Accession Number:
AD1004161
Title:
Radio Frequency Identification (RFID) Based Corrosion Monitoring Sensors. Part 2: Application and Testing of the Coating Materials
Descriptive Note:
Technical Report
Corporate Author:
DRDC Atlantic Research Centre - Dockyard Laboratory Pacific Victoria, BC Canada
Personal Author(s):
Report Date:
2014-12-22
Pagination or Media Count:
17.0
Abstract:
Cost-effective Radio Frequency Identification RFID transponders tags were investigated for wireless corrosion monitoring by applying a metal-filled conductive composite coating onto the surface of the plastic tags. The coating acted as an electromagnetic interference EMI shield by attenuating or completely blocking the radio-frequency signals transmitted between the transceiver reader and the tag. When the coated RFID tag was exposed to a corrosive environment through accelerated corrosion tests or marine atmospheric tests, the degradation of the coating decreased the EMI shielding effectiveness and resulted in a strengthened communication between the reader and the tag. By establishing a correlation between the corrosion rate of the metal object to be monitored and the sensor responding performance, it was possible to monitor cumulative corrosion damage via wireless sensor reading.