Clarification of high-speed transformation mechanisms using exoskeletal elasticity in insects and its engineering applications.

• Project/Area Number: 17H04911
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Single-year Grants
• Research Field: Intelligent mechanics/Mechanical systems
• Research Institution: Kyushu University (2018-2020); The University of Tokyo (2017)
• Principal Investigator: Saito Kazuya 九州大学, 芸術工学研究院, 講師 (40628723)
• Project Period (FY): 2017-04-01 – 2021-03-31
• Project Status: Completed (Fiscal Year 2020)
• Budget Amount: ¥23,920,000 (Direct Cost: ¥18,400,000、Indirect Cost: ¥5,520,000); Fiscal Year 2020: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000); Fiscal Year 2019: ¥3,250,000 (Direct Cost: ¥2,500,000、Indirect Cost: ¥750,000); Fiscal Year 2018: ¥7,930,000 (Direct Cost: ¥6,100,000、Indirect Cost: ¥1,830,000); Fiscal Year 2017: ¥10,660,000 (Direct Cost: ¥8,200,000、Indirect Cost: ¥2,460,000)
• Keywords: 生物模倣工学 / 展開構造 / 可変構造 / 航空宇宙工学 / 折紙工学 / ３Dプリンタ / デジタルファブリケーション / デジタル・ファブリケーション / スマート構造 / 宇宙展開構造 / 甲虫 / コンプライアントメカニズム / スマート / デバイス設計・製造プロセス / 機械工作・生産工学

Outline of Final Research Achievements

This study aims to clarify the high-speed morphing mechanisms found in the exoskeleton organisms represented by the foldable wings in insects and to apply them in engineering. We proposed new observing techniques using the high-speed camera and the micro-CT and constructed new design method that can be applied to various applications and scales from huge space structures to minute medical devices. Origami geometry was used to clarify the design principle for wing folding in beetles and earwigs, and various prototypes of the deployable structures were implemented by using the digital fabrication techniques.

Academic Significance and Societal Importance of the Research Achievements

大きな構造を小さく折り畳む技術は巨大な宇宙展開構造から傘や扇子などの日用品まで様々な目的やスケールで用いられている．昆虫の翅は高速の羽ばたきに耐えられる強度・剛性と高速かつコンパクトな折り畳みの両方を実現している究極の展開構造である．本研究成果は，この優れた特性を直接工学に応用し，人間が使うことを可能にするものであり，展開構造だけでなく変形機能を持つ製品や機械のデザインを大きく変えるポテンシャルを持っている．宇宙構造が大型化する中で折り畳みの技術の重要性は増しており，人工衛星用の太陽電池パネルやアンテナ鏡面の折り畳みへの応用が期待される．

