成果報告書詳細
管理番号20160000000193
タイトル*平成27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 水素ステーション用複合容器の供用中検査手法の研究開発
公開日2016/8/25
報告書年度2015 - 2015
委託先名千代田化工建設株式会社
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Regarding hydrogen stations, it has been desired to establish a practical method regarding a non-destructive inspection for Type III-CFRP
pressure vessel in consideration with operation and maintenance of the station. We found that an acoustic emission (AE) as one of the inspection
method has relation with fatigue in aluminum alloy which is inner material of the vessel. In addition, a new parameter of AE has developed
in order to emphasize acoustic phenomena with the fatigue, which may depend on manufacturing conditions of the vessel. We are going to enhance
the practical method by using AE through getting of more experimental data in order to evaluate the vessel.

In fatigue experiments by using some test specimens, AE amplitude regarding a specific frequency band increases step by step during the test.
Especially, the amplitude increases at the timing of around 50% of the life before material brakes. The phenomenon of AE was almost same
in spite of test conditions regarding load and cycle speed.

On the other hand, a result of fatigue experiment by using the pressure vessel was slightly different from the test by specimen.
A higher AE amplitude may appear in spite of condition with low fatigue at the beginning of the test.

Therefore, a new parameter was developed with cycle test for settlement of the above issue in order to evaluate the fatigue of the vessel.
As a result of some experiments, it has become clear that the parameter can be useful to indicate a status of the fatigue.

As additional issues, we found that residual compressive stress and initial defects of the vessel affect to the evaluation by AE.
These conditions of the vessel depend on products and quality of each manufacturers.

We are going to continue our study by various experiments with more AE data at the next stage in order to develop a practical evaluation
method against the fatigue.
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