Development of measurement method of thermal conductivity distribution for composite materials and its application to fiber orientation detection

• Project/Area Number: 16H04591
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Aerospace engineering
• Research Institution: Nagoya University
• Principal Investigator: Nagano Hosei 名古屋大学, 工学研究科, 教授 (10435810)
• Project Period (FY): 2016-04-01 – 2019-03-31
• Project Status: Completed (Fiscal Year 2018)
• Budget Amount: ¥17,420,000 (Direct Cost: ¥13,400,000、Indirect Cost: ¥4,020,000); Fiscal Year 2018: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2017: ¥2,860,000 (Direct Cost: ¥2,200,000、Indirect Cost: ¥660,000); Fiscal Year 2016: ¥13,130,000 (Direct Cost: ¥10,100,000、Indirect Cost: ¥3,030,000)
• Keywords: 炭素系複合材料 / 熱伝導率 / 繊維配向同定法 / サーモグラフィ / 複合材料 / 熱拡散率 / ロックインサーモグラフィ / 炭素繊維複合材料 / 繊維配向同定 / マイクロスケール / 異方性 / 熱物性 / 配向性 / ロックインサーモグラフィー

Outline of Final Research Achievements

In this study, a new method to measure three dimensional thermal diffusivity for carbon fiber reinforced plastics in both micro-schale and macro-schare with high accuracy has been developed. This method has been applied to fiver orientation detection method for carbon fiber reinforced thermoplastic, and measurement technique and theory to obtain both thermal conductivity distribution and fiber orientation distribution have been developed.

Academic Significance and Societal Importance of the Research Achievements

近年自動車などに応用が期待される熱硬化性炭素系複合材料は繊維の分散に偏りが生じうるため，その分布を非破壊で迅速に検知できる手法が求められている。本研究では独自の熱拡散率分布測定手法を確立し，本手法を複合材料の配向同定法に応用することで，従来の技術にはない非接触式配向同定法の創出に貢献した。

Research Products

• [Journal Article] ロックインサーモグラフィを用いた炭素繊維複合材料の配向同定法の提案 (2018)
  • Author(s): 長野方星
  • Journal Title: 検査技術 Volume: 23 Pages: 1-4
  • NAID: 40021640861
• [Journal Article] Novel Fiber Orientation Evaluation Method for CFRP/CFRTP based on Measurement of Anisotropic In-plane Thermal Diffusivity Distribution (2017)
  • Author(s): Ryohei Fujita, and Hosei Nagano
  • Journal Title: Composites Science and Technology Volume: 140 Pages: 1162-122
  • DOI: 10.1016/j.compscitech.2016.12.006
  • Peer Reviewed / Acknowledgement Compliant
• [Presentation] マイクロスケール3次元熱拡散率および内部界面熱抵抗測定 (2018)
  • Author(s): 辻輝，上野藍，長野方星
  • Organizer: 第55回日本伝熱シンポジウム
• [Presentation] 3次元熱拡散率分布測定によるCFRP/CFRTPの繊維配向同定法 (2017)
  • Author(s): 藤田涼平，長野方星
  • Organizer: 第 8 回日本複合材料会議
  • Place of Presentation: 東京
  • Year and Date: 2017-03-16
• [Presentation] 3-D thermal diffusivity measurement and evaluation of CFRTP’s fiber orientation with thermography (2017)
  • Author(s): Ryohei Fujita, Hosei Nagano
  • Organizer: 21st European Conference on Thermophysical Properties, ETPC2017
  • Int'l Joint Research
• [Presentation] Quantitative fiber orientation evaluation of CFRP/CFRTP based on 3-D thermal diffusivity measurement using active lock-in thermography (2017)
  • Author(s): Ryohei Fujita, Hosei Nagano
  • Organizer: 15th Asia Pacific Conference for Non-Destructive Testing , APCNDT2017
  • Int'l Joint Research
• [Presentation] Measurement of in-plane thermal diffusivity distribution for carbon fiber reinforced plastics having various fiber specifications (2016)
  • Author(s): Ryohei Fujita, and Hosei Nagano
  • Organizer: The 11th Asian Thermophysical Properties Conference
  • Place of Presentation: Yokohama
  • Year and Date: 2016-10-02
  • Int'l Joint Research
• [Book] 炭素繊維およびその繊維複合材料における 分析試験，評価解析に関する最新事例集 (2019)
  • Author(s): 長野方星，他多数
  • Total Pages: 500
  • Publisher: 技術情報協会
• [Remarks] 革新的繊維配向同定手法の研究開発（研究室ホームページ）
  • URL: http://www.eess.mech.nagoya-u.ac.jp/theme02.html
• [Remarks] 複合材料の繊維配向を非破壊で迅速に評価する手法を開発（名古屋大学プレスリリース）
  • URL: http://www.nagoya-u.ac.jp/about-nu/public-relations/researchinfo/upload_images/20161219_egg.pdf
• [Patent(Industrial Property Rights)] 含有率情報取得装置、密度情報取得装置、含有率情報取得方法、密度情報取得方法、およびプログラム (2018)
  • Inventor(s): 長野方星，藤田涼平
  • Industrial Property Rights Holder: 長野方星，藤田涼平
  • Industrial Property Rights Type: 特許
  • Filing Date: 2018