Research Products

• [Int'l Joint Research] The University of Oxford/オックスフォード大学自然史博物館(英国)
• [Int'l Joint Research] The University of Oxford(英国)
• [Journal Article] Earwig fan designing: Biomimetic and evolutionary biology applications (2020)
  • Author(s): Kazuya Saito, Ricardo Prez-de la Fuente, Kichi Arimoto, Young ah Seong, Hitoshi Aonuma, Ryuma Niiyama, Zhong You
  • Journal Title: Proceedings of the National Academy of Sciences Volume: 117 Issue: 30 Pages: 17622-17626
  • DOI: 10.1073/pnas.2005769117
  • Peer Reviewed / Open Access
• [Journal Article] Deployable Structures Inspired by Insect Wing Folding (2018)
  • Author(s): Kazuya Saito, Tomohiro Tachi, Taro Fujikawa, Niiyama Ryuma, Yoshihiro Kawahara
  • Journal Title: Origami 7: Proceedings from the seventh meeting of Origami, Science, Mathematics and Education Volume: 3 Pages: 747-762
  • Peer Reviewed
• [Journal Article] The deformation mode and strengthening mechanism of compression in the beetle elytron plate (2017)
  • Author(s): Jinxiang Chen, Xiaoming Zhanga, Yoji Okabe, Kazuya Saito, Zhensheng Guoa, Longcheng Pana
  • Journal Title: Materials & Design Volume: 131 Pages: 481-486
  • DOI: 10.1016/j.matdes.2017.06.014
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Investigation of hindwing folding in ladybird beetles by artificial elytron transplantation and micro computed tomography (2017)
  • Author(s): Kazuya Saito, Shuhei Nomura, Shuhei Yamamoto, Ryuma Niyama, Yoji Okabe
  • Journal Title: Proc. Natl. Acad. Sci. Volume: 114 Issue: 22 Pages: 5624-5628
  • DOI: 10.1073/pnas.1620612114
  • Peer Reviewed / Open Access
• [Journal Article] 折紙の数理と生物模倣に基づく先進構造材料の開発に関する研究 (2017)
  • Author(s): 斉藤一哉
  • Journal Title: 折り紙の科学 Volume: 6 Pages: 32-35
• [Presentation] ハサミムシの扇子の数理 (2020)
  • Author(s): 斉藤一哉
  • Organizer: 1.明治大学研究ブランディング事業，第５回公開シンポジウム「数理科学する明治大学」
  • Invited
• [Presentation] ハサミムシの扇子の設計法 (2020)
  • Author(s): 斉藤一哉
  • Organizer: 明治大MIMS同研究集会「折り紙の科学を基盤とするアート・数理および折紙工学への応用研究」
  • Invited
• [Presentation] Folding Patterns in Insect wings (2019)
  • Author(s): Kazuya Saito
  • Organizer: ART+NATURE SYMPOSIUM, UC Berkeley, 2019.11.10
  • Int'l Joint Research / Invited
• [Presentation] Patterns in Insect Wings (2019)
  • Author(s): Kazuya Saito
  • Organizer: Tokyo-Berkeley Symposium: Forms in Nature and Art
  • Int'l Joint Research / Invited
• [Presentation] Deployable Structures Inspired by Insect Wing Folding (2018)
  • Author(s): Kazuya Saito, Tomohiro Tachi, Taro Fujikawa, Niiyama Ryuma, Yoshihiro Kawahara
  • Organizer: 7th meeting of Origami, Science, Mathematics and Education
  • Int'l Joint Research
• [Presentation] Origami- and Bio-inspired Deployable Structures (2018)
  • Author(s): Kazuya Saito
  • Organizer: Beyond Industry 4.0: Digital Fabrication and Local Craft
  • Int'l Joint Research
• [Presentation] 折紙の幾何学と自然の中の折りたたみ構造 (2018)
  • Author(s): 斉藤一哉
  • Organizer: 日本物理学会 第74回年次大会（2019年）
  • Invited
• [Presentation] Origami robots with flexible printed circuit sheets (2018)
  • Author(s): Lee D., Saito K., Umedachi T., Ta T.D., Kawahara Y.
  • Organizer: UbiComp/ISWC 2018
  • Int'l Joint Research
• [Presentation] Design of a Beetle Inspired Deployable Wing, (2017)
  • Author(s): Kazuya Saito, Tomohiro Tachi, Ryuma Niiyama, Yoshihiro Kawahara
  • Organizer: ASME IDETC/CIE2017, 41th Mechanisms and Robotics Conference
  • Int'l Joint Research
• [Presentation] カブトムシ型展開翼の折線設計法 (2017)
  • Author(s): 斉藤一哉,舘知宏,新山龍馬,川原圭博,岡部洋二
  • Organizer: 第59回構造強度に関する講演会
• [Presentation] 昆虫後翅の折り畳みに基づく可変構造の開発 (2017)
  • Author(s): 斉藤一哉
  • Organizer: 第2回アクティブ・ソフトマター研究会
  • Invited
• [Book] Strange wing folding in a rove beetle, Industrial Biomimetics (eds. A Miyauchi, M Shimomura) (2019)
  • Author(s): Kazuya Saito
  • Total Pages: 16
  • Publisher: Jenny Stanford Publishing
  • ISBN: 9814800074
• [Remarks] 個人ホームページ
  • URL: https://ksaito-tech.wixsite.com/ksaito
• [Remarks]
  • URL: https://www.u-tokyo.ac.jp/ja/utokyo-research/research-news/unfolding-the-folding-mechanism-of-ladybug-wings.html
• [Remarks]
  • URL: https://ksaito-tech.wixsite.com/ksaito
• [Patent(Industrial Property Rights)] 折り曲げ線の設計方法、設計装置、及びプログラム (2020)
  • Inventor(s): 斉藤一哉
  • Industrial Property Rights Holder: 斉藤一哉
  • Industrial Property Rights Type: 特許
  • Filing Date: 2020
• [Funded Workshop] Structural Origami Gathering 2018 (2018)