This course explains mechanical properties of solid and liquid materials.
Understand the meaning of deformation, and mechanical properties like stress~strain graphs, brittle breakage like glass and cast iron, surface tension, viscosity of fluids, Bernoulli’s principle.
Following topics are covered:
1) Introduction to Elasticity
2) Types of Stress and corresponding strains – Longitudinal (tensile & compressive), Shear, Volumetric
4) Hooke’s Law and Young’s Modulus of Elasticity
5) Stress~strain graph- Tensile, Ductile material and Brittle material
6) Work Done and Potential Energy (Elastic Potential energy equation derivation)
7) Practical Experiment to find Young’s Modulus
8) Poisson’s ratio
9) Relationship between Poisson’s ratio and Young’s Modulus, Shear Modulus, Bulk Modulus
10) Surface Tension in a liquid : adhesion, inter-molecular cohesion, potential energy
- Height of liquid column – equation derivation
11) Surface Tension: case of steel needle floating on water: Equation derivation
12) Parallax Errors in readings due to surface tension
13) Contact Angle: concept and examples > a) water in glass tube, b) mercury in glass tube
14) Cohesion versus Adhesion and Potential Energy for a liquid in a tube
15) Adhesion forces explanation of Contact Angle for cases :
- water in glass tube
- mercury in glass tube
- mercury in Copper tube
- water on paraffin Wax flat plate
- water in a Silver vessel
- water on a Lotus Leaf.
16) Capillary tube
17) Capillary action in nature: example of a flower
18) Equation derivation: Height of Capillary in a capillary tube
19) Viscosity : an introduction
20) Velocity gradient concept
21) Co-efficient of viscosity
22) Dimensions of co-efficient of viscosity
23) Bernoulli’s Principle: liquid flow
24) Stoke’s law and equation
25) Terminal Velocity for object moving through a fluid
26) Stokes method: Practical Experiment to measure co-efficient of viscosity
27) Reynolds number
Course Features
- Lectures 36
- Quiz 0
- Duration Lifetime access
- Skill level All levels
- Language English
- Students 194
- Certificate No
- Assessments Yes
- 1 Section
- 36 Lessons
- Lifetime
- Mechanical Properties of matter36
- 1.1Elasticity – an introduction
- 1.2Types of Stress and corresponding Strain
- 1.3Hooke’s Law and Modulus of Elasticity
- 1.4Longitudinal stress versus strain graph – Ductile material (Mild steel)
- 1.5Stress versus Strain graph – BRITTLE materials (Cast Iron)
- 1.6Practical setup – A Universal Testing Machine -for Tensile strength and Compressive strength
- 1.7Energy Absorption – Modulus of Resilience and Modulus of Toughness
- 1.8Calculate Work done and Elastic Potential Energy
- 1.9Poisson’s Ratio – different from Young’s Modulus
- 1.10Relation between Poisson’s Ratio and Young’s Modulus, Shear Modulus and Bulk Modulus
- 1.11Surface tension
- 1.12Surface Tension- Concept ,equation, Steel Needle floating on water
- 1.13Parallax Error in readings- due to Surface Tension
- 1.14Contact Angle – concept and examples
- 1.15Cohesion versus Adhesion, and Potential Energy
- 1.16Contact angle-Water in glass tube
- 1.17Contact angle- Mercury in glass tube
- 1.18Contact angle- Mercury in copper tube
- 1.19Contact angle- water on paraffin wax plate
- 1.20Contact angle- water in a Silver vessel
- 1.21Contact angle- water with Lotus leaf
- 1.22Capillary tube
- 1.23Capillary action in nature
- 1.24Equation – Height of liquid in capillary tube
- 1.25Viscosity – an introduction
- 1.26velocity gradient
- 1.27co-efficient of viscosity
- 1.28Dimensions of co-efficient of viscosity
- 1.29Bernoulli’s Principle – liquid flow
- 1.30Stoke’s Law – for Viscous Drag
- 1.31Terminal velocity
- 1.32Practical Experiment – measurement of Co-efficient of Viscosity – Stokes method
- 1.33Reynolds number – predicts Laminar and Turbulent flow
- 1.34Solved problem-1
- 1.35Solved problem-2
- 1.36Solved problem-3
