Structural Health Monitoring Presentation

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Structural Health Monitoring Presentation for a class project.

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Structural Health Monitoring Presentation

  1. 1. Structural Health Monitoring Conductive polymer-based molecular sensors NEEST Director: Prof. Kenneth J. Loh Aileen Vandenberg Millau Viaduc Bridge, France Nano-Engineering and Smart Structures Technologies
  2. 2. Table of Contents <ul><li>Introduction </li></ul><ul><li>SHM Basics </li></ul><ul><li>P3HT </li></ul><ul><li>Summary </li></ul><ul><li>References </li></ul>
  3. 3. Introduction The Human Nervous System A Structural Health Monitoring System
  4. 4. Introduction Why? <ul><li>Safety </li></ul><ul><li>Reliability </li></ul><ul><li>Cost </li></ul>
  5. 5. SHM Basics GOAL : Replace Schedule-Driven Maintenance with Condition-Based Maintenance Global Local
  6. 6. SHM Basics SHM Process (Farrar et al. 2001) <ul><li>Operation Evaluation </li></ul><ul><ul><li>Safety/Economic Justification </li></ul></ul><ul><ul><li>Identifying the types of damage, and the most critical type </li></ul></ul><ul><ul><li>Operational and Environmental Conditions </li></ul></ul><ul><li>Data Acquisition (DAQ) System </li></ul><ul><ul><li>Excitation Methods </li></ul></ul><ul><ul><li>Sensor Types </li></ul></ul><ul><ul><li>Number and the Location of Sensors </li></ul></ul><ul><ul><li>DAQ/Storage/Transmittal Equipment </li></ul></ul><ul><ul><li>Interval of DAQ needed </li></ul></ul><ul><ul><li>Signal Normalization and Processing Techniques </li></ul></ul><ul><ul><ul><li>Damage versus Environmental data </li></ul></ul></ul><ul><ul><ul><li>Quality </li></ul></ul></ul><ul><li>Condensation of Data </li></ul><ul><ul><li>Correlate Measured Response to Type of Damage </li></ul></ul><ul><ul><li>Statistical Model Development </li></ul></ul>Kap Shui Mun Bridge
  7. 8. P3HT Hydrogen Carbon R = C 6 H 13 Sulfur Hetrocycle Sulfur Poly(3-hexylthiophene) Common lamellar packing arrangement Electron delocalization alkyl
  8. 9. Summary <ul><li>Structural Health Monitoring is a multidisciplinary field </li></ul><ul><li>SHM Improves Safety, reliability, and cost of structure </li></ul><ul><li>P3HT is a conductive polymer that displays many electro-chemical sensing abilities </li></ul>
  9. 10. References <ul><li>Li, B, Lambeth, D. Chemical Sensing Using Nanostructured Polythiophene Transistors NANO LETTERS 2008 Vol 8, No 11 3563-3567 </li></ul><ul><li>A. Salleo, Charge Transport in Polymeric Transistors , Mat. Today , vol. 10, pp. 38-45, March 2007. </li></ul><ul><li>Giurgiutiu, V Structural Health Monitoring: with Piezoelectric Wafer Active Sensors (2007). </li></ul>

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