Thermal measurement apparatus and methods for anisotropic thermal materials
| DWPI Title: System for measuring thermal property of heterogeneous anisotropic sample for use with aircraft-mounted electronic device, has computing system that outputs indication of portion of sample to which thermal conductivity value pertains |
| Abstract: A system for characterizing thermal properties of thermally anisotropic heterogeneous samples includes a heating element, a first temperature sensing device, a second temperature sensing device, and a computing system. The heating element is positioned at a first location within a sample and heats the sample. The first temperature sensing device outputs data indicative of temperatures of the first location to the computing device. The second temperature sensing device outputs data indicative of temperatures of the second location to the computing device. The computing device computes a thermal conductivity of the sample based upon the temperatures of the first location. The computing device further outputs an indication of a portion of the sample to which the thermal conductivity pertains based upon the second temperatures. |
| Use: System for measuring a thermal property of a heterogeneous anisotropic sample for use with an aircraft-mounted electronic device. |
| Advantage: The thermal conductivity of the heterogeneous anisotropic sample can be determined effectively. The thermocouples can be positioned proximal to interfaces between layers to avoid changing thermal contact resistance between the layers, with maintaining the ability to determine when a heat wave emanating from the heating element reaches a layer. |
| Novelty: The system (100) has a heating device configured to heat the sample at a first location. A first temperature sensing device (106) is configured to output an indication of a temperature of the sample at the first location. A second temperature sensing device (108) is configured to output an indication of a temperature of the sample at a second location. A computing system (110) is configured to determine a temperature value of the sample at the first location based upon the output of the first temperature sensing device. A thermal conductivity value associated with the sample is computed based upon the determined temperature values. An indication of a portion of the sample is outputted to which the thermal conductivity value pertains, based upon the temperature of the sample at the second location. |
| Filed: 8/4/2020 |
| Application Number: US16984894A |
| Tech ID: SD 15115.0 |
| This invention was made with Government support under Contract No. DE-NA0003525 awarded by the United States Department of Energy/National Nuclear Security Administration. The Government has certain rights in the invention. |
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