ME4671 CAPSTONE DESIGN PROJECT

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ME4671 CAPSTONE DESIGN PROJECT

• MAGNETO-RHEOLOGICAL BRAKING SYSTEM

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KEY POINTS

• INTRODUCTION TO MR NANOPARTICLES
• THEORETICAL BACKGROUND
• DESIGN COMPONENTS
• FINAL ANALYSIS

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INTRODUCTION TO MR NANOPARTICLES

• PURPOSE OF USING NANOTECHNOLOGY IN A BRAKING
  SYSTEM
• Magneto-Rheological MR fluid is a mixture of
  magnetizable materials, such as iron nanospheres,
  in synthetic silicone base fluid
• MR braking devices exists however none has ever
  been tested with new experimental Nanoparticles

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INTRODUCTION TO MR NANOPARTICLES
Once the MR fluid is magnetized the metal
particles will be aligned into fibrous structure
When the MR fluid between two surfaces moving in
opposite directions is magnetized it will create
a variable viscous friction force
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INTRODUCTION TO MR NANOPARTICLES

• Why Nanoparticles ?
• High saturation magnetization
• High relative permeabilities
• Low coercivities
• High resistivities
• Low hysteresis loss

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INTRODUCTION TO MR NANOPARTICLES
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KEY POINTS

• INTRODUCTION TO MR NANOPARTICLES
• THEORETICAL BACKGROUND
• DESIGN COMPONENTS
• FINAL ANALYSIS

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THEORETICAL BACKGROUND

• Problem Analysis
• Kinematics of Bicycle System

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THEORETICAL BACKGROUND

• Problem Analysis
• Front Wheel Analysis

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THEORETICAL BACKGROUND

• Problem Analysis
• Bingham Equation

F
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THEORETICAL BACKGROUND

• Flux Path when B ? 0

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KEY POINTS

• INTRODUCTION TO MR NANOPARTICLES
• THEORETICAL BACKGROUND
• DESIGN COMPONENTS
• FINAL ANALYSIS

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DESIGN COMPONENTS

• Rotor

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DESIGN COMPONENTS

• Coil Housing

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DESIGN COMPONENTS

• Plates Seals

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DESIGN COMPONENTS

• Fully Operational Braking System

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KEY POINTS

• INTRODUCTION TO MR NANOPARTICLES
• THEORETICAL BACKGROUND
• DESIGN COMPONENTS
• FINAL ANALYSIS

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FINAL ANALYSIS

• THOUGHTS CHALLENGES
• COST
• CONCLUSION

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FINAL ANALYSIS
THOUGHTS CHALLENGES
Axle Brake

• The fluid would be in direct contact with the
  copper coils
• Assembly issues

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FINAL ANALYSIS
THOUGHTS CHALLENGES

• Diminished Flux Intensity. Flux Path too long
• Weight due to assembling more parts
• Higher Leaking Potential

Cup Brake
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FINAL ANALYSIS
Cost
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FINAL ANALYSIS
Conclusion

• Product Review
• Applications
• Safety
• Future Improvements

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MAGNETO-RHEOLOGICAL BRAKING SYSTEM
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Innovation

• STARTS WITH US !

Questions ?