S191011 エックス線CTによる炭素発泡体の画像ベース解析法の開発([S191-01]大気突入・減速技術(1))

DOI Web Site
  • 福井 大輝
    名古屋大学大学院工学研究科航空宇宙工学専攻
  • 酒井 武治
    名古屋大学大学院工学研究科航空宇宙工学専攻

書誌事項

タイトル別名
  • S191011 Development of Image based analysis method of carbon foams using X-ray CT

抄録

A procedure is established to digitize a three dimensional structure within a carbon foam using a commercially available X-ray Computed Tomography (CT). The digitized model will be used to evaluate radiative transport coefficients such as absorption and scattering coefficients of the carbon foam. The obtained radiative transport coefficients will be used to calculate radiative transfer in the porous material, which is believed to strongly affect a thermal protective performance of an atmospheric entry vehicle. For the first step to achieve the objectives of the present study, X-ray images are obtained by using a micro-focus X-ray CT system(Shimadzu, SMX-100CT), and the validity of the 3-dimensional digitized model so obtained is discussed. In the present study, whether a representative elementary volume (REV) is taken or not within the digitized model is examined. It should be noted that the REV represents a minimum size of the digitized model within which a macroscopic nature of a material such as porosity can be replicated. The results show that even though a carbon-based material is known to be difficult to model a three-dimensional sturucture by using a X-ray CT due to its low absorptivity against X-ray beams, we can successfully reproduce the macroscopic porosity value of about 90% by using a digitized model larger than REV.

収録刊行物

  • 年次大会

    年次大会 2013 (0), _S191011-1-_S191011-4, 2013

    一般社団法人 日本機械学会

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