Measurement of Thermal Diffusivity Distribution for Murray and Murchison Meteorites Using Lock-in Thermography
Measurement of Thermal Diffusivity Distribution for Murray and Murchison Meteorites Using Lock-in Thermography
复制标题
使用锁定热成像仪测量默里和默奇森陨石的热扩散率分布
DOI：
10.1007/s10765-022-03026-9
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发表时间：
2022
影响因子：
2.2
通讯作者：
Nagano Hosei
中科院分区：
文献类型：
--
作者：
Ishizaki Takuya;Kawahara Takeru;Tomioka Kota;Tanaka Satoshi;Sakatani Naoya;Nakamura Tomoki;Nagano Hosei
了解热物理性质（热扩散率、比热等）是很重要的。陨石和小行星的小样本，以了解太阳系起源的热历史。然而，目前还没有关于用非破坏性和非接触方法测量小和/或不规则形状样品（如陨石或小行星颗粒）的热物理性质的研究。本研究发展一种利用锁相热像法量测平板状及颗粒状样品之面内及面外热扩散率的新方法。该方法通过选择合适的温度响应检测方向，能够同时测量平板和颗粒状样品的热扩散率。本文对由两种类型的CM 2陨石（Murray和Murchison）制成的五种陨石样品的热扩散率进行了测定。结果，详细的角分布的面内和面外的热扩散率被揭示。测量结果表明，由于球粒和基质成分的不均匀性，存在局部的热各向异性。结果还表明，高的陨石球粒的组成含量比导致高的平均值的热扩散率。测得的热扩散率范围为0.24-0.78 mm 2·s-1，与采用脉冲加热法和样品破坏、加工等常规方法测得的结果一致。
It is important to know the thermophysical properties (thermal diffusivity, specific heat, etc.) for meteorites and small samples from asteroids to understand the thermal history of the solar system origin. However, there is no research on thermophysical properties measurement with a non-destructive and non-contact method for small and/or irregularly shaped samples such as meteorites or asteroid particles. In this study, a new method to measure in-plane and out-of-plane thermal diffusivities of flat-plate shape and granular shape samples by using lock-in thermography is developed. This method enables the ability to measure the thermal diffusivity of both flat-plate and granular shape samples by selecting the suitable detecting direction of the temperature response. In this paper, the thermal diffusivity of five kinds of meteorites samples made of two types of CM2 chondrites (Murray and Murchison) were evaluated. As a result, the detailed angular distribution of the in-plane thermal diffusivity and the out-of-plane thermal diffusivity was revealed. The measurement results showed that there is local thermal anisotropy caused by the heterogeneity in the composition of the chondrules and matrix. The results also showed that the high compositional content ratio of chondrules leads to a high average value of thermal diffusivity. The range of the obtained thermal diffusivity was 0.24–0.78 mm2·s−1, and this result showed good agreement with the reported value by the conventional method consisted of pulsed heating method with sample destruction and processing.
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影响因子：
2.2
作者：
SJ C.P.OPEIL;SJ G.J.CONSOLMAGNO;D. Safarik;D. T. Britt
通讯作者：
SJ C.P.OPEIL;SJ G.J.CONSOLMAGNO;D. Safarik;D. T. Britt
使用锁定热成像技术测量碳纤维增强塑料的三维各向异性热扩散率
影响因子：
2.2
作者：
T. Ishizaki;H. Nagano
通讯作者：
H. Nagano
DOI：
10.4131/jshpreview.24.108
发表时间：
2014
期刊：
影响因子：
--
作者：
M. Osako;A. Yoneda;E. Ito
通讯作者：
E. Ito
影响因子：
3.3
作者：
Ishizaki, T.;Nagano, H.
通讯作者：
Nagano, H.
影响因子：
3.2
作者：
F. Herbert
通讯作者：
F. Herbert