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Introduction to Mechanical Engineering GK12 Student: Kyle Barr Professor Frank Fisher

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.

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Introduction to Mechanical Engineering GK12 Student: Kyle Barr Professor Frank Fisher

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  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 ProgramAssociated 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… • Mechanics of Advanced Materials (relationship between force and elongation) • Shape memory alloys (online demos here) • Piezoelectric materials • Composite materials • Computer Aided Engineering (CAE)

  8. Nanomechanics and Nanomaterials Lab (Fisher) Processing-induced Crystallization of Semicrystalline Nanocomposites (Kalyon) Piezoelectric Energy Harvesting (Shi, Prasad, ECE…) Harvesting energy from ambient vibrations for wireless sensors Using nanoparticles + processing to promote preferred crystalline phases • Mago, Kalyon & Fisher, J. Appl. Polym. Sci.114, 1312 (2009) • Mago, Fisher & Kalyon, J. Nanosci. & Nanotech.9, 3330 (2009) • Mago, Kalyon & Fisher, J. Nanomaterials3, 759825 (2008) • Mago, Fisher & Kalyon, Macromolecules41, 8103 (2008) • 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) Nanomanipulation and Nanomechanical Characterization (Shi, Yang, Zhu) Polymer Nanocomposite Nanomechanics Novel micromechanical modeling for polymer nanocomposites In situ SEM characterization of nanomaterials and nanocomposites • MRI: Acquisition of an instrument for nanoscale manipulation and experimental characterization, NSF DMI-0619762, 09/01/06-08/31/09, $326k • Fisher & Lee, Composites Science and Technology (to be submitted) • Fisher, Oelkers & Lee, Composites Science and Technology (to be submitted) Nanomechanics and Nanomaterials Lab http://personal.stevens.edu/~ffisher

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

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

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

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

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

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