PI(π)-SHAPED PREFORM AND BONDED JOINTS THEREOF

To provide a low-cost pi(π)-shaped preform, e.g. in the field of composite aircraft structures.SOLUTION: There is provided a pi(π)-shaped preform (10) comprising a base component (12) and a pair of axially elongated legs (14, 16). The pair of axially elongated legs (14, 16) are coupled to the base c...

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Bibliographische Detailangaben
Hauptverfasser:	ROBERT WARNER KOON, CARL Q ROUSSEAU, DANIEL H HECHT, FELIX NHANCHAU NGUYEN
Format:	Patent
Sprache:	eng ; jpn
Schlagworte:	AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F,C08G CHEMISTRY COMPOSITIONS BASED THEREON GENERAL PROCESSES OF COMPOUNDING METALLURGY ORGANIC MACROMOLECULAR COMPOUNDS THEIR PREPARATION OR CHEMICAL WORKING-UP WORKING-UP
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Beschreibung
Zusammenfassung:	To provide a low-cost pi(π)-shaped preform, e.g. in the field of composite aircraft structures.SOLUTION: There is provided a pi(π)-shaped preform (10) comprising a base component (12) and a pair of axially elongated legs (14, 16). The pair of axially elongated legs (14, 16) are coupled to the base component to define a channel between these pairs of axially elongated legs (14, 16). The pair of axially elongated legs comprises plies of prepreg oriented in a ply stack, where at least a portion of the prepreg comprises discontinuous, aligned fibers.SELECTED DRAWING: Figure 1 【課題】例えば複合航空機構造体分野において、低コストのパイ（π）字形プリフォームを提供する。【解決手段】ベース部材（１２）および１対の軸方向に細長いレッグ（１４，１６）を有するパイ（π）字形プリフォーム（１０）が提供され、１対の軸方向に細長いレッグ（１４，１６）は、これら１対の軸方向に細長いレッグ（１４，１６）相互間にチャネルを形成するようベース部材に結合されている。１対の軸方向に細長いレッグは、プライスタック内で配向したプレプレグのプライを含み、プレプレグの少なくとも一部分は、不連続の整列した繊維を含む。【選択図】図１