形状記憶ＴｉＮｉ埋め込みファイバの収縮効果を利用した複合材料のき裂閉鎖作用

• 島本 聡

• 田谷 稔

書誌事項

タイトル別名

• Reduction in K1 by Shape Memory Effect in a TiNi Shape-Memory fiber-Reinforced Epoxy Matrix Composite.
• ケイジョウ キオク TiNi ウメコミ ファイバ ノ シュウシュク コウカ オ

抄録

As TiNi shape-memory fiber-reinforced epoxy matrix composite with given prestrain ε_r in TiNi fiber at room temperature is subjected to temperature increase so as to exceed austenitic finish temperature (A_f), the TiNi fiber shrinks to its original length by ε_r resulting in compressive stress in the epoxy matrix. This compressive stress in the matrix was utilized to reduce K₁ of a sidenotched TiNi/epoxy composite, which was confirmed by the present experiment with two types of temperature control : Joule heating by passing an electric current through TiNi fibers and subjecting the composite to a constant temperature using an iso temperature furnace. An analytical model baged on Eshelby's model is developed in order to compute the averaged matrix compressive stress which is then coupled with Tada's formula for computing ΔK₁. The experimental trend that |ΔK₁|increases with prestrain ε_r was in good agreement with the predictions based on the present model.

収録刊行物

• 日本機械学会論文集Ａ編

  日本機械学会論文集Ａ編 63 (605), 26-31, 1997

  一般社団法人 日本機械学会

キーワード

• Shape-Memory Alloy
• Prestrain
• Smart Composites
• Eshelby's Model
• Stress Intensity Factor
• Notch
• Crack Closure
• Photoelasticity
• Phase Transformation

詳細情報

• CRID: 1390001204447188480
• NII論文ID: 110002373979
• NII論文ID: 10009530346
• NII書誌ID: AN0018742X
• DOI: 10.1299/kikaia.63.26
• COI: 1:CAS:528:DyaK2sXhsl2itLg%3D
• ISSN: 18848338
• ISSN: 03875008
• ISSN: http://id.crossref.org/issn/00290270
• NDL書誌ID: 4127062
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4127062
• Web Site: http://www.jstage.jst.go.jp/article/kikaia1979/63/605/63_605_26/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可