向纤维的至少一部分由具有高机械阻力的材料制成,而叶片中至少一部分周向取向的纤维和至少部分轴向取向的纤维由具有良好抵抗力的材料制成 高温和化学攻击。