MAGNETOSTRICTIVE PUMP

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MAGNETOSTRICTIVE PUMP

• ENME 444
• UMBC Department of Mechanical Engineering
• Faculty Sponsor Dr. Anjanappa
• Faculty Advisor Dr. Assakkaf
• Aaron Caprarola
• Charles Steinert
• Danny Bhatti
• Dave Ohler
• December 7, 2006

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ABSTRACT

• Design and development of a high speed and
  precision magnetostrictive fluid pump
• Design a pump operating at up to 10,000 Hz that
  functions using magnetostrictive properties of
  terfenol-d.
• Large volumes are enabled by the high frequency
  displacement
• Summarize accomplishments!!!!

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INTRODUCTION

• What is magnetostriction?
• Ferromagnetic materials displace in proportion to
  magnetic field
• Causes hum around electrical equipment
• Regular metals have a strain around 10-6
• High performance materials (like terfenol-d) have
  strain around 10-3
• We can use this displacement to pump fluid

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INTRODUCTION

• Boundaries
• Resolution of 10mL
• Operating temperatures 23-27C
• Max. dispensing speed 100mL/ms
• Frequencies up to 10KHz
• Supply fluid Gravity fed reservoir
• Dispensing volume 10mL 100mL

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PLANNING

• Tasks
• Market Research
• Design Magnetostrictive Pump
• Design Pumping Mechanism
• Design Control system
• Manufacturing Process/CAD Drawings

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PLANNING

• Gantt Chart/Schedule

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PLANNING

• Circuit Diagram/Critical Path

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PLANNING

• Deliverables
• Design
• Manufacturing Drawings
• References

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PLANNING

• Time Estimate
• A Constant as a function of company size
• PC Project Complexity
• D Project Difficulty
• J Level in Function Diagram
• F Number of functions at a given level

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PLANNING
Pump Liquid
Pump for a specific Amount of Time
Pump at a precise Flow rate

• Time Estimate of 105 hours
• Statistical Time Estimate of 108 hours

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DESIGN
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DESIGN
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DESIGN
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DESIGN
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DESIGN
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IMPACT STATEMENT

• Dispensing accurately metered quantities of fluid
  is critical for applications in the area of
  pharmaceutical, biotechnology and aerospace
  applications.
• Small quantities of fluid at high frequencies are
  most suitable for Bio MEMS devices.

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CONCLUSION
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REFERENCES

• Mcmasters, O.D.,Performance of Magnetostrictive
  TbxDz1-xFey (Terfenol-D) Transducer Elements
  Optimized to meet Device/Applications
  Requirements
• Wise, E.M.,Magnetostriction a new design tool.
  Product Engineering, p.162-166, 1957
• Chang,C.,Theory and Design of a Magnetostrictive
  Actuator, M.S. Thesis, Clemson University, 1971
• Goodfriend, M.J. and K.M. Shoop, Adaptive
  Characteristics of the Magnetostrictive Alloy,
  Terfenol-D for Active Vibration Control,J. of
  Intell. Mater. Syst. And Struct., Vol.3,
  p.245-255, April 1992
• Minivalve Cooperation, Yellow Springs, Ohio,
  www.minivalve.com.