Module I
Fatigue Properties
Introduction, Nature of fatigue failures, types of fatigue loading, Simple stress-fatigue properties- fixed amplitudes, Simple stress fatigue properties- varying amplitudes, Miner’s cumulative damage relation, Combined stress fatigue properties, Theories of failure for combined stresses, Influence of stress concentration on fatigue strength, Factors influencing fatigue strength, Types of fatigue test, Design for fatigue, Fracture, Basic modes of fracture. 10 hours
Module II
Creep Properties
Theories of strength and working stress. Temperature and creep stress strain properties, low-temperature properties, high-temperature properties, static creep properties, static short-time temperature properties, short-time impact temperature properties, fatigue temperature properties, repeated impact properties, and properties for temperature gradient stresses. 5 hours
Module III
Material Behaviour
Elastic, anelasticity and plasticity behavior of material, stages of creep, Mathematical modelling of creep behavior, Maxwell model, Voigt-Kelvin model, behavior of Creep-stress-time-temperature relations for simple tension, long-time creep-stress-time relations, log-log method, modified log-log method, creep-stress-time rupture relations, temperature and creep stress-strain properties for combined stresses. 6 hours
Module IV
Mechanics of Creep
Creep in tension, stress relaxation, creep in bending, creep deflection in bending, creep in torsion, creep buckling, members subjected to creep and combined stresses, thin-walled cylinder subjected to internal pressure and axial loading, thin-walled cylinder subjected to internal pressure and bending, thin-walled cylinder subjected to internal pressure and torsion. 6 hours
Module V
Thermal Stresses
Introduction, Thermoelastic stress-strain relations, Formulation and solution of two-dimensional thermoelastic problems, basic problems in thermos-elasticity, thermal stresses in uniform circular disks, solid and annular disks, combined thermal and rotational stresses, thermal stresses in cylindrical vessels, steady state heat flow, thermal stresses in pressurized vessels subjected to steady-state heat flow, initiation of ductile yield, thermal stresses in beams. 9 hours
Prerequisite(s): None

Design of mechanical elements using fatigue, creep and thermal stress analysis.

CO1: Knowledge will be gained on the subject matter.
CO2: Able to apply the theory to practical problems.
CO3: Knowledge will be enhanced to implement the concept for product development.
CO4: Able to develop a plan/programme for innovation.
CO5: Knowledge can be utilized to create a startup.

Gladius Lewis, Properties of Engineering Materials, Springer, 2025 , Ch.7,8,9

Rolf Sandström, Basic Modelling and Theory of Creep of metallic Materials, Springer 2024 , Ch. 2,3,4

Bruno A. Boley, Jerome H. Weiner, Theory of Thermal Stresses, Dover Publications, 2024 , Ch.1,2,3,5

Norman E. Dowling, Stephen L. Kampe, Milo V. Kral, Mechanical Behavior of Materials, Engineering Methods for Deformations, Fracture, and Fatigue, Pearson, 2020 , Ch.1,3,5