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Composite Golf Shaft. AerE 423 Ehrich Rodgers and Nick Williams. Background. -Golf shafts provide a way for the golfer to generate force on the golf ball -To do this the golfer’s hands provide a force on one end while the golf ball provides a force on the other end

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Presentation Transcript
composite golf shaft

Composite Golf Shaft

AerE 423

Ehrich Rodgers and Nick Williams

background
Background

-Golf shafts provide a way for the golfer to generate force on the golf ball

-To do this the golfer’s hands provide a force on one end while the golf ball provides a force on the other end

-The dimensions below are common among clubs that conform with USGA rules, specifically a driver

preliminary analysis

FMAX

L = 35 in

Preliminary Analysis

-The composite golf shaft is modeled as a cantilever beam with a circular cross-section

-The model uses a conservative cross-sectional radius that is equal to the average of the butt radius and tip radius.

-Design criteria for FMAX = 4000 lbs

manufacturing
Manufacturing
  • Construct a mold
  • Laid 9 layers fiberglass onto mold
  • Laid 1 layer a carbon fiber on top of fiberglass
  • Apply epoxy to outside
  • Lay out to cure
manufacturing1
Manufacturing

1. Construct a mold

manufacturing2
Manufacturing

2. Laid 9 layers of fiberglass onto mold

3. Laid 1 layer of carbon fiber onto fiberglass

manufacturing5
Manufacturing

4. Apply epoxy to outside

manufacturing6
Manufacturing

5. Lay out to cure

testing
Testing
  • Test for bending stiffness and vibration
  • Test for maximum bending moment (failure)
future considerations
Future Considerations
  • Find a better way to lay the fibers around the mold
  • Use pre-preg and a larger autoclave to cure
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