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  • 5:26 AM, Sunday, 09 Aug 2020

Course Postgraduate
Semester Sem. II
Subject Code CHM623
Subject Title Composite Science and Technology


Introduction to Composite Materials, Classification, reinforcement; Polymer matrix composites, Thermoplastic and thermosetting resins, Common matrix reinforcement system; Concept of A stage, B stage and C stage resins; Particulate and fibre filled composites, Short fibre composites, Theories of stress transfer; Continuous fibre composites, Failure mechanism and strength, Halpin-Tsai equations, Prediction of Poisson’s ratio, Various failure modes; Specialty composites, Composites for satellites and advanced launch vehicles, Design considerations, PMC- for structural composites, Nanocomposites, Design and analysis of composite structures macro mechanics, Micro mechanics, Laminate analysis, FE model and analysis, Manufacturing techniques, Testing of composites, Raw material testing


Detailed version

Introduction to composite materials: Definition of composites, Classification of composites; General characteristics of reinforcement- classification, terminology used in fiber science, CMC, MMC and PMC.

Polymer matrix composites: Thermoplastic and thermosetting resins; Commonly used matrix reinforcement system;Fibre, Flake and particulate reinforced composites, Reinforcements used in PMC’s- glass, carbon, aramids, boron, Roving’s, yarns, fabrics, etc.; Thermoset matrices for aerospace components- polyesters, epoxies, phenolics, vinyl esters, cyanate esters, etc.; Thermoplastic matrices for advanced composites- PEEK, polysulfones, polyimides, etc. concept of A stage, B stage and C stage resins

Particulate and fiber filled composites: Applications, Function of matrix, Function of fibres, Polymer-fibre interface, Factors influencing the performance of composite, Coupling agents, Bonding agents, Short fibre composites, Theories of stress transfer, Analysis of short fibre composites, Critical fibre length, Rule of mixtures

Continuous fiber composites: Analysis of long fiber composites, Longitudinal behavior of unidirectional composites; Failure mechanism and strength, Factors influencing longitudinal and transverse strength and stiffness, Halpin-Tsai equations for transverse modulus, Prediction of Poisson’s ratio, Various failure modes

Specialty composites: Composites for satellites and advanced launch vehicles, Design considerations  PMC- for structural composites, Theory and application of ablatives.

Nanocomposites: Nano particle dispersion in polymer matrix, Polymer- nanoclay composites and polymer-carbon nanotubes composites

Design and analysis of composite structures: Macro mechanics of a lamina, Micro mechanics, Laminate analysis, FE model and analysis

Manufacturing techniques: Hand lay-up, Filament winding, Pultrusion, Resin transfer molding, Processing science of reactive polymer composites, Process steps for production, Selection of processing conditions toolings, Equipments, Carbon-carbon composites, Processing, Thermal and mechanical properties, Quality control

Testing of composites: Raw material testing, Property evaluation at laminate level, NDT techniques 

Text Books
  1. R.M. Jones, Mechanics of Composites, 2nd ed., Taylor & Francis, 1999.
  2. T. G. Gutowski, (Ed.) Advanced Composites Manufacturing, John Wiley & Sons, New York 1997. 
  3. P.M. Ajayan, L. Schadler, P.V. Braun Nano Composite Science and Technology, Wiley VCH, 2003. 
  4. E. Fitzer, L.M. Manocha, Carbon Reinforcement and Carbon/Carbon Composites, Springer-Verlag, Heidelberg, New York, 1998.
  5. K.K. Chawla, Ceramic Matrix Composites, Kluwer Academic Publishers, 2003.
  6. N. Chawla, K.K. Chawla, Metal Matrix Composites, Springer-Verlag, 2006.
  7. J.C. Seferis, L. Nicolais, (Eds.) The Role of the Polymeric Matrix in the Processing and Structural Properties of Composite Materials, Plenum Press, New York 1983.