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Two critical parameters that influence corrosion of engineered structures are the time of wetness where the structure is immersed or covered by an aqueous film and the corrosive character of the environment in contact with the structure.

	Thin film design with multiple substrates and materials		Atmospheric monitoring using the time of wetness sensor

Corrosion Sensors

Engineers at Southwest Research Institute (SwRI) have developed sensors that are suited to detect and characterize the presence of a conductive electrolyte.

• Sensors can be tailored to measure the presence of moisture such as precipitation, condensation or splash, which forms a conductive path between the sensor elements

• By controlling electrode compensation, the corrosive nature of the environment can be characterized

• The time of wetness can be determined by integrating the measured output

• Various sensor element sizes can be produced

Sensor output vs. solution composition

For more information about sensors and corrosion monitoring, or how you can contract with SwRI, please contact Leonardo Caseres at lcaseres@swri.org or (210) 522-5538, or 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