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

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. 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 corrosion—time of wetness sensors capabilities at SwRI or how you can contract with SwRI, please contact Garth Tormoen at gtormoen@swri.org or (210) 522-2645, or Elizabeth Trillo, Ph.D., at etrillo@swri.org or (210) 522-4210.

| Materials Engineering Department | Mechanical & Materials Engineering Division | SwRI Home |

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.

October 16, 2008