公开(公告)号：US5490892A

公开(公告)日：1996-02-13

申请号：US197638

申请日：1994-02-15

Applicant: Stephane Castagnos ,  Jean-Louis Limousin

Inventor： Stephane Castagnos ,  Jean-Louis Limousin

IPC: B32B37/00 ,  B29C37/00 ,  B29D24/00 ,  B32B3/12 ,  B32B5/02 ,  B32B5/12 ,  B32B18/00 ,  C04B35/80 ,  E04C2/24 ,  B32B5/06 ,  C01B31/00

CPC classification number: B32B18/00 ,  B29C37/0082 ,  B29D24/007 ,  C04B35/80 ,  B29L2031/608 ,  C04B2237/32 ,  C04B2237/38 ,  C04B2237/385

Abstract: Distinct preforms are made for different portions of a composite material part that is to be fabricated, and they are assembled together in a non-densified state or in a state that is not completely densified by uniting respective contacting surfaces of the preforms (13, 15, 36) together by means of fibrils (17, 19) projecting perpendicularly from the surface of one of the preforms (13, 15) and in which the surface of another preform (36) is engaged. The assembled-together preforms are then co-densified. The fibrils are formed on the surface of a fiber preform by the ends of fibers thereof that have been displaced by the preform being needled. The method is particularly suitable for fabricating a sandwich panel of composite material comprising two rigid skins between which there is disposed a core constituted by partitions that are perpendicular to the skins.

Abstract translation: 不同的预成型件是为要制造的复合材料部件的不同部分制成的，并且它们以非致密化状态或未被完全致密化的状态组装在一起，通过将预成型件（13,15）的各个接触表面 ，36）通过从其中一个预成型件（13,15）的表面垂直突出并且其中另一个预成型件（36）的表面接合的原纤维（17,19）组合在一起。 然后将组装好的预制件共同致密化。 原纤维由纤维预制件的表面形成，纤维预制件的端部被预成型件所针对的位移。 该方法特别适用于制造包括两个刚性表面的复合材料夹层板，在其间设有由垂直于表皮的隔板构成的芯。