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  1. B200 工学部/工学研究科
  2. B200a 雑誌掲載論文
  3. 学術雑誌

Design methodology for porous composites with tunable thermal expansion produced by multi-material topology optimization and additive manufacturing

http://hdl.handle.net/2237/00027429
http://hdl.handle.net/2237/00027429
091b7756-b941-4f59-85c3-1ae2a1564448
名前 / ファイル ライセンス アクション
manuscript_final.pdf manuscript_final (593.9 kB)
Item type 学術雑誌論文 / Journal Article(1)
公開日 2018-03-14
タイトル
タイトル Design methodology for porous composites with tunable thermal expansion produced by multi-material topology optimization and additive manufacturing
言語 en
著者 Takezawa, Akihiro

× Takezawa, Akihiro

WEKO 75269

en Takezawa, Akihiro

Search repository
Kobashi, Makoto

× Kobashi, Makoto

WEKO 75270

en Kobashi, Makoto

Search repository
アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
権利
言語 en
権利情報 ©2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
キーワード
主題Scheme Other
主題 Polymer-matrix composites (PMCs)
キーワード
主題Scheme Other
主題 Thermomechanical Computational modelling
キーワード
主題Scheme Other
主題 Finite element analysis (FEA)
キーワード
主題Scheme Other
主題 Additive manufacturing
抄録
内容記述 To realize negative thermal expansion (NTE), porous composites made of two materials with different coefficients of thermal expansion are being actively researched. NTE can be realized by taking advantage of the thermal deformation mechanisms of a composite material's internal geometry. However, in addition to negative thermal expansion, materials with anisotropic and large positive thermal expansion are also desirable for various applications. Also, additive manufacturing provides new ways to fabricate composites by layering multiple materials at arbitrary points in three-dimensional space. In this study, we developed a design methodology for porous composites, which showed defined thermal expansion characteristics, including negative and positive thermal expansion as well as isotropic and anisotropic thermal expansion. Our approach was tested based on the fabrication of a multi-material photopolymer by additive manufacturing. The internal geometries required to produce such characteristics were designed by topology optimization, which is the most effective structural optimization method for realizing macroscopic inward deformation and for maintaining stiffness. The designed structures were converted to three-dimensional models and fabricated by multi-material photopolymer additive manufacturing. Using laser scanning dilatometry, we measured the thermal expansion of these specimens, revealing well-ordered thermal expansion, from anisotropic positive thermal expansion to anisotropic negative thermal expansion, over a wide range of about −3 × 10^−4 K^−1 to 1 × 10^−3 K^−1.
言語 en
内容記述タイプ Abstract
内容記述
内容記述 ファイル公開日:2019/12/15
言語 ja
内容記述タイプ Other
出版者
言語 en
出版者 Elsevier
言語
言語 eng
資源タイプ
資源タイプresource http://purl.org/coar/resource_type/c_6501
タイプ journal article
出版タイプ
出版タイプ AM
出版タイプResource http://purl.org/coar/version/c_ab4af688f83e57aa
DOI
関連タイプ isVersionOf
識別子タイプ DOI
関連識別子 https://doi.org/10.1016/j.compositesb.2017.07.054
ISSN
収録物識別子タイプ PISSN
収録物識別子 1359-8368
書誌情報 en : Composites Part B: Engineering

巻 131, p. 21-29, 発行日 2017-12-15
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