1. 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

2. 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!!!!

3. 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

4. INTRODUCTION Boundaries:  Resolution of 10  L  Operating temperatures: 23-27°C  Max. dispensing speed: 100  L/ms  Frequencies up to 10KHz  Supply fluid: Gravity fed reservoir  Dispensing volume: 10  L – 100mL

5. PLANNING Tasks:  Market Research  Design Magnetostrictive Pump  Design Pumping Mechanism  Design Control system  Manufacturing Process/CAD Drawings

6. PLANNING Gantt Chart/Schedule:

7. PLANNING Circuit Diagram/Critical Path:

8. PLANNING Deliverables:  Design  Manufacturing Drawings  References

9. 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

10. PLANNING Time Estimate of 105 hours Statistical Time Estimate of 108 hours Pump Liquid Pump for a specific Amount of Time Pump at a precise Flow rate

11. DESIGN

12. DESIGN

13. DESIGN

14. DESIGN

15. DESIGN

16. 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.

17. CONCLUSION

18. REFERENCES Mcmasters, O.D.,” 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. www.minivalve.com