成果報告書詳細
管理番号20150000000177
タイトル*平成26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2015/6/25
報告書年度2014 - 2014
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1.1 Introduction
The fatigue tests of Type III-CFRP Pressure vessel were executed from the standpoint of operation regarding Hydrogen station. In connection with an experiment using plate specimen, the configuration of specimen was considered in order to find out some differential of concentration in fatigue.

1.2 Study of acoustic emission by using aluminum alloy fatigue test specimen
The tensile and compression test was applied to the plate specimen of aluminum alloy with elastic region. In addition, AE data by hour-glass test specimen was collected. We found that the frequencies of AE between 200 Hz and 300 Hz are useful for evaluation of fatigue in aluminum alloy. The AE parameter increased with expanding the fatigue area of plate specimen.

1.3 Study of acoustic emission by destruction of CFRP
The tensile test was executed on the test pieces of CFRP with a notch. The AE characteristics regarding destruction of CFRP are below 100Hz which is different to the ones of fatigue in aluminum alloy. We can find the fatigue in aluminum alloy by the AE characteristics from among some noise including AE occurred in CFRP.

1.4 Study of acoustic emission regarding fatigue test for Type III-CFRP Pressure vessel
Measurement under an experiment regarding fatigue test for Type III-CFRP Pressure vessel by JPEC has been executed in order to identification of AE by fatigue on the assumption that hydrogen station is operated in future. Acoustic Emission which might be due to the fatigue crack was occurred in early timing of remaining life of the material.

1.5 Conclusion
As a result of the various test, frequencies of AE between 200 Hz and 300 Hz are useful for evaluation of fatigue in aluminum alloy. It is a possibility that the occurrence behavior of AE by fatigue in aluminum alloy depends on the condition of manufacturing. Therefore, we need more experimental data at next stage in order to confirm the detail characteristics of AE with the fatigue.
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