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Course
Pro-forma
Bachelor of Engineering (Materials)
Code
KMEB3220
Title
Mechanical Behaviour and Failure of Materials
Pre-requisite
KMEB 2112 Solid Mechanics
Student Learning Time (SLT)
120 hours
Credit
3
Learning Outcomes
1.
Predict whether or not a component will experience yielding
using yielding criteria
2.
Assess whether or not a cracked component under loading
will experience fracture
3.
Estimate fatigue life of a component under cyclic loading
4.
Compute creep rupture lifetime of a component
Synopsis
Introduction to the mechanical behavior and failure of
engineering materials. Review of the concepts of stress and
strain. Perfect crystal strength, dislocation and plastic
deformation. Slip in single crystals. Schmids law. Resolved shear
stress. Failure criteria for yielding: Tresca and Von Mises.
Fracture of cracked members: fracture mechanism, fracture
testing, fracture toughness, brittle to ductile transition
temperature. Element of fracture mechanics: Griffith crack
theory, stress analysis of cracks, stress concentration factor,
stress intensity factor. Fatigue failure: fatigue mechanism, fatigue
testing, fatigue limit, fatigue strength. Fatigue failure: fatigue
crack propagation, fatigue life estimation. Time-dependent
behavior of materials: creep, relaxation, creep testing, relaxation
testing. Creep failure: mechanism of creep fracture, Larson-Miller
parameter, creep rupture lifetime. Engineering failure analysis.
Assessment
40 % Continuous Assessments
60 % Final Examination
References
1.
R. W. Hertzberg. Deformation and Fracture Mechanics of
Engineering Materials. John Wiley & Sons. 1995.
2.
N. E. Dowling. Mechanical Behavior of Materials: Engineering
Methods for Deformation, Fracture and Fatigue. Pearson
Prentice Hall. 2007.
3.
G.E. Dieter. Mechanical metallurgy. McGraw-Hill. 1988.
4.
M.A. Meyers and K.K. Chawla. Mechanical Behavior of
Materials. Cambridge University Press. 2009.
Soft Skills
•
Problem solving
•
Team work