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Surrogate patch for composite repair process

A patch and composite structure technology, applied in the application of thermometers, material analysis through electromagnetic means, instruments, etc., can solve problems such as time-consuming, expensive materials, and labor-intensive

Active Publication Date: 2012-09-19
THE BOEING CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] Unfortunately typically a conventional dry cycle takes more than 24 hours to complete and this exceeds the amount of time available to perform rework operations in the field (eg on an aircraft in service)
Additionally, the traditional practice of performing thermal survey and drying cycles as two separate processes will result in two heating cycles being applied to the composite structure, which will impact service life
Further, conventional thermal surveying requires a labor-intensive and time-consuming fabrication process of manufacturing a traditional surrogate patch, which is then discarded after one use
As such, the materials used to form the composite surrogate patch are relatively expensive depending on the amount and type of material used

Method used

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  • Surrogate patch for composite repair process
  • Surrogate patch for composite repair process
  • Surrogate patch for composite repair process

Examples

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Embodiment Construction

[0115] Referring now to the accompanying drawings, wherein the drawings are only for illustration of preferred and different embodiments of the present invention and are not intended to limit the embodiments, figure 1 Shown is a perspective view of composite structure 10, and can be used as Figure 4-9 The surrogate patch assembly implements the repair process on the composite structure 10 . More specifically, preparing the rework area 20 may include a thermal survey and / or moisture removal process, which may employ a surrogate patch assembly 50 as described herein and made from low cost materials in a relatively short period of time ( Figure 4-9 ), which will be described in more detail below.

[0116] exist Figure 1-2 In this example, a composite structure 10 may include a skin 14 formed from plies 12 of composite material, where the skin 14 may have an upper surface 16 and a lower surface 18 . Composite structure 10 may include a reworked area 20 formed within skin 14 ...

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Abstract

A surrogate patch assembly for a rework area of a structure comprises a surrogate patch body which may be formed of a material for drawing moisture from the rework area. The patch assembly may include a sensor mounted to the surrogate patch body. The sensor may comprise a thermal sensor for sensing the temperature of the rework area and the surrogate patch body. The sensor may comprise a moisture sensor for sensing moisture drawn into the surrogate patch body.

Description

technical field [0001] The present invention relates generally to structural repair and, more particularly, to operations performed in preparing composite structural repairs. Background technique [0002] Composite materials are increasingly being used in a wide range of applications. For example, commercial aircraft incorporate increasing amounts of composite materials into primary and secondary structures due to the good mechanical properties of composite materials. Such good performance translates into weight savings while increasing payload capacity and fuel efficiency. Additionally, composite materials may provide an aircraft with an extended service life as compared to an aircraft formed from metal construction. [0003] Rework on composite structures is occasionally required to remove inconsistencies. Inconsistencies may include cracks, peels, voids, dents, porosity, or other inconsistencies in the composite structure. When the inconsistency is outside the ideal t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C73/10B29C73/16
CPCB29C73/163G01N27/00G01N33/00G01K13/00B32B43/00B29C73/10B29C73/26B29C73/12B29C73/34
Inventor M·W·伊文斯M·N·沃特森M·H·瓦尔加斯
Owner THE BOEING CO
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