Characterization of Multilayer Coatings Using Shaped Field Electromagnetic Sensor Arrays

During Phase I we demonstrated the feasibility of using JENTEK"s MWM sensing technology to accurately characterize multi-layer coating stack-ups with five unknown properties. This program will build on the Phase I effort and work toward a practical implementation of this technology that can be operated in field or depot settings. In Phase II we will improve on key aspects of this approach, bringing it to a TRL of 6 or above. In particular, we will (i) design a multiple-segment, multiple-period MWM sensor that is adapted specifically for multi-layer coatings on selected Air Force platforms; (ii) enhance the multiple-unknown and other data processing algorithms; (iii) obtain or acquire access to samples that are more representative of the actual materials and stack-ups used by the Air Force; and (iv) investigate another coating application of interest to the Air Force. JENTEK will work with Northrop Grumman Aerospace Systems and Lockheed Martin who have both expressed their interest in working with JENTEK as subcontractors. JENTEK will provide a system upgrade to the Air Force"s existing JENTEK system to serve as a prototype for a focus application. BENEFIT: If this program is successful, the Air Force would be provided with a tool to detect and image the thickness of individual layers of multi-layer coating stack-ups. This would reduce maintenance costs and improve fleet readiness and mission capability. The commercial market for other multi-layered coatings is substantial, including application in commercial aerospace, for spacecrafts, and land-based turbines.