NPTEL : NOC:Introduction to Composites (Mechanical Engineering)

Co-ordinators : Prof. Nachiketa Tiwari


Lecture 1 - Definition of the composite materials

Lecture 2 - Composite materials and its applications

Lecture 3 - Classification of the composite materials

Lecture 4 - What Makes fiber so strong?

Lecture 5 - Advantages and limitations of composite materials

Lecture 6 - Properties of the composite materials.

Lecture 7 - Different Types of Fiber

Lecture 8 - Production process and different types of Glass Fiber

Lecture 9 - Graphite Fibers

Lecture 10 - Aramid and Boron Fibers

Lecture 11 - Ceramic Fibers

Lecture 12 - Matrix - Properties and classifications

Lecture 13 - Polymers as matrix material and its classification

Lecture 14 - Thermosets and thermoplastics

Lecture 15 - Properties of thermosets and thermoplastics

Lecture 16 - Thermoset materials and its production methods

Lecture 17 - Thermoplastics and metals as matrix materials

Lecture 18 - Ceramic and carbon matrices

Lecture 19 - What is a good fabrication process of a composite?

Lecture 20 - Fabrication of Thermoset Composites

Lecture 21 - Hand Lay-Up Process

Lecture 22 - Bag Molding Process

Lecture 23 - Resin Transfer Molding Process

Lecture 24 - Fabrication of Thermoplastic, Metal and Ceramic Matrix based Composites

Lecture 25 - Terminologies and basic concepts

Lecture 26 - Orthotropic material

Lecture 27 - Modeling of unidirectional composites

Lecture 28 - Composite density as a function of mass fraction and volume fraction

Lecture 29 - Calculation of longitudinal modulus for unidirectional composites

Lecture 30 - Failure modes of unidirectional composite

Lecture 31 - Failure of Unidirectional Lamina

Lecture 32 - Minimum Volume Fraction and Critical Volume Fraction

Lecture 33 - Example based on Failure of Composite Material

Lecture 34 - Example based on Minimum and Critical Volume Fraction

Lecture 35 - Transverse Modulus of Unidirectional Composite

Lecture 36 - Halpin-Tsai Relation for Transverse Modulus

Lecture 37 - Transverse modulus of unidirectional composites

Lecture 38 - Transverse strength of unidirectional composites

Lecture 39 - Poisson’s ratio of unidirectional composites

Lecture 40 - Failure modes of composite materials

Lecture 41 - Failure modes of composite materials

Lecture 42 - Other properties

Lecture 43 - Concept of Tensor

Lecture 44 - Stress Transformation (Two Dimensional)

Lecture 45 - Analysis of Specially Orthotropic Lamina

Lecture 46 - Analysis of Generally Orthotropic Lamina

Lecture 47 - Transformation of Engineering Constants - Part I

Lecture 48 - Transformation of Engineering Constants - Part II

Lecture 49 - Variation of elastic constants with respect to fiber orientation for generally orthotropic lamina

Lecture 50 - Generally orthotropic lamina

Lecture 51 - Generalized Hooke’s law for anisotropic materials

Lecture 52 - Generalized Hooke’s law for anisotropic materials

Lecture 53 - Elastic constants for Specially orthotropic materials

Lecture 54 - Elastic constants for Specially orthotropic materials in plane stress

Lecture 55 - Relation Betweeen Engineering Constants and Elements of Stiffness and Compliance Matrices - Part I

Lecture 56 - Relation Betweeen Engineering Constants and Elements of Stiffness and Compliance Matrices - Part II

Lecture 57 - Stress Strain Relations for A Lamina With Arbitrary Orientation - Part I

Lecture 58 - Stress- Strain Relation for A Lamina With Arbitrary Orientation - Part II

Lecture 59 - Strength of An Orthotropic Lamina

Lecture 60 - Importance of Sign of Shear Stress in context of Strength of A Unidirectional Lamina

Lecture 61 - Strain displacement relations for a laminate

Lecture 62 - Stress-strain relations for individual layers of a laminate

Lecture 63 - Resultant forces and moments

Lecture 64 - Relations between force and moment resultants and mid-plane strains and curvatures

Lecture 65 - Physical significance of extensional stiffness matrix [A], coupling matrix [B] and bending stiffness matrix [D] matrices

Lecture 66 - Lamination sequence (standard laminate code)

Lecture 67 - Calculation of A, B and D Matrices.

Lecture 68 - Simplification of Stiffness Matrices - Part I

Lecture 69 - Simplification of Stiffness Matrices - Part II

Lecture 70 - Quasi-Isotropic Laminates - Part I

Lecture 71 - Quasi-Isotropic Laminates - Part II

Lecture 72 - Failure of Composite Laminates