Characterization of Anisotropic and Irregularly-Shaped Materials by High-Sensitive Thermal Conductivity Measurements
Characterization of Anisotropic and Irregularly-Shaped Materials by High-Sensitive Thermal Conductivity Measurements
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DOI：
10.4028/www.scientific.net/ssp.124-126.1641
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发表时间：
2007-06
期刊：
影响因子：
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通讯作者：
M. Gustavsson;H. Nagai;T. Okutani
中科院分区：
文献类型：
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作者：
M. Gustavsson;H. Nagai;T. Okutani
在现代热分析和设计中，涉及固体部件中的热传输，这是必要的，应用不同的模型的热热流在散装材料和固体表面界面的形状，无论是一个层或固-固界面。当应用不同的测量技术时，也会出现类似的差异。为了消除测量探头和样品材料之间的接触热阻的影响，已经专门开发了一些技术来进行体特性的测量。本文介绍了使用瞬态平面源技术测量各种几何形状的金属和陶瓷物体（如细棒、薄板以及涂层或层）的热导率。这种技术的最新发展，包括它的能力，被应用在测量的情况下，涵盖了广泛的长度和时间尺度的摘要概述，也提出。通过比较测量，可以高灵敏度地记录各向异性的结构变化。该技术可应用于需要非破坏性测试的情况，例如用于机械或拉伸测试的特定几何形状的样品。
In modern thermal analysis and design involving thermal transport in solid components it is necessary to apply different modeling of the thermal heat flow in bulk material and across solid surface interfaces either in shape of a layer or a solid-solid interface. Similar differences occur when applying different measurement techniques. Some techniques have been developed specifically for the purpose of performing measurements of bulk properties by removing the influence from thermal contact resistance between the measurement probe and the sample material. Thermal conductivity measurements on metal and ceramic objects of various geometries such as thin bars, thin sheets as well as coatings or layers are here described when using the Transient Plane Source technique. A summary overview of the recent developments of this technique, including its ability to be applied in measurement situations covering a wide range of length and time scales, is also presented. Structural changes in anisotropy can be recorded with high sensitivity by comparative measurements. The technique may be applied in situations requiring non-destructive testing, e.g. samples of particular geometry used for mechanical or tensile testing.