Composite J-Beam Forming via Segmented C-Z Channel Assembly

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Solution Overview

Problem

The labor-intensive fabrication process of composite J-beams, particularly the forming of 'Z' channels, limits production speed and increases costs, necessitating a more efficient and automated method for forming support beams.

Innovation Solution

The method involves using forming tools to bend C-shaped composite charges into J-beam configurations, with optional heating and bladder inflation to facilitate bending, and curing to form efficient support beams, allowing for increased automation and reduced labor.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If hand lay up fabrication method is used for Z channels, then manufacturing flexibility is maintained, but productivity is low and labor costs increase

Engineering Contradiction:
Improveproduction speedVSAvoidautomation level
Core Design Contradiction:
ProductivityVSExtent of automation

Solution Approach 1:

The patent divides the J-beam fabrication into separate C-channel and Z-channel components that are formed independently and then joined. This segmentation allows each component to be manufactured using optimized processes (C-channels via elastomeric membrane hot forming, Z-channels via hand lay-up), resolving the contradiction by enabling automated production of critical components while maintaining manual fabrication where flexibility is needed.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent combines multiple Z-channels and C-channels into a composite assembly that forms the complete J-beam structure. This merging allows the structure to achieve the strength and stiffness of a monolithic beam while utilizing efficient automated forming processes for the C-channel components, thereby improving productivity without sacrificing structural integrity.

Inventive Principle:
Principle #5Merging (Combining)

2Ease of manufacture

If hand lay up method is used for Z channel fabrication, then process simplicity is maintained, but production costs increase

Engineering Contradiction:
Improvefabrication simplicityVSAvoidproduction efficiency
Core Design Contradiction:
Ease of manufactureVSProductivity

Solution Approach 1:

By segmenting the J-beam into C-channel and Z-channel components, the patent allows Z-channels to be fabricated using simple hand lay-up methods while C-channels are produced through efficient elastomeric membrane hot forming. This segmentation resolves the contradiction by applying manual fabrication only where necessary while automating high-volume production steps.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent performs preliminary forming of C-channels using elastomeric membrane hot forming to create pre-shaped components that can be quickly assembled with hand-laid Z-channels. This preliminary action reduces the overall fabrication time and complexity, improving production efficiency without requiring complex automated systems for the entire structure.

Inventive Principle:
Principle #10Preliminary action

3Weight of moving object

If composite materials are used for J-beam fabrication, then weight reduction is achieved, but forming complexity increases

Engineering Contradiction:
Improvebeam weightVSAvoidforming process complexity
Core Design Contradiction:
Weight of moving objectVSDevice complexity

Solution Approach 1:

The patent segments the composite J-beam into C-channel and Z-channel components that can be formed using different specialized processes. C-channels are formed via elastomeric membrane hot forming while Z-channels use hand lay-up, allowing each component to be optimized for its specific geometry and reducing the overall forming complexity compared to creating a monolithic composite structure.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent utilizes composite materials for both C-channel and Z-channel components, maintaining the weight advantage of composites while managing forming complexity through component segmentation. The composite structure is achieved through assembling pre-formed composite components rather than forming a single complex composite piece, thereby reducing process complexity.

Inventive Principle:
Principle #40Composite materials

Applied Scientific Principles

This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.

Function Achieved in This Case

This approach enhances production efficiency and reduces costs by automating the fabrication of composite J-beams, enabling faster and more cost-effective production of support beams.

Implementation Method 1

Composite C channels are formed, among other ways, with an elastomeric membrane hot forming machine

Methodology Applied
Scientific EffectHot forming: Heating

Implementation Method 2

The bending of a second portion of the additional charge may include inflating at least one bladder proximate the first forming tool

Methodology Applied
Scientific EffectPressure application: Pressure Increase

Implementation Method 3

The method may include heating the first forming tool, the fixed forming tool, or both prior to formation of the support beam

Methodology Applied
Scientific EffectThermal heating: Heating

Implementation Method 4

The method may include curing the support beam once the second portion of the additional charge is bent

Methodology Applied
Scientific EffectCuring: Photopolymerisation

Data Source

PatentUS7588711B2Method for forming a composite support beam
Publication Date: 2009.09.15 THE BOEING CO
  • US7588711B2 patent drawing
  • US7588711B2 patent drawing
  • US7588711B2 patent drawing

AI summary

A method of forming a support beam is provided. One exemplary method of forming a support beam includes supporting a C-shaped charge upon a first forming tool and placing an additional composite charge upon at least a portion of the C-shaped charge and a second forming tool proximate the first forming tool. The method of forming a support beam further includes positioning a fixed forming tool proximate a first portion of the additional charge and bending the additional charge about the forming tool.