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Composite Materials 1

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  1. Introduction

    The Course
  2. Meet the Instructor
  3. Teaser
  4. Composite Material
    Definition. Composite Reinforcement form and type of Matrix. Classification of Matrix
    1 Quiz
  5. Polymer Matrix Composite
    Advantages, disadvantages, and classification
  6. Thermoset Polymers
    Definition and classification of thermosets
    1 Quiz
  7. Molecular Configuration
    Molecular Configuration of Composite Materials
    1 Quiz
  8. Fillers or type of reinforcements
    Fillers or type of reinforcements
    1 Quiz
  9. Role of the Fiber and Matrix in a Composite Material
    Role of the Fiber and Matrix in a Composite Material
    1 Quiz
  10. Isotropic, Anisotropic and Orthotropic Materials
    Definition and comparison with other metal alloys
    1 Quiz
  11. Composite materials used in different industries
    Advantages, and in which industries can we apply them?
    1 Quiz
  12. Materials used in the Naval Industry
    Carbon Fiber, Kevlar (aramid), and Fibreglass
    1 Quiz
  13. Fiber Orientation in Fiber Reinforced Composites (type of fabrics)
    Unidirectional, Twill, Plain, Woven Roving, CSM (chopped fibers), Biaxial, and Multiaxial
    1 Quiz
  14. Resins
    Epoxy, Vynilester, and Polyester
    1 Quiz
  15. Material Selection
    Factors to be considered in the material selection
    1 Quiz
  16. Manufacturing Methods
    Manual (hand-layup) combined with vacuum bagging process
    1 Quiz
  17. Pre-preg Lamination
    1 Quiz
  18. RTM (Resin Transfer Molding)
    1 Quiz
  19. Infusion
    1 Quiz
  20. Autoclave Moulding, Filament Winding, and RIM (Reaction Injection Moulding)
    1 Quiz
  21. Spray-up, Compression Mould, and Pultrusion
    1 Quiz
  22. Factors to be considered in the Manufacturing Process Selection
    Surface finish, final mechanical properties, and level of production
    1 Quiz
  23. Factors to be considered in the Design Process
    Weight / Resin Ratio (different types of fibers and their fiber/resin ratio values), Fiber Orientation setting, and Young’s Modulus of Elasticity in composites
    1 Quiz
  24. Critical Variables during the process
    Characteristics, material control, and process control
    1 Quiz
  25. Polymer Molding and Curing Cycle
    Viscosity and Modulus Evolution during a Polymer Molding Cycle. Flow and Cure Cycle. Conversion vs. Temperature Phase Diagram for the Curing of Thermoset
    1 Quiz
  26. Temperature vs. time transformation diagram (TTT) & Stress vs. Strain Graph
    Glass transition temperature. Stress vs Strain graph explanation
    1 Quiz
  27. Solid Laminate
    Definition, characteristics, properties, benefits, and structure – main components
    1 Quiz
  28. Laminated Sandwich Panel
    Definition, characteristics, properties, benefits, structure – main components, and graphical structural comparison
    1 Quiz
  29. Combined Laminate or “Composite System Strength”
    Analysis, advantages and disadvantages of combined materials. Ultimate Strength vs Young’s Modulus depending on plies orientation
    1 Quiz
  30. Points of Failure in a Laminate Composite Material
    Classification of possible failures, composite inspection methods, and visual inspection defects
    1 Quiz
  31. Composite Material Data Sheets
    Guidance: real Interpretation and how to read it accurately
  32. Classical Laminated Plate Theory
    Definition and explanation
  33. In-plane Engineering Constants for the Laminates
    Nomenclature, and orientation of the laminate
    1 Quiz
  34. Symmetric and Nonsymmetric Laminates
    1 Quiz
  35. Introduction into the basic calculations for a Composite Laminated Plate
    Building the spreadsheet - Part 1
  36. Building the spreadsheet - Part 2
  37. Building the spreadsheet - Part 3
  38. Building the spreadsheet - Part 4
  39. Single Ply
  40. Multiple Plies
  41. Final Results Analysis
  42. Final Assignment
    Final Assignment
  43. Course Materials
    Introduction to the Course Materials
  44. Course Materials
  45. Recommended bibliography
  46. Course Survey
    Course evaluation survey
    1 Quiz
  47. Summary

Well, this course has come to an end.

I hope you have enjoyed it, as well as I did.

I have also enjoyed transferring as much as possible and, in the best way, all the knowledge my professional life has given to me.

I hope you have learned what you were looking for and that, from now on, you can apply this knowledge in creating new projects in composite materials.

To briefly review the main subjects seen during the course, we have started with the simplest, explaining the principles and definition of composite materials. Now we know it’s more than just a mix of products we can buy in a store. We understand that this chemical composition has a purpose, where a matrix contains a reinforcement, and together they create a composition with fabulous properties.

We learned the definition of polymer matrix composite and subdivisions such as thermosets and thermoplastics. We learned their chemical compositions and how they interconnect with each other.

We also learned about the different types of reinforcements that can be combined with the matrix and the roles each fulfills.

We explored other materials like alloys and compared their pros and cons against composites. We reviewed the industries in which the composite materials have the greatest influence, especially the naval industry. This also led us to know what isotropic and orthotropic materials mean.

Then we navigated through the most popular materials used in the naval industry: fiberglass, carbon fiber, and Kevlar. We learned more deeply what they are, their typical mechanical properties, their advantages and disadvantages, and their different structures.

We also ran through the type of matrices, or resins, mostly used in the naval industry. How they are composed, and what other materials need to be added to the mixture to obtain the desired results.

We learned how the resin reacts during the curing time or cycle and the different states it goes through. We dive into detail through many production processes, focused on the naval and other industries. We provided details and knowledge that are difficult to find in books and that only the experience will give us.

We learned fundamental definitions to understand the resistance level of these materials. We learned how to control and choose processes and materials, read the graphs properly, and understand what they tell us. We have learned a variety of types of laminates, nomenclatures and how to express or write them correctly.

The fundaments to recreate and understand how a system of loads and planes works in composite materials were presented, as well as the principles of failure criteria and how to detect these failures with different techniques. We learned the correct way of reading material data sheets and how different they are.

Getting closer to the end, we explained and reviewed formulas based on the laminate plate theory. This introduced us to creating our own composite ply calculator spreadsheet, a fully automated spreadsheet to calculate the point of failure in any laminate we want to create.

As I mentioned at the beginning of this video, I hope you enjoy the journey. And also hope that this does not end here and that there is more to come regarding learning composite materials.