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Manufacturing and testing properties of carbon fiber composite tubes using a winding machine

Braden Oh, Simon Kemp, Tigey Jewell-Alibhai, Andrew Mascillaro

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Objective

  • Successfully wind carbon fiber (CF)
    • Learn how to wind it
    • Design a gantry system to wind it
    • Learn how to epoxy it
  • Compare winding patterns
    • Wind the carbon fiber multiple ways
    • Design and run an experiment comparing these patterns
  • Hypothesis
    • Tubes wound at lower angles (tighter helices, more vertical) would withstand greater loads because the load is in-line with the filaments

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Winding Pattern Angles

Hoop

Helical

Polar

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Winding Pattern Angles

θ

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Mandrel

Mandrill

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Winding Machine

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Design

NEMA-17 Steppers

Cart + Tensioner

Belt Tensioner

Mandrel

Clamps

Belt Drive

Rod Pivot

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System Diagram

Arduino

Belt Stepper Motor

Tube Dimensions and Winding Specs

Mandrel Stepper Motor

LCD Status Monitor

Start and Pause Button

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Experimental Design

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Factors to Test

Constants

  • Yield stress
  • Modulus of compression
  • Ultimate compressive strength
  • Amount of CF
  • Curing process
  • Tube length
  • Epoxying process*
  • Mass*

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*some unavoidable variation in the manufacturing process

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Results

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All Stress Strain Curves

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Design Expert Comparison Charts

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New Hypothesis

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Thanks Matt for a great semester of MattSci!

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Questions?

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