Toughening Materials by Exploiting Soft-Hard Combination : From Nacre to Spider Webs

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  • Okumura Ko
    お茶の水女子大学大学院:お茶の水女子大学理学部物理学科

Bibliographic Information

Other Title
  • 天然物質の強靭性:硬・柔の組み合わせの妙―真珠層とクモの巣を例として （解説）
  • 天然物質の強靱性:硬・柔の組み合わせの妙--真珠層とクモの巣を例として
  • テンネン ブッシツ ノ キョウジンセイ コウ ジュウ ノ クミアワセ ノ ミョウ シンジュソウ ト クモ ノ ス オ レイ ト シテ

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Abstract

Tough materials found in nature tend to have characteristic internal structures. For example, nacre which covers the surface of pearl possesses a layered structure composed of soft and hard elements. Nacre is not only beautiful but also strong! We review here a simple view on the toughening mechanism of nacre, together with that of spider webs which are also made up of soft and hard elements, i.e., hard radial threads and soft spiral threads. We begin our discussion with a review on the standard fracture mechanics, putting stress on dimensional analysis.

Journal

  • Butsuri

    Butsuri 66 (2), 97-105, 2011-02-05

    The Physical Society of Japan

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