National Institute of Technology Rourkela

राष्ट्रीय प्रौद्योगिकी संस्थान, राउरकेला

ଜାତୀୟ ପ୍ରଯୁକ୍ତି ପ୍ରତିଷ୍ଠାନ ରାଉରକେଲା

An Institute of National Importance

Course Details

Subject {L-T-P / C} : MM3202 : Mechanical Properties of Materials { 3-0-0 / 3}

Subject Nature : Theory

Coordinator : Krishna Dutta

Syllabus

Module 1 :

Module 1: 5 hours
Hardness: Definition, Different types of hardness tests.

Module 2 :

Module 2: 8 hours
Tensile Behaviour: Engineering and true stress-true strain curve, Strain hardening exponent and strain hardening coefficient, Instability in tension, Effect of strain rate and temperature on flow properties, Strain rate sensitivity.
Compression Behaviour: Standard compression test method , precautions.

Module 3 :

Module 3: 8 hours
Fracture: Theoretical cohesive strength of metals, Griffith’s theory of brittle fracture, Metallographic aspects of fracture, Mechanism of brittle and ductile fracture, Fractographic aspects of fracture, Notch effects.
Fracture Mechanics: Strain energy release rate, Stress intensity factor, Plane strain fracture toughness, Plastic zone, Specimen design

Module 4 :

Module 4: 5 hours
Fatigue: High cycle and low cycle fatigue, Micro-mechanisms of crack initiation and growth, Stress and strain approaches of fatigue, Fracture mechanics approach, Fatigue crack growth, Paris law
Environmental Assisted Cracking: Stress corrosion cracking, Hydrogen embrittlement, Corrosion fatigue.

Module 5 :

Module 5: 5 hours
Impact Behaviour: Notched bar impact test, Charpy and Izod specimens, Transition temperature phenomenon, Factors affecting transition temperature, Instrumented Charpy test

Module 6 :

Module 6: 4 hours
Creep: Creep curves, Mechanisms of creep, Stress rupture test, Life prediction, High temperature alloys.

Course Objective

1 .

To apply knowledge of material properties in real-world engineering design problems.

2 .

To understand the relationship between the microstructure of materials and their mechanical properties.

3 .

To evaluate the failure mechanisms of materials under different loading conditions.

Course Outcome

1 .

Understanding different hardness testing methods to evaluate the small-scale mechanical properties of different materials.

2 .

Analyzing stress-strain behavior in tensile and compression testing to evaluate the strength and deformability of various material systems.

3 .

Applying the fundamental concepts of fracture and principles of fracture mechanics to evaluate material performance and design components for improved failure resistance.

4 .

Evaluating the role of repeated loading cycles on the micro-mechanisms of fatigue failure.

5 .

Exploring the role of sudden dynamic loading as well as the impact of environmental factors on material degradation and failure.

6 .

Understanding the principles of creep and its effect on the long-term performance of materials, including high-temperature alloys.

Essential Reading

1 .

G. E. Dieter, Mechanical Metallurgy, McGraw - Hill Publication

2 .

R. W. Hertzberg, Deformation and Fracture Mechanics of Engineering Materials, John Wiley & Sons Publication

Supplementary Reading

1 .

W. F Hosford, Mechanical Behavior of Materials, Cambridge University Press

2 .

T. H. Courtney, Mechanical Behavior of Materials, Overseas Press

Journal and Conferences

1 .

Most of the Journal articles of Materials Science and Engineering A

2 .

Some of the Journal articles of Acta Materillia