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# Composite Golf Shaft - PowerPoint PPT Presentation

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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### Composite Golf Shaft

AerE 423

Ehrich Rodgers and Nick Williams

-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

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

• 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

1. Construct a mold

2. Laid 9 layers of fiberglass onto mold

3. Laid 1 layer of carbon fiber onto fiberglass

4. Apply epoxy to outside

5. Lay out to cure

• Test for bending stiffness and vibration

• Test for maximum bending moment (failure)

• Find a better way to lay the fibers around the mold

• Use pre-preg and a larger autoclave to cure