Mechanical Engineering Labs

Computer aided Design Lab

A brief introduction: Computer aided lab help to inculcate the design skill among the students of Mechanical Engineering stream. In this lab students improve their design dexterity by design software’s. Design of parts is a cumbersome task in the traditional regime. Traditionally, first design the part and then produce prototype to analyses its performance. But now day each activity of design and analysis performed online by using computer. Design activity comprises selection of material, shape, and aesthetics of part where as the analysis and simulation technique related to performance investigationof part. To investigate the performance of part under service conditions different analysis viz. stress strain, heat transfer etc. are performed. If some problems persist in designing of part, then modify it repeat the process of analysis and simulation.

Software& Hardware available in lab:

SolidworksStudent Edition 2009-10 : 30 user network standalone license
Pro-Engineer Student University Edition 2008-09 : 499 user network standalone licenses
Inventor Professional Student Edition 2008-09 : 05 standalone licenses
HP Computer (No.) : 30
HP Plotter (No.) : 01

Strength of Material Lab

Introduction: Properties of the materials are very important in the process of designing the durable components / machines / structures etc. These properties include mechanical properties, thermal properties, electrical properties, optical properties or magnetic properties or deterioration properties. Mechanical engineers are mainly concerned with the mechanical properties like strength, ductility, hardness, brittleness, toughness, creep, fatigue strength of the materials. These properties play an important role for the structures and components that are intended to sustain various type of loads under the given service conditions. Different applications need specific mechanical properties. Sometimes hardness is required at the surface of the components, like gears, to make them wear resistant and sometimes toughness is required to resist impact loading. One of the principle concerns ofan engineer is the analysis of materialsused in structural applications. The termstructure refers to any design that utilizes materials that support loads and keeps deformation within acceptable limits. Designing machines, structures, and vehicles, which are reliable as well assafe and cost effective, requires a proper knowledge of engineering as well as material selection.
      Elementary strength of materials is the physical science that looks at the reaction of a body to movement and deformation due to mechanical, thermal, or other loads. The basis of virtually all mechanical design liesin how the material reacts to outside forces. Mechanics is the core of engineering analysis and is one of the oldest of the physical sciences. The basis of structural design is simply todesign a component where the stress does not exceed the strength of the material, causing failure.
      Material failures may be time dependant such as creep or fatigue failure due to cyclical loading, or failures may be time independent where static loading causes rapid fracturing ofthe material. Some members rely on deformations to function, such as a spring, but an excessive amount causing permanent changes is typically avoided. Materials capable of sustaining large amounts of plastic deformation are said to behave in a ductile manner, those that fracture without much plastic deformation are said to behave in a brittle manner. In this laboratory, students will have the opportunity to applyloads to various materials under different equilibriumconditions.
      This laboratory provides the know-how of the mechanical properties of the materials through various experiments on testing machines and equipments. Mainly destructive testing is used to determine different mechanical properties of the given specimen. The student will performtests on materials in tension, torsion, bending, and buckling. These conditions and/or constraints are designed to reinforce classroomtheory by having the student performrequired tests, analyze subsequent data, and present the resultsin a professionally prepared report.

Various equipments present in Strength of Materials lab:

S. No.

Name of the Article


Universal Testing Machine
Electronic microprocessor based digital indicator, Capacity 40 Tonnes, least count (Resolution) 4kgf on the entire rated capacity of the machine,
Accessories: 1. Clamping jaws for testing round and flat test specimens under tension tests, 2. A pair of compression platens, duly hardened, ground and polished, with the bottom platen provided with guide-lines for placing the test specimen co-axial with the hydraulic RAM, 3. Load cell extensometer with ring for calibration complete, 4. A table with adjustable rollers complete with mandrel for conducting bending/transverse tests.               5. Double shear test block and bush,                 6. Load stabilizer.


Impact Testing Machine
Capacity 30 kgm(300jules), least count 0.2Kgm, complete with strikers for conducting IZOD and CHARPY TESTS.


Fatigue testing Machine
Complete with jigs and fixtures mounted an elegant table with motor, weights, electronic digital revolution counter.


Torsion testing Machine
Capacity 200 kgf, (Mechanical)


Spring Testing Machine
Capacity 2000 kfg, Contraption for holding tension spring and a pair of compression platens for holding compression.(Hand cum electrically operated)


Vickers Hardness Tester: Capacity 50 kgf, Vickers microscope, Vickers conversion table, Vickers pyramid indentor.


Rockwell Hardness Tester: Capacity 150 Kgf, Ball and Diamond indentor, Test blocks, Scales (A, B and C).


Brinell Hardness Tester: Capacity 3000 Kgf, Balls of 5mm and 10mm diameter, Test blocks, Ball holder, Brinell Microscope with illuminating arrangement and BHN conversion Table.

Dynamics of Machine Lab

Following are the important equipment in Dynamics of Machines lab

Gyroscope apparatus Governor apparatus Static and Dynamic Balancing apparatus
Cam profile analysis apparatus Epicyclic gear Torque measuring apparatus

Refrigeration & Air condition Lab

Theory of creating cooling effect, studied in RAC subject, is demonstrated practically in RAC lab. A large number of working test rigs to understand practically used refrigeration systems and air-conditioning systems are available. The performance analysis of these systems is made in the laboratory classes. Bulky systems like cold storage, ice plant etc. are also available in the lab. Cut-sectional models of the intricate parts are also available for complete understanding.

List of equipment and their use Refrigeration & Air Conditioning Lab.:

S. No. Name of Equipment
1 Electrolux Refrigerator Test Rig
Performance analysis can be made on this test rig working on vapour absorption refrigeration system. Electrolux refrigerator is one of the oldest method of producing refrigeration effect from heat.
2 Mini Cold Storage Plant Test Rig
Performance analysis can be made on this test rig to calculate coefficient of performance.
3 Mechanical Heat Pump Test Rig
The test rig demonstrate the system of getting heat from a refrigeration system. The performance analysis can also be made of the heat pump system.
4 Cascade Refrigeration System Test Rig
The test rig demonstrates the principle of cascade refrigeration system in which two vapour compression refrigeration systems are used to create very low temperatures. Performance analysis can be made on the test rig.
5 Ice Plant Test Rig
Practically used vapour compression refrigeration system in ice plant is well demonstrated in this test rig and the performance analysis can also be made on this.
6 Evaporative Condenser Test Rig
Evaporative condensing unit generally used in large RAC systems is well demonstrated through this test rig.
7 Refrigeration Test Rig
The working principle of refrigerator with its performance analysis can be well understood through this test rig.
8 Cooling Tower Test Rig
Cooling tower used in large RAC systems is well demonstrated in this test rig with performance analysis.
9 AC Test Rig
Working principle of window AC and its performance analysis can be made on this test rig.
10 Different Evaporators: Tube in Plate type, Plate and Tube type, Tube within Tube type, Fins and Tube type, Emmersion type.
11 Different Condensers: Wire Mesh type, Emmersion type, Fins and Tube type, Tube within Tube type.
12 Cut Sectional Hermetically Sealed Compressor
13 Gas Charging Station
Filling of refrigerant in any refrigeration system is demonstrated on this equipment.
14 All Equipment used in the Installation of any Refrigeration or Air-Conditioning System: Tube Cutter, Tube Flaring Tool, Tube Bending Devices, Sealing Devices etc.
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