A high-precision method for measuring interface contact thermal resistance by bidirectional heat flow method

A technology of contact thermal resistance and heat flow method, which is applied in the field of testing, can solve problems such as not being perfect, and achieve the effects of improving test accuracy, facilitating thermal protection treatment, and realizing one-dimensional heat conduction
CN109813753BActive Publication Date: 2022-08-05GUILIN UNIV OF ELECTRONIC TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
GUILIN UNIV OF ELECTRONIC TECH
Publication Date
2022-08-05

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Abstract

The invention discloses a high-precision method for measuring interface contact thermal resistance by a bidirectional heat flow method, which belongs to the technical field of testing. In the bidirectional heating heat flow method adopted in the present invention, a heating body is arranged at the center of the test body, and multiple layers are arranged around the heating body. Compared with the end, the vacuum heat shield is easier to be insulated, and realizes one-dimensional heat conduction of the sample pair. The invention can measure the interface contact thermal resistance of two groups of samples to the material at the same time; and adopts advanced non-contact thermal imaging technology to perform average processing of multiple data points, which can realize high temperature, transient and micro-nano scales with higher precision The high-precision interface contact thermal resistance test can be realized, and the interface contact thermal resistance test can be realized from normal temperature to 2700℃.
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Description

technical field

[0001] The invention belongs to the technical field of testing, in particular to a method for testing interface contact thermal resistance. Background technique

[0002] The solid-solid interface contact heat transfer phenomenon under high temperature conditions widely exists in the fields of aerospace, energy power, and thermonuclear reactions. The precise determination of the contact thermal resistance parameters is particularly important for the safe and reliable design of the device or system. Taking hypersonic aircraft as an example, due to aerodynamic heating, the surface temperature of the aircraft will exceed 1000°C, and a thermal protection system needs to be installed to ensure the safety of the aircraft. , the high-temperature interface contact resistance between thermal protection materials is one of the key parameters in the design of thermal protection systems for hypersonic aircraft. In the past, due to the lack of testing methods and systems...

Claims

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