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Method for superplastic forming a multilayer structure having a monolithic attachment member

A technology for attaching components and multi-layer structures, which is applied in the direction of manufacturing tools, welding equipment, vehicle parts, etc., and can solve problems such as increasing volume, reducing density, and complexity

Active Publication Date: 2018-03-13
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] While air / void space in a multilayer structure advantageously reduces density (increases volume), it presents a complication when the multilayer structure must be attached to another structure (e.g., a frame or another multilayer structure)
For example, inserting mechanical fasteners, such as bolts, through a multi-layer structure and then tightening onto the multi-layer structure can cause the collapse of air / void spaces which can damage the associated connections

Method used

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  • Method for superplastic forming a multilayer structure having a monolithic attachment member
  • Method for superplastic forming a multilayer structure having a monolithic attachment member
  • Method for superplastic forming a multilayer structure having a monolithic attachment member

Examples

Experimental program
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Embodiment approach

[0056]Clause 1. A method of forming a multilayer structure from a precursor panel having an edge, the method comprising: connecting an attachment member to the precursor panel such that the edge of the attachment member is in contact with all of the precursor panels. aligning the edges; and applying heat and air pressure to expand the precursor sheet.

[0057] Clause 2. The method of Clause 1, wherein said connecting the attachment member to the front body panel comprises connecting an attachment member comprising a single piece.

[0058] Clause 3. The method of clause 1 or 2, wherein said connecting the attachment member to the precursor panel comprises connecting a precursor panel comprising a layered structure.

[0059] Clause 4. The method of clause 3, comprising connecting the attachment member to each layer of the layered structure.

[0060] Clause 5. The method of any one of clauses 1 to 4, wherein said attaching said attachment member to said precursor panel comprises...

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Abstract

A method for forming a multilayer structure from a precursor panel having an edge, the method including steps of connecting an attachment member to the precursor panel such that an edge of the attachment member is in alignment with the edge of the precursor panel and applying heat and gas pressure to expand the precursor panel.

Description

technical field [0001] This application relates to superplastic forming of multilayer structures, and more particularly to the incorporation of monolithically attached components into such multilayer structures. Background technique [0002] Multilayer structures are usually formed from a core layer sandwiched between two face sheets. The core layer of the multilayer structure defines a substantial amount of air / void space and has an effective cross-sectional thickness substantially greater than the cross-sectional thickness of adjacent face sheets. Therefore, multilayer structures generally have relatively high strength and stiffness at relatively low weight. Accordingly, multilayer structures are used in various aerospace applications. [0003] Superplastic forming is used to make multilayer structures - such as expanded two-piece panels (without core) and expanded three-piece panels (core between two panels), which can be used as conventional honeycomb multilayer Alter...

Claims

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Application Information

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IPC IPC(8): B21D26/021B21D26/055B21D47/04
CPCB21D26/021B21D26/055B21D47/04B21D31/04B23K26/22B23K26/32B23K26/38B23K26/40B23K2101/006B23K2103/10B23K2103/166B23K2103/26B23K2103/14B21D26/053B23K20/127
Inventor M·R·马特森D·S·南森L·C·弗斯G·A·福尔茨
Owner THE BOEING CO