
Strength of
Materials
Subject Code: 
EME1066 
Aim of Subject: 
To introduce to the students the strength and basic characteristics
of materials for proper applications in the industry. 
Learning Outcome of Subject: 
At the completion of the subject, students should be able to :
 Analyze two dimensional basic stress, strain, and axial loading problems.
 Solve torsion problems of circular shafts as solid or hollow bars.
 Analyze beam of different cross sections to meet design requirements.
 Develop or analyze a basic design or mechanical part under combined loading
by computing principal stresses and/or applying failure theories.

Programme Outcomes: 
 Ability to acquire and apply fundamental principles of science and engineering(60%)
 Capability to communicate effectively(10%)
 Acquisition of technical competence in specialised areas of engineering discipline(10%)
 Ability to identify, formulate and model problems and find engineering solutions based on a systems approach(10%)
 Ability to work effectively as an individual, and as a member/leader in a team(10%)

Assessment Scheme: 
 Lab Experiments  work in group, lab report writing, oral assessment at the end of lab (10%)
 Tutorial / Assignment  group/ individual assignment,focus group discussion at tutorial,to enhance understanding of basic concepts in lecture(15%)
 Test Quiz  written exam (15%)
 Final Exam  written exam (60%)

Teaching and
Learning Activities: 
54 hours (lectures,tutorials and laboratory experiment) 
Credit Hours: 
3 
PreRequisite: 
EME1016 Applied Statics 
References: 

Ferdinand P. Beer, E. Russell Johnston, Jr. & John T. DeWolf, "Mechanics of materials" 3rd edition, McGrawHill, 2005. (Textbook)

R.S Khurmi, "Strength of materials", S. Chand & company LTD. 2001

Subject Contents

Concept of Stress, Strain and Axial Loading
Tensile, compressive, shear and bearing stresses. Concept of strain. Design Consideration.Generalized Hooke’s law.
Lateral strain and Poisson’s ratio. Axial Loading. Application
to statistically determinate and indeterminate problems.Saint Venant’s Principle.

Torsion
Torsion of circular shafts, solid and hollow. Maximum shear stress
of shaft under torsion. Determinate and indeterminate problems.

Pure Bending and Transverse Loading
Bending moments and shear force. Singularity functions. Flexural formula. Economic sections. Shear flow, and shear stress in beam.

Deflection of Beams
Deformation of beam under Transverse Loading. Slope and deflection by direct
integration method, energy methods and Castigliano's theorem.

Stress Transformation and Combined Loading
Biaxial stresses and corresponding strains. Mohr’s circle for plane stress.Principal Stresses.
Tresca and Von Mises Criteria for Ductile Material under plane stress and Maximum Normal Stress Criterion for
Brittle Material

Yield Criteria
Maximum normal stress, maximum shear stress and distortion energy.
Von Mises criteria.
Laboratory
1. Young's Modulus
2. Torsion of round bars
