Through the experimentation of the noncrystalline alloy transformer , theoretical analysis and calculation of its finite element model ,and analyzing and exploring the vibration and noise source of the transformer, we choose the signal of the transformer vibration and noise to experiment in different frequency, receive datas ,analyze them and finally draw a conclusion that the experimental way and theoretical way have the same result that the transformer noise is not from current noise ,but from the up clamp structure which accepts prompting vibration radiating noise . That conclusion has a factual instructive suggestion for reducing transformer noise further.

With the development of cryogenic technology, cryogenic liquid products are important in many fields. As representative for fluidconveying tools,pipes are widely used in industry fields. But fluid structure interaction in working liquidfilled pipes, and the vibration characteristic in cryogenic fluidconveying pipes, which have been extensively studied in the academic and engineering communities. In this paper, the typical achievements in the research field were summarized and reviewed.