Accession Number : ADD016422

Title :   Corrosivity Sensor.

Descriptive Note : Patent, Filed 10 Sep 92, patented 10 May 94,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Agarwala, Vinod S ; Pearlstein, Fred

Report Date : 10 May 1994

Pagination or Media Count : 6

Abstract : A lightweight corrosivity sensor is provided which is thin enough to be embedded between the layers of a composite structure or placed on a surface beneath a coating. It comprises a thin non-conductive base and two electrically isolated conductive elements fixed to the surface thereof. Each conductive element comprises a bus bar and a plurality of strips extending from the bus bar and interdigitated with the strips of the other conductive element. The corrosivity sensor is connectable to a current measuring means for measuring the current across the two conductive elements as an indicator of the presence of a corrosive environment. A masking method of manufacturing such a sensor is also provided.

Descriptors :   *COATINGS, *COMPOSITE STRUCTURES, *PATENTS, *CORROSION, *DETECTION, ENVIRONMENTS, INDICATORS, LAYERS, LIGHTWEIGHT, MANUFACTURING, MASKING, STRUCTURES, SURFACES, BUS CONDUCTORS, THINNESS, ELECTRICAL CONDUCTIVITY, CURRENTS, LAMINATES, AIRCRAFT, COMPOSITE MATERIALS, STRIP TRANSMISSION LINES

Subject Categories : Laminates and Composite Materials
      Properties of Metals and Alloys
      Coatings, Colorants and Finishes

Distribution Statement : APPROVED FOR PUBLIC RELEASE