18AE54 Introduction To Composite Materials syllabus for AE

Introduction to Composite Materials Definition, classification of composite materials, classification of reinforcement - particulate, short fiber, whiskers, long fibers composites. matrix materials – metals, ceramics, polymers (including thermoplastics and thermosets), Carbon-Carbon Composites

Metal Matrix Composites: MMC with particulate and short fiber reinforcement, liquid and solid state processing of MMC – stir casting, squeeze casting. Properties of MMCs, Applications of Al, Mg, Ti based MMC

Processing of Polymer Matrix Composites: Thermoset Polymers, Hand layup Process, Vacuum Bagging Process, Post Curing Process, Filament winding, Pultrusion, Pulforming, Autoclave Process

Processing of Polymer Matrix Composites: Thermoplastic Polymers, Extrusion process, Injection Moulding Process, Thermo-forming process.

Post Processing of Composites – Adhesive bonding, drilling, cutting processes.

Micro-Mechanical Behavior of a Lamina Determination of elastic constants-Rule of mixtures, transformation of coordinates, micro-mechanics based analysis and experimental determination of material constants.

Macro-Mechanical Behavior of a Lamina: Global and local axis for angle lamina, determination of global and local stresses and moduli, for 2D-UD lamina with different fiber orientation and different fiber materials glass, carbon and aramid fiber reinforcement.

Failure Theory – Tsai-Hill, Tsai-Wu, Max Stress and Max Strain

Classical plate theory- Stress and strain variation in a laminate- Resultant forces and moments- A B & D matrices- Strength analysis of a laminate.

Inspection & Quality Control: Destructive & Non-Destructive Testing, Tensile, Compression, Flexural, Shear, Hardness; ultrasonic testing – A-B-C scan

Applications of Composites Materials Automobile, Aircrafts, missiles, Space hardware, Electrical and electronics, marine, recreational and Sports equipment, future potential of composites.

Course Outcomes:

At the end of the course the student will be able to:

1. CO1: Explain the advantages of using composite materials as an alternative to conventional materials for specific applications

2. CO2: Describe the advanced fabrication and processing for producing composite parts.

3. CO3: Evaluate the micro- and macro-mechanical behavior of composite laminates

Question paper pattern:

• The question paper will have ten full questions carrying equal marks.
• Each full question will be for 20 marks.
• There will be two full questions (with a maximum of four sub- questions) from each module.
• Each full question will have sub- question covering all the topics under a module.
• The students will have to answer five full questions, selecting one full question from each module.

Textbooks

1 Composite Materials- Science and Engineering K.K Chawla Springer Verlag II edition,1998

2 Mechanics of Composites Autar Kaw CRC Press II edition,2006

Reference Books

1 Composite Materials Handbook Mein Schwartz Department of Defense, USA 2002

2 Non-Destructive Testing of Composite Materials Ajay Kapadia TWI Publications 2006

3 Mechanics of Composite Materials R M Jones Taylor & Francis 2ndEdn,2015