Argonne National Laboratory

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  • 2D layer property images, automated processing.
    Intellectual Property Available to License

    US Patent 7,538,938; US Patent 9,816,952 B2; US Patent 8,465,200; US Patent 7,365,330
    • Thermal Multi-layer Coating Analysis (IN-05-125), (IN-14-032)
    Illustration of pulsed thermal imaging of a 4-layer material system (L = Layer).

    The Invention 

    Pulsed thermal imaging is widely used for nondestructive evaluation of advanced materials and components. Thermal imaging methods to analyze single-layer materials are well developed. However, a general method for analyzing multi-layer materials and coatings/films has not been developed due to the complexity of material systems and lack of an analytical solution. This technology provides a general method, test system including a filter, and numerical algorithm for automated analysis of thermal imaging data for multi-layer coating materials. 

    Argonne’s pulsed thermal imaging-multilayer analysis method can accurately measure coating thermal conductivity and heat capacity (and/or thickness) distributions over an entire component’s surface. The method analyzes a temporal series of measured thermal imaging data to determine the properties for all coating layers based on a multilayer model. Argonne’s invention is currently the only method that can analyze coatings of more than one layer, is fully automated to produce 2D layer property images, and has validated high accuracy.

    Argonne’s approach includes an infrared filter for flash lamps to eliminate the flash’s infrared radiation, ensuring accurate detection of surface temperature during pulsed thermal imaging tests. 

    Key to Argonne’s thermal multi-layer analysis method is the numerical algorithm used for automated analysis of thermal imaging data for multi-layer materials, implemented in dedicated, Argonne-created software that allows for complete data-processing automation without the need of user intervention.

    Photograph (left) and thickness image (right) of a thermal barrier coating specimen with four sections of thicknesses.

    Benefits 

    • Allows fast 2D imaging of multi-layer material properties of an object from one surface 
    • All-in-one solution that includes method, optical filter, and analytical software for thermal multi-layer material analysis 
    • Imaging is nondestructive and fast 
    • Eliminates infrared radiation to assure data accuracy 
    • Automated analysis of imaging data 

    Applications and Industries 

    • Multi-layer coating materials development 
    • Manufacturing quality control 
    • Coating degradation monitoring 
    • Medical applications 

    Developmental Stage 

    Proof of Concept: the technology has been tested and proven to work for coated engine parts. 

    Argonne Inventions 

    • IN-05-125, Optical Filter for Flash Lamps in Pulsed Thermal Imaging View the patent.
    • IN-14-032, Method and Apparatus for Material Thermal Property Measurement by Flash Thermal Imaging View the patent.
    • IN-06-017, Method for Thermal Tomography of Thermal Effusivity from Pulsed Thermal Imaging View the patent

  • Aaron M. Fluitt

    Aaron works with directorate leaders and staff to develop and execute new science and technology initiatives.

  • Lee C. Zachos

    Lee serves as an advisor to Laboratory Director Paul Kearns to drive forward the laboratory’s vision and stakeholder relationships.

  • Gregory J. Halder

    Greg supports industry partnerships and technology commercialization for Argonne’s energy storage R&D programs, including as part of the Argonne Collaborative Center for Energy Storage Science (ACCESS) team.