Course11210617736 lectures
Explosions and Safety
Prof. K. Ramamurthi and Prof. Prasad Patnaik BSV · IIT Madras
About
The physical principles governing the various kinds of explosions are dealt with. Starting with simple modeling of blast waves derived from energy release in explosions, predictions for the damage caused by explosions and methods of ensuring safety are considered. The mechanisms of energy release in gaseous, liquid, dust and solid explosives are examined. Physical explosions and explosions of pressure vessels are also considered. The interaction of blast waves from explosions with objects is dealt with and the damages that occur are quantified.
INTENDED AUDIENCE : Engineering students and practicing engineers PREREQUISITES : Basic Mechanics and Thermodynamics
Lectures
Week 1
- Loud Bang and Disruption
- Blast Wave in an Explosion; Prediction from Dimensional Considerations
- Typical Examples of Explosions and Classification
Week 2
- Shock Hugoniot and Rayleigh Line
- Properties behind Constant Velocity Shock
- Blast waves; Concentration of Mass at Front, Snow Plow Approximation
Week 3
- Decay of a Blast Wave, Sach’s Scaling
- Overpressure and Impulse in the near and Far Field
- Missiles, Fragments and Shrapnel, Craters
Week 4
- Reflection and Transmission of Blast Waves, Impedance
- Amplification of Reflected Blast waves, Spall, Damage to Organs, Mushroom Cloud
- Damage from Blast waves, Iso-damage Curve
Week 5
- Energy Release in a Chemical Reaction, Standard Heats of Formation
- Stoichiometry, Equivalence Ratio and Heat Release in Fuel-rich and Oxidizer-rich Compounds
- Energy release calculations, Higher and Lower Calorific Values, Internal Energy of Formation
Week 6
- Concentration, Activation Energy, Energy Release Profile
- Thermal Theory of Explosions
- Application of Thermal Theory and Inferences
Week 7
Week 8
- Case Histories of explosions involving Volatile Liquids
- Introduction to Detonations
- Structure of Detonation
Week 9
- Realizable States in a Detonation
- One Dimensional Model of a Detonation
- Case Histories of explosions Involving Detonation or Quasi-Detonation
Week 10
Week 11
- Physical Explosions
- Rupture of Cryogenic Storage Vessels and Pressure Vessels
- Condensed Phase Explosives based on Hydrocarbons
Week 12
Syllabus and materials
At NPTEL, as the course publishes them.
Credits and licence
- Institution
- IIT Madras
- Department
- Mechanical Engineering
- Taught by
- Prof. K. Ramamurthi, Prof. Prasad Patnaik BSV
- Level
- Undergraduate
- Language
- English
- Subjects
- Engineering
- Source
- NPTEL
- Licence
- CC BY-NC-SA, as NPTEL states it. Non-commercial use only. NPTEL's terms
- Attribution
- NPTEL states: "Distributed under Creative Commons Attribution-ShareAlike / CC BY - NC - SA", beside a BY-NC-SA badge.
- Who can watch
- NPTEL gives no rating. Invisible Network shows it to Tweens profiles and older, judged from what the source says about it. How courses are placed