2014年9月7日 星期日

量測原理與機械工程實驗 (as a laboratory assistant)

Measurement and Mechanical Engineering Laboratory is a required course for junior students in the department of mechanical engineering at National Taiwan University. This course consists of miscellaneous topics of different fields such as material science, solid mechanics, thermal science, control, and fluid mechanics (see Fig. 1). Students can access equipment (or even build one on their own) which measures/demonstrates displacement, velocity, acceleration, force, torque, pressure, temperature, vibration, and other meaningful physical quantities.




Fig. 1 Posters for measurement and mechanical laboratory

As a laboratory assistant, Yu-Hsiu Lee was responsible for giving lectures on each topics and demonstrating all experiments. Also, he helped the instructional laboratory to get the accreditation of IEET (Institute of Engineering Education Taiwan). All figures shown here were his introductory posters for the laboratory.

Topics of this course comprised:

  1. Material Science: heat treatment, microstructure, hardness, tensile, and impact experiments
  2. Circuits & Electronics: op-amp circuits, Wheastone bridge, instrumentation amplifier, and charge amplifier realization
  3. Solid Mechanics: measurement of vibration using piezoelectric accelerometer, measurement of dynamic imbalance using proximity eddy current sensor, and measurement of buckling phenomenon using LVDT and homemade load cell
  4. Thermal & Fluid Experiments: gas and liquid flow field visualization, measurement of thermal boundary layer using thermal couple, measurement of heat capacity using thermal couple, measurement of air drag using load cell, measurement of terminal velocity using image processing software ImageJ
  5. Integrated Experiment: students were required to build their own load cell and displacement sensor, design a LabVIEW program which serves to both control a tensile testing machine and process data, thus obtaining stress-strain relationship of the specimen

沒有留言:

張貼留言