Advanced Manufacturing for Bio-Inspired Materials and Structures
Advanced Manufacturing for Bio-Inspired Materials and Structures Chuck Zhang School of Industrial & Systems Engineering and Georgia Tech Manufacturing Institute March 25, 2015 Advanced Manufacturing Research at Georgia Tech Manufacturing Institute • Development of Multifunctional Composites/Nanocomposites • Scalable Nanomanufacturing • ICME-based Process Modeling, Monitoring and Control for High Quality and Repeatable Additive Manufacturing • Additive Manufacturing/Printed Electronics for Smart Materials with Advanced Sensing • Integration of 3D Printing and Printed Electronics • Additive Manufacturing for Medical Applications • Additive Manufacturing for Bio-Inspired Materials and Structures The information presented herein cannot be duplicated or extracted without permission from GTMI Realization or Fabrication of BioInspired Materials and Structures • Fabrication with conventional manufacturing processes • Synthesis using special processes (e.g. bio or chemical (auxetic foams)) • Assembly of components • Typical Challenge: • Complex structure, impossible or hard to manufacture • Difficult to achieve uniform structures • New Manufacturing Paradigm: • Additive Manufacturing (3D Printing) The information presented herein cannot be duplicated or extracted without permission from GTMI Multi-Material 3D Printing with Jetted Photopolymer Printing Stratasys Connex® 350 Multi-Material 3D Printer at GTMI GTMI’s Printed Electronics Manufacturing Capabilities • Optomec Aerosol Jet® Printing (AJP) system with high resolution printing (~10µm printed line width and nanoscale (50-100nm) thickness) • Characterization tools for materials and printed devices • Printed electronics prototypes fabricated at GTMI with the AJP system: strain, temperature and gas sensors, pressure sensors and actuators, organic transistors, RFID tag, high frequency antenna, and energy storage devices Thermal conductivity measurement Optomec AJP 300 PE System at GTMI Surface profiler The information presented herein cannot be duplicated or extracted without permission from GTMI Electrical conductivity measurement AJP Can Work with a Wide Range of Ink and Substrate Materials Inks Metal NP CNT Graphite CNT-Silver NP Polyimide Substrates Polyimide (Flexible Films) Carbon Fiber Prepreg (Composites) 3D Flexible Surface Coated Surface The information presented herein cannot be duplicated or extracted without permission from GTMI 3D Printed Part Prototypes/Samples Printed at GTMI Strain sensor array printed with silver ink Temperature sensor printed with carbon nanotubes Interconnects linked with IC chip pins RFID tag on silicone RFID tag and antenna array on carbon fiber prepreg High frequency antenna The information presented herein cannot be duplicated or extracted without permission from GTMI Bio-Inspiration: Auxetic Structure Salamander skin Auxetic structure The information presented herein cannot be duplicated or extracted without permission from GTMI Fabrication of Auxetic Structures with Multi-Material 3D Printing 3D printed auxetic structure samples Volume change: ~-30% (compression) to 20% (stretch) FEA results indicated a 24% volume change with the additive manufactured auxetic structure The information presented herein cannot be duplicated or extracted without permission from GTMI Bio-Inspired Heat-Dissipation Structure Natural structure of blood vein Fractural branches achieve minimum energy expenditure by following the Murray’s Law: BID heat spreader prototype The information presented herein cannot be duplicated or extracted without permission from GTMI Bio-inspired hear spreader design Applications of Bio-Inspired Materials and Structures Pressure sensors Residual limb Thermal electrical Printed sensors coolers (temperature and moisture) TABS-liner (Temperature management, Anti-pistoning, Biocide and Sensing) Hydrogel Phase change material Auxetic structure Hear spreader Carbon fiber composites Electronic modules Sponsored by the Department of Veterans Affairs Innovation Initiative (VAi2) The information presented herein cannot be duplicated or extracted without permission from GTMI Ongoing and Planned Research • Adding sensing functions/intelligence to bioinspired materials and structures with AJP process • Demonstrate more complex bio-inspired structures with modified AJP process • Development of stretchable sensors for bio-inspired applications • Scalable manufacturing of bio-inspired materials and structures The information presented herein cannot be duplicated or extracted without permission from GTMI Questions & Comments Thanks! Chuck Zhang Tel: (404) 894-3280 Email: chuck.zhang@gatech.edu
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