公开(公告)号：US20180272629A1

公开(公告)日：2018-09-27

申请号：US15464822

申请日：2017-03-21

Applicant: Bell Helicopter Textron Inc.

Inventor： Michael Burnett ,  Wei-Yueh Lee ,  Michael Dearman

IPC: B29C70/56 ,  B29C70/30 ,  B29C70/54 ,  G06F17/50

Abstract: In a first aspect, there is a method of making a specimen with a predetermined wrinkle defect, the steps including orienting a composite material around a layup tool at a wrap angle to form a closed loop; and generating at least one wrinkle with a predetermined characteristic in a portion of the closed loop to form a specimen. The predetermined characteristic is at least one of the following: wrinkle location, an outward wrinkle, an inward wrinkle, a wrinkle width, a wrinkle height, and a wrinkle length. In another aspect, there is a method of determining allowable defects for a composite component.

公开(公告)号：US10744727B2

公开(公告)日：2020-08-18

申请号：US15464822

申请日：2017-03-21

Applicant: Bell Helicopter Textron Inc.

Inventor： Michael Burnett ,  Wei-Yueh Lee ,  Michael Dearman

IPC: B29C70/54 ,  B29C70/56 ,  G01M5/00 ,  G01N3/08 ,  B29C70/32 ,  G01N3/02 ,  G01N3/04 ,  G06F30/23 ,  B29C70/30 ,  B29K105/00

Abstract: In a first aspect, there is a method of making a specimen with a predetermined wrinkle defect, the steps including orienting a composite material around a layup tool at a wrap angle to form a closed loop; and generating at least one wrinkle with a predetermined characteristic in a portion of the closed loop to form a specimen. The predetermined characteristic is at least one of the following: wrinkle location, an outward wrinkle, an inward wrinkle, a wrinkle width, a wrinkle height, and a wrinkle length. In another aspect, there is a method of determining allowable defects for a composite component.

公开(公告)号：US10669021B2

公开(公告)日：2020-06-02

申请号：US14022524

申请日：2013-09-10

Applicant: Bell Helicopter Textron Inc.

Inventor： Paul K. Oldroyd ,  Wei-Yueh Lee ,  James D. Hethcock, Jr. ,  John R. McCullough ,  Patrick R. Tisdale

IPC: B64C27/473 ,  B64C3/20

Abstract: An airfoil member can have a root end, a tip end, a leading edge, and a trailing edge. The airfoil member can include an upper skin, a lower skin, and a composite core member having a plurality of cells, an upper surface network of the cells can be bonded to the upper skin, a lower surface network of the cells can be bonded to the lower skin. The composite core can have a septum layer embedded in the cells that form the composite core, the septum layer being configured to provide tailored characteristics of the airfoil member.

公开(公告)号：US20190240876A1

公开(公告)日：2019-08-08

申请号：US15891111

申请日：2018-02-07

Applicant: Bell Helicopter Textron Inc.

Inventor： Wei-Yueh Lee ,  Paul K. Oldroyd

IPC: B29C35/08 ,  B29C70/44

CPC classification number: B29C35/0805 ,  B29C70/44 ,  B29C2035/0811 ,  B29K2105/0872 ,  B29K2995/0005 ,  B29L2031/3076

Abstract: A method is provided in one example embodiment and may include forming a ply stack on a tool, the ply stack comprising a plurality of plies; compacting the ply stack; and heating the ply stack during the compacting to form a composite structure, wherein the heating is caused by an electromagnetic inductive device or a radiative device. Compacting the ply stack can include encapsulating the ply stack within a bag and increasing a vacuum within the bag to increase external pressure on the bag and the ply stack.

公开(公告)号：US10746640B2

公开(公告)日：2020-08-18

申请号：US15464681

申请日：2017-03-21

Applicant: Bell Helicopter Textron Inc.

Inventor： Wei-Yueh Lee ,  Michael Burnett ,  Michael Dearman

IPC: G01N3/08 ,  B29C70/30 ,  B29C70/56 ,  G01M5/00 ,  G01N3/02 ,  G01N3/04 ,  B29C70/32 ,  G06F30/23 ,  B29C70/54 ,  G01N3/22 ,  B29L23/00

Abstract: There is a method of making a tubular specimen with a predetermined wrinkle defect including providing a layup tool with a cavity forming member having a cavity which resembles a desired shape of the at least one wrinkle; orienting a composite material around the mandrel at a wrap angle to form a closed loop; positioning a wrinkle tool on the closed loop; and/or generating at least one wrinkle with a predetermined characteristic in a portion of the closed loop to form a tubular specimen. The predetermined characteristic is at least one of the following: wrinkle location, an outward wrinkle, an inward wrinkle, a wrinkle width, a wrinkle height, and a wrinkle length. In another aspect, there is a method of offset load testing a tubular composite specimen. In a third aspect, there is a method of determining allowable defects for a composite component.

公开(公告)号：US20180275030A1

公开(公告)日：2018-09-27

申请号：US15464681

申请日：2017-03-21

Applicant: Bell Helicopter Textron Inc.

Inventor： Wei-Yueh Lee ,  Michael Burnett ,  Michael Dearman

IPC: G01N3/08 ,  B29C70/30 ,  B29C70/54 ,  B29C70/56 ,  G01N3/22 ,  G06F17/50

Abstract: There is a method of making a tubular specimen with a predetermined wrinkle defect including providing a layup tool with a cavity forming member having a cavity which resembles a desired shape of the at least one wrinkle; orienting a composite material around the mandrel at a wrap angle to form a closed loop; positioning a wrinkle tool on the closed loop; and/or generating at least one wrinkle with a predetermined characteristic in a portion of the closed loop to form a tubular specimen. The predetermined characteristic is at least one of the following: wrinkle location, an outward wrinkle, an inward wrinkle, a wrinkle width, a wrinkle height, and a wrinkle length. In another aspect, there is a method of offset load testing a tubular composite specimen. In a third aspect, there is a method of determining allowable defects for a composite component.

公开(公告)号：US20140301856A1

公开(公告)日：2014-10-09

申请号：US14022524

申请日：2013-09-10

Applicant: Bell Helicopter Textron Inc.

Inventor： Paul K. Oldroyd ,  Wei-Yueh Lee ,  James D. Hethcock, JR. ,  John R. McCullough ,  Patrick R. Tisdale

IPC: B64C27/473

CPC classification number: B64C27/473 ,  B64C3/20 ,  B64C2027/4736 ,  Y02T50/43 ,  Y10T29/49337

Abstract: An airfoil member can have a root end, a tip end, a leading edge, and a trailing edge. The airfoil member can include an upper skin, a lower skin, and a composite core member having a plurality of cells, an upper surface network of the cells can be bonded to the upper skin, a lower surface network of the cells can be bonded to the lower skin. The composite core can have a septum layer embedded in the cells that form the composite core, the septum layer being configured to provide tailored characteristics of the airfoil member.

Abstract translation: 翼型构件可以具有根端，尖端，前缘和后缘。 翼型构件可以包括上皮，下皮和具有多个细胞的复合芯部件，细胞的上表面网络可以结合到上皮肤，细胞的下表面网络可以粘合到 较低的皮肤。 复合芯可以具有嵌入在形成复合芯的单元中的隔膜层，隔膜层被配置为提供翼型构件的定制特性。