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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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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 -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
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
Manufacturing 1. Construct a mold
Manufacturing 2. Laid 9 layers of fiberglass onto mold 3. Laid 1 layer of carbon fiber onto fiberglass
Manufacturing 4. Apply epoxy to outside
Manufacturing 5. Lay out to cure
Testing • Test for bending stiffness and vibration • Test for maximum bending moment (failure)
Future Considerations • Find a better way to lay the fibers around the mold • Use pre-preg and a larger autoclave to cure