成果報告書詳細
管理番号20140000000159
タイトル*平成25年度中間年報 水素利用技術研究開発事業 燃料電池自動車及び水素供給インフラの国内規制適正化、国際基準調和・国際標準化に関する研究開発 自動車用圧縮水素容器の基準整備・国際基準調和に関する研究開発
公開日2014/5/2
報告書年度2013 - 2013
委託先名国立大学法人茨城大学
プロジェクト番号P13002
部署名新エネルギー部
和文要約
英文要約Title: Research and Development Project for the Usage Technology of Hydrogen. Research and Development on Optimization of Domestic Regulation, International Standard Harmony, and International Standardization. Research and Development on Standard Maintenance and International Standard Harmony for Compressed Hydrogen Gas Containers for Automobiles (FY2013-FY2017) FY2013 Annual Report

In recent years, fossil fuel exhaustion and global warming have become one of the most serious environmental problems in the worldwide scale. There is a growing trend toward using hydrogen, which is the cleanest energy source, as one of the solutions. Especially, hydrogen fuel cell vehicles (FCVs) are being investigated and developed actively. Currently, various devices such as the container for hydrogen storages, valve housing and piping are mounted in the FCV. The cost reduction of the materials for these devices is demanded for the spread of FCVs.
As for the container for hydrogen storages of FCV, type-3, combination of the outer CFRP (carbon-fiber reinforced plastic) and the inner aluminum liner is one of the main choices. Currently, the aluminum permitted to be used is only 6061-T6. It is demanded that some aluminum alloy with higher strength is used and reduce the cost by reducing the amount of the CFRP surroundings. Since assessment method has not been established yet for the liner aluminum materials, sustained load cracking, SLC, test is claimed to be one of the evaluation methods. The SLC is a phenomenon that a crack propagates with time with static tensile load. In this study, SLC, examination on 6061-T6 and 7075-T6 aluminum alloys under moist and dry air were performed. Compact tension, CT, test pieces were cut in T-L direction. After fatigue pre-crack was introduced, static tensile load was applied to the test piece according to the regulation for 90d, followed by another fatigue load and final rapid tensile load. It was found, from the observation on the final fracture surface of the 6061-T6 alloy tested in dry air, that the length of SLC was 0.14mm in accord to the acceptable criterion.
ダウンロード成果報告書データベース(ユーザ登録必須)から、ダウンロードしてください。

▲トップに戻る