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成果報告書詳細
管理番号20170000000162
タイトル*平成28年度中間年報 次世代構造部材創製・加工技術開発 次世代複合材及び軽金属構造部材創製・加工技術開発(第二期)
公開日2017/4/20
報告書年度2016 - 2016
委託先名RIMCOF技術研究組合
プロジェクト番号P15006
部署名材料・ナノテクノロジー部
和文要約
英文要約Title: Development of Technologies for Next-Generation Structure Component Creation and Processing / Development of technologies for producing and processing next-generation composite materials and lightweight metals as structural elements (FY2016-FY2017) FY2016 Annual Report

In this project, the following three subjects are under development.
>Practical Use of SHM
>High Rate Process for Composite Structure
>Magnesium Alloys for Aircraft Structure
In addition, about SHM, “JASTAC-II”, the cooperative research project with Airbus, is also in progress. Summaries of each subject are as follows.

1. Practical Use of SHM
(1) Distributed Strain Monitoring System
BOCDA system can measure distributed strain and identify structural defects. Electrical parameter adjustment in a detector circuit of the system enabled high-speed four-point dynamic measuring at the speed of 1,000Hz in 200m range.

(2) Impact Damage Detection System for Composite Structures
The necessary functions of the optical fiber sensor based impact damage detection system were discussed with the airlines and with Airbus. Validation scheme including flight test is also being formulated through JASTAC-II framework.

(3) Lamb Wave-Based SHM Technology
A simulation on ultrasonic wave propagation have been developed. A CFRP flat panel without damages was used to compare simulation results with measurement data. Then the differences and the causes between simulation and measurement were clarified.

2. High Rate Process for Composite Structure
(1) Bolt-less Assembly
i) Basic process for bolt-less assembly: Prospect for adhesive strength improvement by surface modification of thermoplastic composite was obtained.
ii) Innovative part forming: Trial forming of test piece laminate plate by pre-form with thermoplastic resin and carbon fiber was performed.

(2) Rapid Forming Process Development for Composite Parts
The purpose of this program is to develop the innovative high-speed forming process using rapid curing CFRP material for high-rate production. Several candidate materials and parts were investigated. And the rapid curing material and L-shaped parts suitable for further study are selected.

(3) OoA hybrid co-cured wing box
To meet the high-rate and low-LCC composite production, design, fabrication process and test method have been investigated. OoA hybrid co-cured process was proposed, and material screening and process evaluation have been conducted. Basic test data to develop the high accurate test system for verification of integrity against lightning strike have been obtained.

3. Magnesium Alloys for Aircraft Structure
(1) Development of the KUMADAI Magnesium Alloys
The effects of alloy extrusion parameters on the mechanical properties at room temperature and the microstructure evolution were investigated in the production of high strength and non-flammable Mg-Al-Ca alloys. The optimum alloy compositions in quaternary Mg-Al-Ca-X for corrosion resistance was also determined.

(2) Development of Magnesium alloys for aircraft applications
As a result of static strength analysis using the tensile properties of KUMADAI nonflammable Mg alloy, it was confirmed that approximate 35% weight reduction could be possible as compared with existing secondary structure Al alloy parts.
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