Features
Demonstration  of  fundamental  aspects  of mechanical vibration
Damping and resonance with forced vibrations
Two different principles of exciting vibration
Tesca Free & Forced Vibration Apparatus is an experimental unit based on the theory that vibrations are rapidly and securely assembled on a double profile frame made of aluminum using slot nuts and clamping levers. The oscillator consists of a beam mounted in ball bearings at one end; a helical spring is hung on the other end of the beam. The attachment of springs, the exciter and a damper to a perforated panel permits a wide range of different set-ups to be reproduced. Either an unbalance exciter or a displacement exciter generate vibrations; the frequency of the vibrations can be adjusted using the electronic control unit. The displacement exciter can be fitted directly to the base of the spring. The vibrations can be damped using the adjustable viscosity damper. To record vibration processes over time, a mechanical drum plotter is included. The experiment also includes an amplitude contact with a TTL output, e.g. for triggering stroboscopes.
The measured values can be evaluated with the software for data acquisition(optional). A practice set for torsional vibrations is available as accessories.

Specifications
Basics of mechanical vibration, natural damped and forced vibrations
Bar-type oscillator
Three helical springs
Unbalance exciter with DC motor, 0,77kg
Displacement exciter with DC motor
Electronic control unit with digital display, exciter frequency adjustable
Oil-filled damper
Electrically driven drum recorder
Amplitude meter  with  electric contact  for triggering equipment

Technical Specifications
Bar-type oscillator: LxWxH: 700x25x12mm, 1,6kg
Helical springs
-  0,75N/mm
-  1,5N/mm
-  3,0N/mm
Exciter  frequency:  0...50Hz,  electronically controlled
Unbalance    of    the    unbalance    exciter: 0...1000mmg
Stroke of the displacement exciter: 20mm
Damper constant: 5...15Ns/m, oil-filled
Mechanical chart recorder

Feed: 20mm/s
Paper width: 100mm Experiment Possibilities Ÿ Natural vibration
Damped vibration
Inertia force and displacement excitation
Forced vibration
Resonance
Amplitude and phase response

Scope of Delivery
1 frame
1 bar-type oscillator
3 helical springs
1 unbalance exciter
1 displacement exciter
1 exciter control unit
1 damper
1 amplitude meter
1 drum recorder
1 storage system with foam inlay
1 manual