Feiran Sun

Feiran Sun
Tsinghua University | TH · Department of Mechanical Engineering

Doctor of Philosophy

About

8
Publications
667
Reads
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15
Citations

Publications

Publications (8)
Article
To make clear the mode conversion behavior of S0-mode lamb wave and SH0-plate wave converting to the longitudinal mode guided wave and torsional mode guided wave in a pipe, respectively, the experiments were performed based on a previous built pipe inspection system. The pipe was wound with an L-shaped plate or a T-shaped plate as the waveguide, an...
Article
Electromagnetic acoustic transducer (EMAT) is the core component of the electromagnetic acoustic technique, which has many advantages such as non-contact, not affected by the environment and easy to excite various types of ultrasonic wave etc. However, compared with the traditional piezoelectric transducer, the transduction efficiency of EMAT trans...
Conference Paper
In order to improve the ultrasonicwave amplitude excited by electromagnetic acoustic transducers (EMATs), many researchers have proposed models. But they always ignored displacement current or the effect of the permittivity of the air or the metal sample during modeling, due to its low permittivity. However, more durable dielectric materials are re...
Patent
Full-text available
一种培养基分装仪螺旋传动密堆孔板快速存取装置,属于培养基分装设备技术领域。该装置包括基座、驱动器、孔板盒、主动轴、从动轴、第一传动机构、第二传动机构、第三传动机构、第四传动机构、主动螺杆和从动螺杆。本发明装置采用驱动器、传动机构、齿轮机构和双螺杆机构等综合实现了孔板的存储和存取功能。该装置利用驱动器通过第一齿轮、第二齿轮、主动轮、从动轮、传动件带动主动螺杆和从动螺杆协同作用,实现底层孔板的存取;利用孔板盒实现孔板的存储。该装置用于培养基分装仪中,兼容性好,可操作不同规格的孔板;机械结构简单,对加工精度和安装精度要求较低;只需一个驱动器,控制系统简单;孔板在孔板盒中紧密堆放,空间利用率高。
Patent
Full-text available
分装仪密堆孔板立面倾斜轴带传动进出装置,属于培养基分装设备技术领域,包括基座、驱动器、孔板盒、第一支撑块、第二支撑块、第一主动轴、第二主动轴、第一从动轴、第二从动轴、第一传动机构、第二传动机构、第三传动机构和第四传动机构。本发明装置采用驱动器、立面倾斜轴带传动机构、双支撑块和孔板盒等综合实现了孔板的进出功能。该装置利用驱动器通过传动机构带动第一支撑块和第二支撑块协同作用,实现底层孔板的进出。该装置用于培养基分装仪中,兼容性好,可操作不同规格的孔板;机械结构简单,对加工精度和安装精度要求较低;只需一个驱动器,控制系统简单;孔板在孔板盒中紧密堆放,空间利用率高。
Patent
Full-text available
The invention provides a vertical face horizontal axis driving intensively stacked orifice plate storing and taking device of a distribution instrument, and belongs to the technical field of medium distribution equipment. The device comprises a base, a driver, an orifice plate box, a first supporting block, a second supporting block, a first drivin...

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Projects

Projects (3)
Archived project
Archived project
1. Pipe structural health monitoring by guided wave 2. To inspect a pipe whose working temperature is more than 500 degC