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Course11210422972 lectures

Introduction to Composites

Prof. Nachiketa Tiwari · IIT Kanpur

Start with lecture 1 At NPTEL

About

This course is intended for all those who want to conduct experiments in area of NVH. Thus, the course is open to students of engineering and science, and also to all those who from the industry and research organizations – who are working in area of sound, NVH and acoustics. Each lecture will be followed by a quiz, which will help student the concepts better, and gain deeper insights to measurement process. The course is fairly generic so that there is no need for a particular background. Rather, what is needed is openness, and ability to learn and check out new ideas with comfort.

Intended audience: UGs, PGs, professionals in industry who want to learn about basics of sound and acoustics

Prerequisites: Must be enrolled into a B. Tech. program or equivalent and should have completed at least second year of his 4-year program.

Lectures

Week 01

  1. Lecture 01: Definition of the composite materials YouTube
  2. Lecture 02: Composite materials and its applications. YouTube
  3. Lecture 03: Classification of the composite materials. YouTube
  4. Lecture 04: Fibers Strength YouTube
  5. Lecture 05: Advantages and limitations of composite materials. YouTube
  6. Lecture 06: Advantages and limitations of composite materials. YouTube

Week 02

  1. Lecture 07: Different Types of Fiber YouTube
  2. Lecture 08: Glass Fibers YouTube
  3. Lecture 09: Graphite Fibers YouTube
  4. Lecture10: Aramid and Boron Fibers YouTube
  5. Lecture11: Ceramic Fibers YouTube
  6. Lecture12: Matrix – Properties and classifications. YouTube

Week 03

  1. Lecture 13: Polymers as matrix material and their classification YouTube
  2. Lecture 14: Thermoset and thermoplastic matrix materials YouTube
  3. Lecture 15: Properties of thermoset and thermoplastic materials YouTube
  4. Lecture 16: Production methods YouTube
  5. Lecture 17: Thermoplastics and metals as matrix materials YouTube
  6. Lecture 18: Ceramic, and carbon matrix materials,and filler materials. YouTube

Week 04

  1. Lecture19: What is an appropriate fabrication process of a composite? YouTube
  2. Lecture20: Fabrication of Thermoset Composites YouTube
  3. Lecture21: Hand Lay-Up Process YouTube
  4. Lecture22: Bag Molding Process YouTube
  5. Lecture23: Resin Transfer Molding Process YouTube
  6. Lecture24: Fabrication of Thermoplastic, Metal and Ceramic Matrix based Composites YouTube

Week 05

  1. Lecture 25: Terminologies and basic concepts YouTube
  2. Lecture26: Orthotropic material YouTube
  3. Lecture 27: Modeling of unidirectional composites YouTube
  4. Lecture 28: Composite density as a function of mass fraction and volume fraction YouTube
  5. Lecture 29: Calculation of longitudinal modulus for unidirectional composites YouTube
  6. Lecture30: Failure modes of unidirectional composite YouTube

Week 06

  1. Lecture 31: Failure of Unidirectional Lamina YouTube
  2. Lecture 32: Minimum Volume Fraction and Critical Volume Fraction YouTube
  3. Lecture 33: Example based on Failure of Composite Material YouTube
  4. Lecture 34: Example based on Minimum and Critical Volume Fraction YouTube
  5. Lecture 35: Transverse Modulus of Unidirectional Composite YouTube
  6. Lecture 36: Halpin-Tsai Relation for Transverse Modulus YouTube

Week 07

  1. Lecture 37: Transverse modulus of unidirectional composites YouTube
  2. Lecture 38: Transverse strength of unidirectional composites YouTube
  3. Lecture 39: Poisson’s ratio of unidirectional composites YouTube
  4. Lecture 40: Failure modes of composite materials YouTube
  5. Lecture 41: - Failure modes of composite materials YouTube
  6. Lecture 42: Other properties YouTube

Week 08

  1. Lecture 43: Concept of Tensor YouTube
  2. Lecture 44: Stress Transformation (Two Dimensional) YouTube
  3. Lecture 45: Analysis of Specially Orthotropic Lamina YouTube
  4. Lecture 46: Analysis of Generally Orthotropic Lamina YouTube
  5. Lecture 47: Transformation of Engineering Constants-Part I YouTube
  6. Lecture 48: Transformation of Engineering Constants-Part II YouTube

Week 09

  1. Lecture 49: Variation of elastic constants with respect to fiber orientation for generally orthotropic lamina YouTube
  2. Lecture 50 : Generally orthotropic lamina YouTube
  3. Lecture 51: Generalized Hooke’s law for anisotropic materials YouTube
  4. Lecture 52: Generalized Hooke’s law for anisotropic materials YouTube
  5. Lecture 53: Elastic constants for Specially orthotropic materials YouTube
  6. Lecture 54 Elastic constants for Specially orthotropic materials in plane stress YouTube

Week 10

  1. Lecture 55: Relation Betweeen Engineering Constants and Elements of Stiffness and Compliance Matrices- Part I YouTube
  2. Lecture 56: Relation Betweeen Engineering Constants and Elements of Stiffness and Compliance Matrices- Part II YouTube
  3. Lecture 57: Stress Strain Relations for A Lamina With Arbitrary Orientation- Part I YouTube
  4. Lecture 58: Stress- Strain Relation for A Lamina With Arbitrary Orientation- Part II YouTube
  5. Lecture 59: Strength of An Orthotropic Lamina YouTube
  6. Lecture 60: Importance of Sign of Shear Stress in context of Strength of A Unidirectional Lamina YouTube

Week 11

  1. Lecture 61: Strain displacement relations for a laminate YouTube
  2. Lecture 62: Stress-strain relations for individual layers of a laminate YouTube
  3. Lecture 63: Resultant forces and moments YouTube
  4. Lecture 64: Relations between force and moment resultants and mid-plane strains and curvatures YouTube
  5. Lecture 65: Physical significance of extensional stiffness matrix [A], coupling matrix [B] and bending stiffness matrix [D] matrices YouTube
  6. Lecture 66: Lamination sequence (standard laminate code) YouTube

Week 12

  1. Lecture 67: Calculation of A, B and D Matrices. YouTube
  2. Lecture 68: Simplification of Stiffness Matrices: Part- I. YouTube
  3. Lecture 69: Simplification of Stiffness Matrices: Part- II. YouTube
  4. Lecture 70: Quasi-Isotropic Laminates: Part-I. YouTube
  5. Lecture 71: Quasi-Isotropic Laminate. Part-II. YouTube
  6. Lecture 72: Failure of Composite Laminates. YouTube

Syllabus and materials

At NPTEL, as the course publishes them.

Credits and licence

Institution
IIT Kanpur
Department
Mechanical Engineering
Teacher
Prof. Nachiketa Tiwari
Level
Undergraduate
Language
English
Subjects
Engineering
Source
NPTEL
Licence
CC BY-NC-SA, as NPTEL states it. Non-commercial use only. NPTEL's terms
Attribution
NPTEL states: "Distributed under Creative Commons Attribution-ShareAlike / CC BY - NC - SA", beside a BY-NC-SA badge.
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