DESIGN LAB
Overview
The objective of this lab is to impart practical knowledge on design and analysis of mechanisms in the machine tools. Design lab demonstrates the concepts related to Mechanical Vibrations, Governors, Balancing of Rotating Masses, Journal Bearings, Photo elasticity, Strain Gauges etc. This lab is useful for research work related to Vibrations and Experimental Stress Analysis.
Laboratory Area: 190 Sq. Mts
Laboratory Expenditure: Rs. 9,96,499.00
Major Equipments
| Equipment Name | Specifications |
|---|---|
| Damped and Undamped Vibration System for Longitudinal and Torsional Vibration | Total mass attached on spring m=4.2 kg, Length of the spring without mass L1=100 mm, Length of the spring with mass L2=215 mm, Speed of rotation n=10 rpm, Spring-mass system Mass of the pan =0.08181 kg, 2 number of springs with different stiffness, Diameter of shaft: Different diameters, Modulus of rigidity of the steel shaft G=80×10^9 N/m^2, Length of the shaft: Different lengths, Diameter of rotor disc D=300 mm, Mass of disc m=3.9 kg, Diameter of shaft d=5 mm, Length of the shaft L=920 mm, Diameter of rotor disc D=210 mm, Mass of the disc m=5 kg, Modulus of rigidity of the shaft G=80×10^9 N/m^2, Material of the shaft: Steel |
| Whirling of Shaft Apparatus | Product: Whirling of Shaft; Product Code: VIB – 04; DC Motor: 240 volts, Frictional HP, 5000 rpm, 50 Hz; Dimmer Stat: Closed type, 2 Amps, 240 Volts and 50 Hz; Frame: 1250 x 240 mm, MS fabricated with powder coating; 1 inch GI pipes, 2 numbers; Shaft diameter: Different diameters |
| Balancing of Rotating Mass Apparatus | Shaft: MS, length 180 mm; Bearing: Ball bearing; Rope Pulley: 1 number; Motor Pulley: 1 number; Masses: 4 numbers - 248, 241, 229 and 219 grams; Radius: 20.5 mm, 22.7mm, 19.12 mm and 18.8 mm; Motor: Voltage 220 ± 15 %, 1/12 HP, 7500 rpm, Scale: Angular scale in degrees |
| Polariscope | Field Size: 300 mm diameter; Polariscope Plates: Linear Polarised; Quarter wave plates: Retardation between 2 light vectors 140 ± 2 µ; Light Source: Sodium Vapour Lamp, Metal Halide Lamp; Loading Frame: Tension, Compression and Bending; Integrated control Unit: EFFICIENT make; MCB: 2 pole, 06 Amps, 240 VAC; Diametrical Compression: Distance a=212.5 mm, Distance b=312.5 mm, Diameter of the disc d=62 mm, Thickness of the disc h=6 mm, Magnification factor m=1.47; Four point bending: Depth of beam model d=32 mm, Moment arm x=25 mm, Thickness of beam model h=6 mm, Magnification factor m=1.47; Plate with hole: Width of the model w= 32mm, Diameter of the hole d=10 mm, Thickness of the plate h=6 mm, Magnification factor m=1.47 |
| Governor Apparatus | Motor: D. C. Motor, ½ HP. 1500 RPM; Length of each link l=140 mm, Length of each arm la=140 mm, Initial height of governor h0=120 mm, Initial radius of rotation r0=140 mm, Mass of the sleeve assembly M=1.7 kg, Scale: Scale for sleeve displacement; Motor: D. C. Motor, ½ HP. 1500 RPM; Length of the vertical a=70 mm, Length of the horizontal b=120 mm, Initial radius of rotation r0=140 mm, Mass of the sleeve assembly M=1.7 kg, Scale: Scale for sleeve displacement |
| Journal Bearing Apparatus | Journal: MS of diameter 50 mm with hard chrome plating; Bearing: MS diameter 52 mm with 12 radial and 4 axial Tappings; Balancing Weights: MS 2 numbers with hard chrome plating; Weight set: 3 numbers weights; Frame: MS fabricated with Powder coating; Manometer board: Wooden board of 250 cm height with 16 plastic tubes and scales mounted on it; Recommended oil: Lubricating oil SAE 30/40; Diameter of Journal d=50 mm, Diameter of bearing D=52 mm, Radial Clearance c=1 mm, Length of bearing L=85 mm |
| Rosette Strain Gauge Apparatus | Specimen Material: Steel; Diameter of shaft d=25 mm, Length of loading arm l=1000 mm, Length of the shaft L=270 mm, Young’s modulus E=210 GPa, Rigidity of modulus G=73 GPa, Poison’s ratio ν=0.3, Digital Indicator: 3 channel for each rosette element. 0 – 2000 m VDC, Rosette Gauge: Rectangular Rosette |
| Curved Beam Setup | Frame: Mild Steel; Rectangular beam: MS, thickness 5 mm, width 25 mm; Closed ring: MS, thickness 5 mm, width 25 mm; Micro Strain Indicator: EFFICIENT made; Dial Indicator with magnetic base stand: MITUTOYO made, range 0.01 – 10 mm; Width of beam b=25 mm, Height of the beam h=5 mm, Outer radius of beam ro=225 mm, Inner radius of beam ri=220 mm, Radius of centroidal axis rc=222.5 mm, Young’s modulus E=210 GPa |
| Gyroscope | Mass of rotor W=5.7 kg, Rotor diameter d=290 mm, Rotor thickness t=11 mm, Distance of bolt of weight pan from disc center l=200 mm, Diode: 4 amp, Bridge type; Universal Motor: AC / DC Fractional H.P. single phase. 6000 rpm; Speed Indicator: RC2100, 4 – 9999 rpm, 12 VDC, 30 m; Proximity Switch: M12, Max load- 30 mA, 10 – 30 VDC; Dimmer: 2 Amp – open type, 230 VAC; Glass Fuse: 4 Amp, 5 mm diameter, 20 mm length |
Laboratory Layout
Photos
