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Sathyabama Institute of Science and Technology B.E. - Aeronautical Engineering SAEA3008 Mechanical Behavior of Aircraft Materials Syllabus

SATHYABAMA INSTITUTE OF SCIENCE AND TECHNOLOGY SCHOOL OF MECHANICAL ENGINEERING

SAEA3008
MECHANICAL BEHAVIOUR OF AIRCRAFT
MATERIALS
L T P Credits Total Marks
3 0 0 3 100

UNIT 1 MECHANICAL BEHAVIOUR OF ENGINEERING MATERIALS 9 Hrs.
Linear and Non-linear Elastic Properties – Mechanism of Elastic and Inelastic Action – Yielding, Strain Hardening, Fracture,
Elastic After Effect Bauchinger’s Effect, Testing and Flaw Detection of Material and Components by mechanical and NDT
checks.

UNIT 2 SELECTION OF MATERIALS FOR AIRCRAFT AND ROCKETS 9 Hrs.
Introduction – Physical Metallurgy – Wrought Aluminum Alloys – Cast Aluminum Alloy - Production of Semi Abrogated
Forms – Aerospace Application – Plastics and Rubber – Introduction to FRP, Glass and Carbon Composites – Fibers and
Resins – Characteristics and Application Classification of Aircraft Materials used for Aircraft Components Super Alloys,
Indigenes Alloys. Emerging Trends in Aerospace Materials.

UNIT 3 HEAT TREATMENT & CORROSION 9 Hrs.
Heat Treatment of Carbon Steel, Aluminum Alloy, Magnesium Alloy and Titanium Alloy used in Aircraft. Types of Corrosions
– Effect of Corrosion on Mechanical Properties – Protection against Corrosion – Corrosion Resistant Materials used in
Aircraft.

UNIT 4 FATIQUE OF MATERIALS 9 Hrs.
Physics of Fatigue Processes-Crack nucleation, Crack propagation in Metals, polymers, ceramics. Stress & Strain
Response of Metals- Monotonic tensile tests, Temperature and rate dependence, Cyclic response, Coffin-Manson Law ,
Cyclic property estimates, combined strain-life curve. Mean stress -Role of mean stresses on small crack nucleation/growth.

UNIT 5 FRACTURE MECHANICS 9 Hrs.
Fracture in ceramics, polymers, composites and metals, different types of fractures in metals and composites, fracture
mechanics - Linear fracture mechanics -KIC, elasto-plastic fracture mechanics - JIC, Measurement and ASTM standards,
Design based on fracture mechanics, effect of environment, effect of microstructure on KIC and JIC, application of fracture
mechanics in the design of metals, ceramics and polymers.
Max. 45 Hrs.

COURSE OUTCOMES
On completion of the course, student will be able to
CO1 - Recall history and evolution of aircraft materials.
CO2 - Compare the fracture and fatigue mechanics.
CO3 - Understand the selection of aircraft materials.
CO4 - Recognize the various functions of aircraft materials.
CO5 - Analyze and find suitable aircraft materials for application based.
CO6 - Distinguish the problems application based.

TEXT / REFERENCE BOOKS
1. Martin, J.W., “Engineering Materials, Their Properties, and Application”, Wykendhan Publication. (London) Ltd.,
2011.
2. Titterton, G., “ Aircraft Materials and Processes”, Vedition, Pitman Publication Co., 2010.
3. Krishnadas Nair, C.G., “ Hand book of Aircraft Materials”, Interline Publishing, 2011.
4. Balaram Gupta, “ Aerospace Materials”, Vol.I, II and III, Chand & Company Ltd., New Delhi 2012.
5. Metal R.L. Carlson and G. A. Kardomateas, An Introduction to Fatigue in Metals and Composites; First Edition,
Chapman and Hall, London, 1995.

END SEMESTER EXAMINATION QUESTION PAPER PATTERN
Max. Marks: 100 Exam Duration: 3 Hrs.
PART A: 10 Questions of 2 marks each – No Choice 20 Marks
PART B: 2 Questions from each unit of internal choice; each carrying 16 marks 80 Marks