Experimental systems available in this laboratory include a cam-follower mechanism, a rotating mass, a shaker driven rim reinforced membrane, an impact driven visco-elastic plastic bar, a large gyroscope and a system of masses and springs. The experiments can respectively examine cam-follower failure due to separation, inertial forces and impacts, two-plane balancing, non-linear resonance and the jump effect, dynamic stiffness and damping, precession and nutation, and modal frequencies and shapes. Experimental methods available include sweep sine and impact excitation, frequency analysis using sampled time signals, and discrete Fourier transforms. Accelerometers, impact hammers, impedance heads, linear-variable displacement transformers, optical, and Hall effect transducers are available in combination with conditioning amplifiers and filters. Data acquisition and analysis is done using both traditional methods such as taking manual readings from frequency analyzers and oscilloscope hardware and more modern techniques using LabView and Matlab virtual instrumentation.

Room: Packard 277

Faculty Contact: N. Duke Perreira (ndp0@lehigh.edu)

Associated Courses: ME 207, ME 208

Dynamic Systems Laboratory