Methodology and Tooling Arrangements for Increasing Interlaminar Shear Strength in a Ceramic Matrix Composite Structure
    21.
    发明申请
    Methodology and Tooling Arrangements for Increasing Interlaminar Shear Strength in a Ceramic Matrix Composite Structure 有权
    在陶瓷基体复合结构中提高层间剪切强度的方法和模具布置

    公开(公告)号:US20100291348A1

    公开(公告)日:2010-11-18

    申请号:US12464543

    申请日:2009-05-12

    IPC分类号: B32B3/06 B29C69/00

    摘要: Methodology and tooling arrangements for increasing interlaminar shear strength in a ceramic matrix composite (CMC) structure are provided. The CMC structure may be formed by a plurality of layers of ceramic fibers disposed between a top surface and a bottom surface of the composite structure. A plurality of surface recesses are formed on the surfaces of the structure. For example, each of the surfaces of the composite structure may be urged against corresponding top and bottom surfaces of a tool having a plurality of asperities. The plurality of surface recesses causes an out-of-plane sub-surface fiber displacement along an entire thickness of the structure, and the sub-surface fiber displacement is arranged to increase an interlaminar shear strength of the structure.

    摘要翻译: 提供了用于增加陶瓷基体复合材料(CMC)结构中的层间剪切强度的方法和工具布置。 CMC结构可以由布置在复合结构的顶表面和底表面之间的多层陶瓷纤维形成。 在结构的表面上形成多个表面凹部。 例如,复合结构的每个表面可以被推压到具有多个凹凸的工具的相应的顶部和底部表面上。 所述多个表面凹部沿着所述结构的整个厚度引起面外亚表面纤维位移,并且所述次表面纤维位移被布置成增加所述结构的层间剪切强度。

    Method of manufacturing a hybrid structure
    23.
    发明授权
    Method of manufacturing a hybrid structure 失效
    制造混合结构的方法

    公开(公告)号:US07351364B2

    公开(公告)日:2008-04-01

    申请号:US10767012

    申请日:2004-01-29

    IPC分类号: B28B11/00 B28B5/00 B29C33/76

    摘要: A method of manufacturing a hybrid structure (100) having a layer of CMC material (28) defining an interior passageway (24) and a layer of ceramic insulating material (18) lining the passageway. The method includes the step of casting the insulating material to a first thickness required for effective casting but in excess of a desired second thickness for use of the hybrid structure. An inner mold (14) defining a net shape desired for the passageway remains in place after the casting step to mechanically support the insulating material during a machining process used to reduce the thickness of the insulating material from the as-cast first thickness to the desired second thickness. The inner mold also provides support as the CMC material is deposited onto the insulating material. The inner mold may include a fugitive material portion (20) to facilitate its removal after the CMC material is formed.

    摘要翻译: 一种制造具有限定内部通道(24)的CMC材料层(28)和衬套通道的陶瓷绝缘材料层(18)的混合结构(100)的方法。 该方法包括将绝缘材料浇铸到有效铸造所需的第一厚度但超过所需的第二厚度以用于混合结构的步骤。 限定通道所需的净形状的内模(14)在铸造步骤之后保持就位,以在用于将绝缘材料的厚度从铸造第一厚度减小到期望的机械加工过程期间机械地支撑绝缘材料 第二厚度。 当CMC材料沉积到绝缘材料上时,内模还提供支撑。 内部模具可以包括短暂材料部分(20),以便在形成CMC材料之后便于其移除。

    Gussets for strengthening CMC fillet radii
    27.
    发明授权
    Gussets for strengthening CMC fillet radii 有权
    加强CMC圆角半径的角撑板

    公开(公告)号:US08236409B2

    公开(公告)日:2012-08-07

    申请号:US12432081

    申请日:2009-04-29

    IPC分类号: B32B1/00

    摘要: A ceramic matrix composite (CMC) structure (50) with first (26) and second (28) CMC walls joined at an intersection (34) containing continuous fibers (53). A gusset (52) is formed in the intersection by an inward bending of some or all ceramic fibers (53) of the intersection, resulting in a diagonal brace between the first and second CMC walls. This creates a depression (54) or void (59) in the intersection. One or more ceramic reinforcement devices fill or span the depression to prevent distortion of the gusset. The reinforcement devices may include a ceramic filler (60) or core (61), a CMC rod or cord (56), and a CMC tape (62). The ceramic filler (60) may be continuous with a ceramic insulation layer (36) on an outer surface of the first CMC wall.

