Technolab Associates

Madh, Mumbai, Maharashtra

This set up has been designed to perform and verify the principles involved in study of vibrations. It consists of a basic frame and various components and sub assemblies designed for quick changeover and easy assembly of number of experiments in vibrations. A speed controller unit is provided for forced vibration experiments.

With this unit following experiments can be conducted

Pendulum Experiments For Pendulum a sub frame is attached to upper beam. Two Chucks and Hardened V guide is provided for carrying experiments.

Experiment - 1 - Simple Pendulum
To verify the relationand plot graph T Vs. L
Experiment - 2 - Compound Pendulumi) To verify the relation
ii) To determine the radius of gyration and equivalent length of compound pendulum.
Experiment - 3 - Bi-filler Suspension( Tortional Oscillations) To determine the radius of gyration of body about the center of gravity by using relation

Longitudanal Vibration - Experiment -4To verify the relation -
and plot graph T Vs. W
Experiment - 5 Equivalent spring mass systemStudy of un damped natural vibrations of beam pivoted at one end supported by tension spring at the other end.
Experiment - 6 Equivalent spring mass systemStudy of undamped natural vibration of beam pivoted at one end supported by tension spring at the other end to plot a graph of amplitude verses frequency.
Torsional Vibrations - Experiment - 7 - Single RotorTo verify the relation -
and study the relationship between the periodic time and shaft length.
Experiment - 8 - Two RotorTo verify the relation -

Experiment - 9 Single Rotor with viscous damping -To find out the damping coefficient Ct for various depths of damping drum (Immersed in oil) and to plot a graph of damping torque Vs. depth of damping drum.Experiment - 10 - Dunkerley`s RuleTo find out the natural frequency of a beam with and without load and to verify the Dunkerley`s RuleExperiment - 11 - Forced VibrationsTo study the forced vibrations for various amount of damping and to plot a graph of amplitude verses frequency. Following accessories will be supplied along with unit. - Exciter unit with FHP motor and controller. Ordinary strip chart recorder. Damper with an arrangement for changing damping.

• A hydraulic flume of c/s 200x300 mm & 4000 mm length with transparent window on either sides of 1000 mm length.
• Sliding gates one at upstream and other at the downstream side.
• Screw jack for change of the slope of the flume.
• A Sump tank of sufficient capacity.-1250 x 1800x 500mm (1000 lit approx)
• Supply tank with waves damping arrangement.
• A 2 H.P. centrifugal monoblock pump.- laxmi make
• A Orificemeter with manometer to measure the discharge. Inlet/throat dimensions: 50/28 mm respectively.
• Trolley with point gauge for level measurement.
• Models supplied:A) Weirs- i) Sharp crested weir (crest length 200 mm)ii) Broad crested weiriii) ogee weir or spillway.iv) Venturi flume

The unit consists of flow channel of proper length & width. The notch or weir is fitted; water supply is given at one end of channel. Water flow over notch or weir. Arrangement are made to measure the still level to determine the ead.

FEATURES

• Interchangeable Brass/Aluminium notches.
• Measurement of head by scale.

SPECIFICATION

• Flow Chanel 200 x 200 x 1200 mm made from crc sheet with powder coating
• Notches 60⁰included angle "V" notch - material brass
• Rectangular notch.- material - brass
• Notch interchanges arrangement.
• Sump Tank of size 900 X 400 x 400 mm with FRP lining to inside
• Discharge Measuring Tank - 300 X 400 X 300 mm with FRP lining to inside
• Pump - 0.5 HP , Kirloskar Make.

RANGE OF EXPERIMENTS

To determine coefficient of discharge through
• 60⁰"V" notch
• Rectangular notch.

SERVICE REQUIRED

• Water supply.
• Suitable floor space of 2 m. x 2 m.