Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7721631 | International Journal of Hydrogen Energy | 2013 | 5 Pages |
Abstract
A magnetostrictive/piezoelectric drum magnetoelectric transducer has been fabricated for H2 detection. Due to the difference in the acoustic wave velocity for H2 (1284Â m/s) and air (331Â m/s), the resonance frequency of the magnetoelectric coupling effect will shift when H2 gas enters the drum cavity filled with air. A good linear relationship between the resonance frequency shift (Îf) and the volume fraction of H2 (n%) is observed. The resolution on the H2 volume fraction of our magnetoelectric drum detector was experimentally observed as â¼0.25%. The detection coefficient (Îf/n) for H2 volume fraction of our ME drum transducer is approximately equal to â¼0.48Â kHz. The magnetoelectric drum is hopeful for H2 physical detection.
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Authors
Yanmin Jia, A'Xi Xue, Zhihua Zhou, Zheng Wu, Jianrong Chen, Ke Ma, Yihe Zhang, Jiayi Zhou, Yu Wang, Helen Lai Wa Chan,