Textured caul plate

Patent metadata

Field	Value
Publication number	US-10737449-B2
Application number	US-201916443780-A
Country	US
Kind code	B2
Filing date	Jun 17, 2019
Priority date	Aug 25, 2015
Publication date	Aug 11, 2020
Grant date	Aug 11, 2020

Abstract

A system for manufacturing a composite article includes a resin-wetting control layer configured to be placed in contact with a composite ply of a composite preform. The resin-wetting control layer is configured complementary to a ply surface of the composite ply.

First claim

What is claimed is:

1. A system for manufacturing a composite article, comprising:
a resin-wetting control layer configured to be placed in contact with a composite ply of a composite preform; and
the resin-wetting control layer configured complementary to a ply surface of the composite ply, the ply surface having a plurality of divots, the resin-wetting control layer including a surface texture comprising a plurality of nubs spaced apart from each other and configured complementary to the plurality of divots in the ply surface.

2. The system of claim 1 , wherein:
the resin-wetting control layer is configured to reduce surface porosity of the ply surface.

3. The system of claim 1 , further including:
the resin-wetting control layer is associated with at least one of a tool surface and a caul surface of a respective forming tool and caul plate and configured complementary to the ply surface of an outermost ply on a respective tool side and caul side of the composite preform.

4. The system of claim 1 , wherein:
the resin-wetting control layer is associated with at least one of opposing core surfaces of a core configured to be sandwiched between inner plies of the composite preform, the resin-wetting control layer configured complementary to the ply surface of an inner ply on a core side of the composite preform.

5. The system of claim 1 , wherein:
the resin-wetting control layer includes a surface texture having a plurality of surface features configured complementary to the ply surface of the composite ply.

6. The system of claim 5 , wherein the surface features have at least one of the following:
a surface feature spacing in the range of approximately 0.020-0.100 inch;
a surface feature height of up to approximately 0.020 inch.

7. The system of claim 5 , wherein:
the composite ply of the composite preform is formed of a woven fabric; and
the surface features are formed complementary to the woven fabric.

8. The system of claim 7 , wherein:
the divots are formed at intersections of fiber tows in the woven fabric.

9. The system of claim 1 , wherein:
one or more of the nubs has a nub shape that is non-symmetrical about a central vertical axis.

10. The system of claim 1 , wherein:
one or more of the nubs has a truncated, pyramidal shape.

11. The system of claim 1 , wherein:
the resin-wetting control layer comprises a compliant layer being compliant along a through-the-thickness direction to conform to a complex contour of the ply surface.

12. The system of claim 11 , wherein:
the compliant layer comprises an elastomeric material.

13. The system of claim 11 , wherein:
the compliant layer has a layer thickness in a range of from 0.002 to 0.12 inch.

14. The system of claim 1 , wherein:
the resin-wetting control layer is integral with at least one of a tool surface of a forming tool, a caul surface of a caul plate, and a core surface of a core.

15. A system for manufacturing a composite article, comprising:
at least one of a forming tool and a caul plate, the forming tool having a tool surface, the caul plate having a caul surface, the tool surface and the caul surface configured to be in contact with a respective tool side and a caul side of a composite preform including an outermost ply formed of woven fabric having a plurality of divots;
a resin-wetting control layer associated with at least one of the tool surface and the caul surface and configured to reduce surface porosity in the respective tool side and caul side of the composite preform; and
the resin-wetting control layer formed as an elastomeric layer being compliant along a through-the-thickness direction and/or including a surface texture comprising a plurality of nubs spaced apart from each other and configured complementary to a geometry and spacing of the divots in the outermost ply.

16. A resin-wetting control layer for manufacturing a composite article, comprising:
a surface texture configured to be placed in contact with a composite ply of a composite preform having a plurality of divots; and
the surface texture including a plurality of nubs located complementary to the divots.

17. The resin-wetting control layer of claim 16 , wherein:
one or more of the nubs has a nub shape that is symmetrical about a central vertical axis along at least one direction of the nub.

18. The resin-wetting control layer of claim 16 , wherein:
one or more of the nubs has a nub shape that is non-symmetrical about a central vertical axis.

19. The resin-wetting control layer of claim 16 , wherein:
one or more of the nubs has a truncated, pyramidal shape.

20. The resin-wetting control layer of claim 16 , wherein the nubs have at least one of the following:
a nub spacing in the range of approximately 0.020-0.100 inch;
a nub height of up to approximately 0.020 inch.

Assignees

• Boeing Co

Inventors

• Bernetich Karl R
• Kohlbrenner James W
• Wilenski Mark S

Classifications

• Y02T50/40

  Weight reduction · CPC title

• B29L2031/3076

  Aircrafts (blades, propellers B29L2031/08) · CPC title

• B29C70/549

  Details of caul plates, e.g. materials or shape · CPC title

• B64C2001/0072

  from composite materials · CPC title

• B29D7/01 Primary

  Films or sheets · CPC title