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      Thermal diffusivity and thermal conductivity of dispersed glass sphere composites over a range of volume fractions

      Carson, James K.
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      Thermal diffusivity and thermal conductivity of dispersed glass sphere of volume fractions.pdf
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      DOI
       10.1007/s10765-018-2392-1
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      Carson, J. K. (2018). Thermal diffusivity and thermal conductivity of dispersed glass sphere composites over a range of volume fractions. International Journal of Thermophysics, 39(6). https://doi.org/10.1007/s10765-018-2392-1
      Permanent Research Commons link: https://hdl.handle.net/10289/13295
      Abstract
      Glass spheres are often used as filler materials for composites. Comparatively few articles in the literature have been devoted to the measurement or modelling of thermal properties of composites containing glass spheres, and there does not appear to be any reported data on the measurement of thermal diffusivities over a range of filler volume fractions. In this study, the thermal diffusivities of guar-gel/glass sphere composites were measured using a transient comparative method. The addition of the glass beads to the gel increased the thermal diffusivity of the composite, more than doubling the thermal diffusivity of the composite relative to the diffusivity of the gel at the maximum glass volume fraction of approximately 0.57. Thermal conductivities of the composites were derived from the thermal diffusivity measurements, measured densities and estimated specific heat capacities of the composites. Two approaches to modelling the effective thermal diffusivity were considered.
      Date
      2018
      Type
      Journal Article
      Publisher
      Springer
      Rights
      This is a post-peer-review, pre-copyedit version of an article published in the International Journal of Thermophysics. The final authenticated version is available online at: https://link.springer.com/article/10.1007/s10765-018-2392-1
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