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