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Thin ply laminates

A thin-layer, composite material technology, applied in the field of fiber composite materials, can solve problems such as high cost, unreliability, and reduced in-plane characteristics

Inactive Publication Date: 2012-06-27
ITOCHU CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

They have at least two disadvantages: they can be more expensive, and their in-plane properties are reduced, creating room for out-of-plane fibers
This method is not expensive, but it is not yet reliable
Stitching causes additional damage to composite laminates

Method used

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  • Thin ply laminates
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Examples

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Effect test

example 1

[0038] Example 1: An example of the invention comprising a combination of a thick layer with a thickness of 0.12 mm and a thin layer with a thickness of 0.02 mm. this is in Figure 6A is shown as having a thin layer 21 and a thick layer 23 . and, Figure 6B The sublaminate 25 in can be a mix of thick and thin, with one thick layer [0] 27 and one thin layer [90] 29 . The total thickness of the sub-laminate module can be 0.12mm+0.02mm=0.14mm, then the percentage of [0] should be 0.12 / 0.14=86%. The use of such sub-laminates in the construction of masts or booms will provide a highly anisotropic structure with a rigidity not achievable using only thick layers of ordinary laminates. For common laminates, repeating modules for thick layers must have 9 layers [0] and 1 layer [90]. The thickness of the total sub-laminate module will be 1.20mm, where the percentage of [0] is equal to 90%. The design stacks 9 layers of [0] together, which is a poor design from a rigid standpoint. ...

example 2

[0039] Example 2: When a higher percentage of [0] is desired, there can be two thick layers of [0] followed by a thin layer of [90]. At this time, the percentage of [0] should be 0.24 / 0.26=92%. In a three-directional sub-laminate module with two [0] and one [+ / -45], the [0] percentage is 0.24 / 0.28 = 86%. These two examples would allow a more rigid laminate for the mast or boom. This hybrid structure is also used in drive shafts, reeds and sporting goods (eg pole vault poles, hockey sticks, golf clubs, etc.).

example 3

[0040] Example 3: Another example of a thick and thin ply laminate is a three-way sub-laminate with one 0.12mm thick ply [0] and two 0.02mm angled plies [+ / -30] or [+ / - 45], such as [+30 / 0 / -30] or [+45 / 0 / -45] modules. The total sub-laminate has a thickness of 0.16mm and it can be done as a single step in the descent of the plies. Three-directional modules of any combination of thick and thin layers can be fabricated. This design flexibility enables products with significantly improved laminate properties and significant cost savings in manufacture.

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Abstract

Fiber composite materials using thin plies with a thickness of less than 0.08 mm provide improved delamination resistance and thinner minimum gauge for laminates. Thin plies may be hybridized with conventional plies, interlaced for strength, and used with adhesives as reinforcement in bonding.

Description

[0001] This application is a divisional application of an invention patent application named "thin-layer laminated material", the international application date is September 23, 2005, the international application number is PCT / US2005 / 034961, and the national application number is 200580032157.1. [0002] Cross References to Related Applications [0003] This application claims priority from US Provisional Application No. 60 / 612740 (filed September 24, 2004) and US Provisional Application No. 60 / 668341 (filed April 4, 2005). technical field [0004] The present invention relates generally to fiber composite materials, and more particularly to composite materials using ply to obtain improved physical properties and methods of making the same. Background technique [0005] Common layers of composite material (impregnated or not impregnated with resin) are at least 0.12 mm thick. Laminates of composite material layers are formed by stacking together unidirectional layers follo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B9/04B32B7/12B32B15/14
CPCB32B5/12B29C70/885B32B2605/18B32B7/12B32B15/14B32B2603/00B32B5/024B32B2307/54B32B15/00B32B2262/106B32B15/20B29C70/22B32B7/02B32B5/06B32B3/12B32B2307/5825B32B5/26B32B2307/718B32B2305/076B32B5/10B29C70/202B32B2250/42B32B2419/00B29C70/088Y10T428/24975B31F1/07
Inventor 史蒂芬·W·柴川边和正
Owner ITOCHU CO LTD
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