    摘要翻译: 在包含连续纤维(53)的交叉点(34)处连接有第一(26)和第二(28)CMC壁的陶瓷基体复合材料(CMC)结构(50)。 通过相交部分或全部陶瓷纤维(53)的向内弯曲在交叉点形成角撑板(52),从而在第一和第二CMC壁之间产生对角撑杆。 这在交叉口中产生凹陷(54)或空隙(59)。 一个或多个陶瓷加强装置填充或跨越凹陷以防止角撑板变形。 加强装置可以包括陶瓷填料(60)或芯(61),CMC棒或绳(56)和CMC带(62)。 陶瓷填料(60)可以与第一CMC壁的外表面上的陶瓷绝缘层(36)连续。

    Compressible ceramic seal
    28.
    发明授权
    Compressible ceramic seal 有权
    可压缩陶瓷密封

    公开(公告)号:US08132442B2

    公开(公告)日:2012-03-13

    申请号:US12366822

    申请日:2009-02-06

    IPC分类号: G01N7/00

    摘要: A stack of substantially parallel ceramic plates (22) separated and interconnected by ceramic spacers (26, 27) forming a seal structure (20) with a length (L), a width (W), and a thickness (T). The spacers are narrower in width than the plates, and may be laterally offset from spacers in adjacent rows to form a space (28) in a row that aligns with a spacer in another adjacent row. An adjacent plate bends into the space when the seal structure is compressed in thickness. The spacers may have gaps (60, 62) forming a stepped or labyrinthine cooling flow path (66) within the seal structure. The spacers of each row may vary in lateral separation, thus providing a range of compressibility that varies along the width of the seal structure.

    摘要翻译: 通过形成具有长度(L),宽度(W)和厚度(T)的密封结构(20)的陶瓷间隔件(26,27)分离和互连的大致平行的陶瓷板(22)的堆叠。 间隔件的宽度比板宽,并且可以在相邻行中的间隔件横向偏移以形成与另一相邻行中的间隔件对准的行中的空间(28)。 当密封结构被压缩时,相邻的板弯曲到空间中。 间隔件可以具有在密封结构内形成阶梯式或迷宫式冷却流道(66)的间隙(60,62)。 每排的间隔物可以在侧向分离中变化,从而提供沿密封结构的宽度变化的一定范围的压缩性。

    METHODOLOGY AND TOOLING ARRANGEMENTS FOR STRENGTHENING A SURFACE BOND IN A HYBRID CERAMIC MATRIX COMPOSITE STRUCTURE
    30.
    发明申请
    METHODOLOGY AND TOOLING ARRANGEMENTS FOR STRENGTHENING A SURFACE BOND IN A HYBRID CERAMIC MATRIX COMPOSITE STRUCTURE 审中-公开
    用于加强混合陶瓷基体复合结构中表面粘结的方法和工具安排

    公开(公告)号:US20100047512A1

    公开(公告)日:2010-02-25

    申请号:US12194108

    申请日:2008-08-19

    IPC分类号: B32B5/08 B05D3/12 B32B18/00

    摘要: A ceramic matrix composite (CMC) structure and methods of fabricating such structure are disclosed. In one example, the surface of a CMC substrate (12) is urged against a surface of a tool having blunt teeth. The blunt teeth can form surface indents that can serve as a first bond-enhancing arrangement between the surface of the substrate and a corresponding boundary of a thermally-insulating coating (14). In another example, sharp teeth can form surface indents and also penetrate through the surface of the substrate to cut some of the fibers beneath the surface of the substrate into split fiber segments, and a portion of the split fiber segments can protrude above the surface of the substrate. The protruding fiber segments can serve as a second bond-enhancing arrangement between the surface of the substrate and the corresponding boundary of the coating.

    摘要翻译: 公开了一种陶瓷基复合材料(CMC)结构及其制造方法。 在一个示例中,CMC衬底(12)的表面被推靠在具有钝齿的工具的表面上。 钝齿可以形成表面凹痕,其可以用作基材表面和绝热涂层(14)的对应边界之间的第一粘结增强布置。 在另一个实例中,锋利的齿可以形成表面凹陷并且还穿透基底的表面以将基底表面下的一些纤维切割成分裂的纤维段,并且一部分分裂纤维段可以突出在 底物。 突出的纤维段可以用作基材表面和涂层的相应边界之间的第二粘结增强布置。