Enhanced Response from Engineered Nano Treated Peizofilm By Sai Narayan Sundar Advisor Dr J.P Sharma Dept. of Mechanical Engineering University of Mississippi
i: flow of current due to piezo deformation Thin Silver electrode film Thin Piezo-film Semi conducting & or Conducting Glue/Gap Piezo glued with Ni-steel Nickel steel thin sheet V V: Volts generated when deformation takes place in Piezo-film Figure 2: Architecture of Piezo-sensor
Comparison Chart Showing Capabilities & Advantages of Nano-Treated Piezo with Other Sensors Cost Reliability Sensitivity Acoustic Vibration Temperature Density Haze Humidity Water quality As bio-sensors Nano-treated Composite Piezo Film Capabilities Less than $10 24 TBA TBA TBA TBA Piezo Film Capabilities Less than $20 M M 1 H M Accelerometer $1200 M 1 Microphone $800 1 L Very high:, High: H, Medium: M, Low: L, To be assessed: TBA, Blank: Incapable JPS/UM-04
2D AFM Images for plain,coated, UV treated sensors
3D AFM images of plain,coated and UV treated sensors
SEM images at magnification of 6500 ( plain,coated,30 mins UV treated sensors)
IMPACT TESTING Dynatup Model GRC 8250 Instrumented Impact Test System Impact Velocity Range Gravity Mode: 0.6 to 3.7 m/s (8 mph) Pneumatic Mode: 3.7 to 13.4 m/s (30 mph) Impact Energy Gravity Mode: 0.6 to 303 J (224 ftlbs) Pneumatic Mode: 16 to 840 J (620 ft-lbs)
Modification 2 Ferro Fluid coating Sensor with Ferrofluid Treatment 250 Response (mv) 200 150 100 50 Sensor with magnet Sensor with ferrofluid and magnet Original sensor 0 0 5 10 15 20 25 Current (Amps)
Spectrum obtained using a Nano treated sensors and conventional Micro phone
APPLICATION IN SMART STRUCTURE: : Design fabrication and testing of Smart Sandwich Structures with 1. organized patterned nano-structured ceramic stamping on polymerized fiber substrate 2. arrays of Nan coated piezo sensors to activate layered space in between for ballooning damping to protect structures against blast and High Speed Impact Nano-structured Ceramic stampings Ballooning space layer with damping foam Nozzles Nano-coated Piezo sensors
University of Mississippi Dr. J.P. Sharma, Mechanical Engineering Department, Carrier Hall 201 C Tel: (662) 915 5698 E: Mail: <jsharma@olemiss.edu> A. Nano-Technology S.N Activities Applications Partnership Joint Project From NASA & Foundations Short Courses & Training Benefits 1 Single Layer Nano Tubes & Multilayer Nano Tubes (SLNT & MLNT) composite coatings of metals and materials 2 Characterization of surfaces using optical techniques: SEM, EDAX, AFM, TEM, ESCA-Auger tools. l 3 Nano-coated and treated hybrid smart sensors for detection and monitoring 4 Nano-Powder processing and process design Thermal, Chemical, Electrical and Mechanical properties Development of materials for enhanced properties Remote sensing, Controls, Automation, Robotics, Bio detections For sintering, Alloying, development of smart materials Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes B. Design & Manufacturing 5 Vibration and noise controls using Noise pollution in industry micro dampers and manufacturing 6 Failure diagnostics and monitoring Machine maintenance & using acoustic signals and processors Planning 7 Friction, Wear, Lubrication (Solid Reduction of friction, wear, and Boundary and Fluid) and corrosion by choice of Corrosion suitable lubricants & planning 8 Impact testing of materials Testing for impact for damage control & quality Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes C. Courses for In plant training 9 Tribology ( Friction, Wear, Failure prevention & Yes Lubrication and Corrosion) maintenance 10 Process Design Development of process & Yes quality 11 Mechatronics Electro-mechanical systems Yes 12 Sensor design For quality control & Yes automation 13 Quality control & 6-Sigma Reliability, cost control and Yes Yes manufacturability 14 Modal analysis Performance planning & Yes Yes development 15 Diagnostics & Monitoring Failure prevention & maintenance planning Yes Yes Yes
Thank you»questions?