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Corrosion—Time of Wetness Sensors

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Multielectrode Array Sensor (MAS)

Coating Degradation Sensor (CDS)

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	Wet Sensor can be used to evaluate environmental corrosivity
	Coating Degradation Sensor (CDS)
	Multi-electrode Array Sensor (MAS)

To help monitor the integrity of engineering structures and systems, Southwest Research Institute (SwRI) has been actively engaged in developing new tools and devices. We offer extensive experience in solving industrial corrosion problems. Coupled with advanced manufacturing methods and techniques, new devices have been developed and successfully used to monitor corrosion including:

• Corrosion/Wetness Sensor

  • Thin film design with multiple substrates and materials

  • Can be used to evaluate environment corrosivity

• Coating Degradation Sensor (CDS)

  • U.S. Patent No. 6,911,828

  • Differences in coating performance detected

  • Coating defects such as fisheyes or mechanical damage are also detected

  • Sensor is embedded and can detect changes prior to onset of corrosion

• Multi-electrode Array Sensor (MAS)

  • U.S. Patent No. 6,683,463 and U.S. Patent No. 6,987,396

  • Near real time measurement of uniform and localized corrosion rate

  • Detection in a wide variety of environments (under salt films, high resistivity environments, under bio-films, in the atmosphere)

• Corrosion Damage Sensor

  • Measures the amount of corrosion damage accumulated

  • Multiple element sensor can be used to acquire data on multiple materials

The sensor devices have been incorporated into several field deployable configurations for corrosion rate measurements and evaluations. These sensors have also been grouped with other commercial off-the-shelf sensor technologies such as relative humidity and temperature sensors. A suite of sensors integrated onto a small battery-powered data acquisition system provides a versatile platform for many applications.

For more information about our sensors and corrosion monitoring programs, or how you can contract with SwRI, please contact James F. Dante, at jdante@swri.org or (210) 522-5458.

corrosiontechnology.swri.org

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Southwest Research Institute^® (SwRI^®), headquartered in San Antonio, Texas, is a multidisciplinary, independent, nonprofit, applied engineering and physical sciences research and development organization with 11 technical divisions.

January 03, 2013