Mechanical Behavior of Materials

By Prof. Sankaran.S   |   IIT Madras
Learners enrolled: 685
This course deals with fundamentals of mechanical behavior of broad class of materials. The primary focus is on the load bearing ability, types of loading and respective failure modes. The course also addresses mechanical properties sensitive as well as insensitive to the microstructure of the materials. The course attempts to capture the microstructure mechanical behavior correlations in materials.

INTENDED AUDIENCE :  Students undergoing any degree course in the branches of Metallurgical/Materials/Mechanical/Materials Science or its allied discipline

INDUSTRY SUPPORT :  Automotive and metal forming industries
Course Status : Completed
Course Type : Core
Duration : 12 weeks
Category :
  • Metallurgy and Material science & Mining Engineering
  • Minor in Metallurgy
Credit Points : 3
Level : Undergraduate/Postgraduate
Start Date : 25 Jul 2022
End Date : 14 Oct 2022
Enrollment Ends : 08 Aug 2022
Exam Date : 30 Oct 2022 IST

Note: This exam date is subjected to change based on seat availability. You can check final exam date on your hall ticket.

Page Visits

Course layout

Week 1: Introduction, overview of the subject and fundamentals of the atomic structure and types of bonding in different classes of materials and its relation to the physical and mechanical properties

Week 2: Elasticity - Analysis of stress, State of stress at a point, Normal and shear stress components, Stress components on an arbitrary plane, Principal stresses, Plane stress & amp; Plane strain,

Week 3: Generalized Hooke’s law, Atomic equivalent of Hooke’s law, Elastic behavior of anisotropic and isotropic materials.

Week 4: Plastic deformation in single & amp; polycrystalline, semi crystalline materials, strengthening mechanisms in solids, Work hardening

Week 5: Solid solution strengthening, Grain boundary strengthening, Particle hardening, High temperature deformation of amorphous; crystalline materials

Week 6: Mechanical testing- A review, Common states of stress in real life, Tension, Indentation, Compression, Torsion, Bending.

Week 7: Fracture of solids/Fracture mechanics - Linear elastic stress field in cracked bodies – Crack deformation modes, - Singular stress field and displacement fields

Week 8: Stress intensity factor solutions - Crack growth based on energy balance - Griffith’s criterion for brittle fracture - Strain energy release rate, Stress intensity factor equivalence - Crack stability, R curves & amp;

Week 9: J integral concepts – Critical stress intensity factor fracture criterion -Fracture criterion - Experimental determination of fracture toughness (K IC )- Non-linear fracture - Toughening mechanisms (in ceramics).

Week 10: Creep, mechanisms of creep, Creep of pure metals, solid solutions, MMCs, Creep of ceramics and polymers, creep asymmetry. Superplasticity in materials

Week 11: Fatigue of engineering materials - Characteristics of fatigue fracture -Fatigue crack propagations laws , Strain controlled fatigue

Week 12: Fatigue failure models - Fatigue life calculations, High cycle fatigue design- Surface fatigue failure models- dynamic contact

Books and references

  1. Mechanical Behavior of Materials, Engineering methods for Deformation, Fracture and Fatigue, 4th Edition. Norman E. Dowling 
  2. Mechanical Behavior of Materials, 2nd Edition. Marc Meyers and Krishan Chawla 
  3. Mechanical Behavior of Materials, 2nd Edition, Thomas H. Courtney

Instructor bio

Prof. Sankaran.S

IIT Madras
Dr. S. Sankaran is presently Professor in the department of Metallurgical and Materials Engineering, IIT Madras. His research interests are deformation processing of materials, mechanical behavior of materials and electron microscopy. He is also presently the faculty in-charge of central electron microscopy of IIT Madras.

Course certificate

The course is free to enroll and learn from. But if you want a certificate, you have to register and write the proctored exam conducted by us in person at any of the designated exam centres.
The exam is optional for a fee of Rs 1000/- (Rupees one thousand only).
Date and Time of Exams: 30 October 2022 Morning session 9am to 12 noon; Afternoon Session 2pm to 5pm.
Registration url: Announcements will be made when the registration form is open for registrations.
The online registration form has to be filled and the certification exam fee needs to be paid. More details will be made available when the exam registration form is published. If there are any changes, it will be mentioned then.
Please check the form for more details on the cities where the exams will be held, the conditions you agree to when you fill the form etc.


Average assignment score = 25% of average of best 8 assignments out of the total 12 assignments given in the course.
Exam score = 75% of the proctored certification exam score out of 100

Final score = Average assignment score + Exam score

YOU WILL BE ELIGIBLE FOR A CERTIFICATE ONLY IF AVERAGE ASSIGNMENT SCORE >=10/25 AND EXAM SCORE >= 30/75. If one of the 2 criteria is not met, you will not get the certificate even if the Final score >= 40/100.

Certificate will have your name, photograph and the score in the final exam with the breakup.It will have the logos of NPTEL and IIT Madras. It will be e-verifiable at nptel.ac.in/noc.

Only the e-certificate will be made available. Hard copies will not be dispatched.

Once again, thanks for your interest in our online courses and certification. Happy learning.

- NPTEL team

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