Functionally optimized fiber composite component and method for the production thereof

Patent metadata

Field	Value
Publication number	US-9862254-B2
Application number	US-201514659951-A
Country	US
Kind code	B2
Filing date	Mar 17, 2015
Priority date	Sep 19, 2012
Publication date	Jan 9, 2018
Grant date	Jan 9, 2018

Abstract

A fiber composite component is provided, particularly for a vehicle structure, having a fiber structure which includes at least one fiber layer, wherein at least one of the at least one fiber layers is formed from a number of pre-formed fiber mats, and a first pre-formed fiber mat has a greater fiber mat thickness than a second pre-formed fiber mat from the number of pre-formed fiber mats of the at least one fiber layer. A method for producing a corresponding fiber composite component is also provided.

First claim

What is claimed is:

1. A fiber composite panel structure of a vehicle, comprising:
a fiber structure comprising at least one fiber layer, said at least one fiber layer being formed from a number of pre-formed fiber mats that form the panel structure; and
a force application section, wherein
the panel structure is a frame or a door,
a first of the number of pre-formed fiber mats has a greater fiber mat thickness than a second of the number of pre-formed fiber mats, and
the first pre-formed fiber mat has a first fiber mat thickness in a region of the force application section, and has a second fiber mat thickness in a region outside of the force application section, and the first fiber mat thickness is greater than the second fiber mat thickness.

2. The fiber composite panel structure as claimed in claim 1 , wherein the at least one fiber layer comprises a matrix layer, an overlay structure layer, a mesh layer and/or a unidirectional or multidirectional fiber layer.

3. The fiber composite panel structure as claimed in claim 2 , wherein the number of pre-formed fiber mats are arranged next to one another in a planar manner in order to form the at least one fiber layer.

4. The fiber composite panel structure as claimed in claim 1 , wherein the number of pre-formed fiber mats are arranged next to one another in a planar manner in order to form the at least one fiber layer.

5. The fiber composite panel structure as claimed in claim 3 , wherein the number of pre-formed fiber mats, which are arranged next to one another in the planar manner, are arranged overlapping one another in edge regions thereof in order to form the at least one fiber layer.

6. The fiber composite panel structure as claimed in claim 4 , wherein the number of pre-formed fiber mats, which are arranged next to one another in the planar manner, are arranged overlapping one another in edge regions thereof in order to form the at least one fiber layer.

7. The fiber composite panel structure according to claim 1 , further comprising:
at least another force application section.

8. The fiber composite panel structure as claimed in claim 7 , further comprising:
a number of load paths which connect the force application sections to one another, wherein the first pre-formed fiber mat has a greater fiber mat thickness in the region of at least one force application section compared with a second fiber mat arranged in the region of the at least one load path.

9. The fiber composite panel structure as claimed in claim 8 , further comprising:
filler surfaces arranged adjacent to the number of load paths and/or to the force application sections, wherein pre-formed fiber mats in a region of the filler surfaces have a lesser fiber mat thickness than pre-formed fiber mats in a region of the force application sections and/or than the pre-formed fiber mats in a region of the number of load paths.

10. The fiber composite panel structure as claimed in claim 9 , wherein the pre-formed fiber mats, which are arranged in a region of the at least one load path, have an extension which is oriented along the load paths.

11. The fiber composite panel structure as claimed in claim 8 , wherein the pre-formed fiber mats, which are arranged in the region of the at least one load path, have an extension which is oriented along the load paths.

12. The fiber composite panel structure as claimed in claim 1 , wherein the first of the number of pre-formed fiber mats and the second of the number of pre-formed fiber mats have the same fiber volume density.

13. A fiber composite panel structure of a vehicle, comprising:
a fiber structure comprising at least one fiber layer, said at least one fiber layer being formed from a number of pre-formed fiber mats; and
a force application section, wherein
the panel structure is a door,
a first of the number of pre-formed fiber mats has a greater fiber mat thickness than a second of the number of pre-formed fiber mats, and
the first pre-formed fiber mat has a first fiber mat thickness in a region of the force application section, and has a second fiber mat thickness in a region outside of the force application section, and the first fiber mat thickness is greater than the second fiber mat thickness.

14. A fiber composite panel structure of a vehicle, comprising:
a fiber structure comprising at least one fiber layer, said at least one fiber layer being formed from a number of pre-formed fiber mats; and
a force application section, wherein
the panel structure is a frame,
a first of the number of pre-formed fiber mats has a greater fiber mat thickness than a second of the number of pre-formed fiber mats, and
the first pre-formed fiber mat has a first fiber mat thickness in a region of the force application section, and has a second fiber mat thickness in a region outside of the force application section, and the first fiber mat thickness is greater than the second fiber mat thickness.

Assignees

• Bayerische Motoren Werke Ag

Inventors

• Soldner Florian
• Gruber Wolfgang
• Zeidler Matthias
• Vallerius Markus
• Poggenborg Ralf

Classifications

• B29C70/887

  locally reinforced, e.g. by fillers (filler concentrated near the surface B29C70/64) · CPC title

• B29L2031/3055

  Cars · CPC title

• B29C70/48 Primary

  and impregnating the reinforcements in the closed mould, e.g. resin transfer moulding [RTM] {, e.g. by vacuum} · CPC title

• B29C70/08

  comprising combinations of different forms of fibrous reinforcements incorporated in matrix material, forming one or more layers, and with or without non-reinforced layers · CPC title

• B29C45/14467

  Joining articles or parts of a single article (B29C45/14377, B29C45/14385, B29C45/14581, B29C45/14614 and B29C45/006 take precedence) · CPC title