Method for analyzing multi-layer materials from one-sided pulsed thermal imaging
First Claim
1. A computer-implemented method for automated analysis of thermal imaging data for multi-layer materials comprising the steps of:
- a computer forstoring a plurality of model solutions for a multi-layer material system;
acquiring experimental thermal imaging data;
said experimental thermal imaging data including test and sample parameters, said test and sample parameters including a heat capacity of each layer of the multi-layer materials;
fitting a model solution with the experimental thermal imaging data by adjusting the model parameters including thermal properties and thickness of each layer;
responsive to the model result matching the experimental thermal imaging data, identifying thermal properties and thickness parameters for the multi-layer materials; and
responsive to the identified thermal properties and thickness parameters for the multi-layer materials, constructing thickness, thermal conductivity, and absorption maps for the multi-layer materials.
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Accused Products
Abstract
A method, apparatus, and computer program product provides automated analysis of thermal imaging data for multi-layer materials based upon a theoretical model of a multi-layer material system, which is solved numerically. The computer-implemented method effectively processes the volume heating effect for thermal barrier coatings (TBCs), since quantitative evaluation of TBC thickness and conductivity is particularly important. TBC thickness is a processing parameter and required to be monitored. TBC conductivity is a measure of TBC quality because it is directly related with TBC density/porosity, microcracking and interface cracks. Because this method is an imaging technology, it can be used for fast and 100% area inspection of larger TBC surfaces, such as combustor liners.
13 Citations
18 Claims
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1. A computer-implemented method for automated analysis of thermal imaging data for multi-layer materials comprising the steps of:
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a computer for storing a plurality of model solutions for a multi-layer material system; acquiring experimental thermal imaging data;
said experimental thermal imaging data including test and sample parameters, said test and sample parameters including a heat capacity of each layer of the multi-layer materials;fitting a model solution with the experimental thermal imaging data by adjusting the model parameters including thermal properties and thickness of each layer; responsive to the model result matching the experimental thermal imaging data, identifying thermal properties and thickness parameters for the multi-layer materials; and responsive to the identified thermal properties and thickness parameters for the multi-layer materials, constructing thickness, thermal conductivity, and absorption maps for the multi-layer materials. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. Apparatus for automated analysis of thermal imaging data for multi-layer materials from one-sided pulsed thermal imaging comprising:
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a data acquisition and control computer, said data acquisition and control computer storing a plurality of model solutions for a multi-layer material system; said data acquisition and control computer for performing the steps of;
acquiring experimental thermal imaging data;
said experimental thermal imaging data including test and sample parameters, said test and sample parameters including a heat capacity of each layer of the multi-layer materials;
fitting a model solution with the experimental thermal imaging data by adjusting the model parameters including thermal properties and thickness of each layer; and
responsive to the model result matching the experimental thermal imaging data, identifying thermal properties and thickness parameters for the multi-layer materials; and
responsive to the identified thermal properties and thickness parameters for the multi-layer materials, constructing thickness, thermal conductivity, and absorption maps for the multi-layer materials. - View Dependent Claims (16, 17, 18)
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Specification