1. Introduction to Mechanical Engineering GK12 Student: Kyle Barr Professor Frank Fisher Department of Mechanical Engineering Stevens Institute of Technology Web: http:://www.stevens.edu/nanolab Email: ffisher@stevens.edu Supported by: NSF Graduate Teaching Fellow in K-12 Education Program Associated Institution: Stevens Institute of Technology - Hoboken, NJ

2. What does a mechanical engineer do? Here are some examples from the professors at Stevens: –Materials design and modeling (advanced materials, composites, etc) –Thermodynamics (engines, energy conversion, etc) –Robotics and automated processes –Manufacturing and metal forming –Structural design –Fluid mechanics –Heat transfer and thermal design –Vibrations and acoustics –Emerging technologies: Micro-electrical-mechanical systems (MEMS), Nanotechnology, etc These are examples of the “areas” of mechanical engineering… What are some applications of “fluid mechanics”?

3. Senior Design Projects in Mech Eng Autonomous Robotic Vacuum Cleaner Piezoelectric-based Energy Harvesting Methodology Formula SAE Competition: Suspension System Automated Medication Container Openers Heavy Lift Cargo Plane NASA Exploration Systems Mission Project Design of a Robotic Push Golf Cart Human-Powered Potable Water Still Wearable Ultra Sensitive Nano Gas Sensor Hydroelectric System Design Robotic Fencing Training Dummy

4. Formula SAE car asdasdad Yield strengths Steel, high strength 700 MPa Aluminum 200 Mpa Polycarbonate 50 Mpa Rough values, depend on number of variables

5. Fencing Training Device

6. Engineers Without Borders (EWB)

7. My research interests… 1.Mechanics of Advanced Materials (relationship between force and elongation) –Shape memory alloys (online demos here)here –Piezoelectric materials –Composite materials 2.Computer Aided Engineering (CAE)

8. MRI: Acquisition of an instrument for nanoscale manipulation and experimental characterization, NSF DMI-0619762, 09/01/06-08/31/09, $326k Nanomechanics and Nanomaterials Lab (Fisher) Nanomechanics and Nanomaterials Lab http://personal.stevens.edu/~ffisher Processing-induced Crystallization of Semicrystalline Nanocomposites (Kalyon) Piezoelectric Energy Harvesting (Shi, Prasad, ECE…) Polymer Nanocomposite Nanomechanics Nanomanipulation and Nanomechanical Characterization (Shi, Yang, Zhu) Challa, Prasad & Fisher, Measurement Sci. & Tech., under review Challa, Prasad & Fisher, Smart Mat. & Struct. 18, 095029 (2009) Challa, Shi, Prasad & Fisher, Smart Mat. & Struct. 17, 015035 (2008) Mago, Kalyon & Fisher, J. Appl. Polym. Sci. 114, 1312 (2009) Mago, Fisher & Kalyon, J. Nanosci. & Nanotech. 9, 3330 (2009) Mago, Kalyon & Fisher, J. Nanomaterials 3, 759825 (2008) Mago, Fisher & Kalyon, Macromolecules 41, 8103 (2008) Fisher & Lee, Composites Science and Technology (to be submitted) Fisher, Oelkers & Lee, Composites Science and Technology (to be submitted) Using nanoparticles + processing to promote preferred crystalline phases Harvesting energy from ambient vibrations for wireless sensors In situ SEM characterization of nanomaterials and nanocomposites Novel micromechanical modeling for polymer nanocomposites

9. Vibration Energy Harvesting (VEH) VEHD Vibrating Structures Electrical Energy Electrostatic + _ Electromagnetic + _ Piezoelectric + _ High amplitude of vibration = High power output Magnetostrictive Huang et al SPIE 03

10. Potential Energy Harvesting Applications Low Power Devices Active Pixel Sensor: 100 µW Advanced Microcontroller: 0.05 W Gas Nanoscale Sensor: 200 µW Wireless Sensor Node: 300 µW Wireless Sensing Wireless Security Systems Naval Applications Tire Pressure Monitoring Remote Structural Monitoring Military Applications Portable Medical Devices Asset Tracking VEHD

11. EXAMPLE: Structural Health Monitoring (SHM) This is not good!! Could this help?

12. Current State of the Art @ UC Berkeley @ Univ of Southampton, U.K @ Georgia Tech. Commercial K1 M1 Single degree of freedom system Academic @ MIT @ NCSU, Raleigh Many of the VEH Devices are single resonant frequency based

13. Magnetically Tuned Resonant Frequency Technique Attractive Mode: ω device < ω beam Repulsive Mode: ω device > ω beam V. Challa, MG Prasad, Y. Shi, and FT Fisher (2008), Smart Materials and Structures, 17, 015035 Tuned EH Device: exp. results Tuned EH Device: modeling