A novel evaluation method for interfacial adhesion strength in ductile dissimilar materials

Shoji Kamiya, Harunori Furuta, Masaki Omiya, Hiroshi Shimomura

研究成果: Article査読

9 被引用数 (Scopus)

抄録

The energy of interface adhesion between two elastic-plastic materials was directly evaluated as the mechanical work supplied exclusively to separate the interface. Interface crack extension was simulated by elastic plastic finite element models, where the nodes along the interface in the vicinity of crack tip were divided into two nodes and the nodal forces were gradually decreased to zero. While further plastic deformation takes place in the volume of materials during crack extension, the work done by these nodal forces against mutual displacement of crack surfaces should be consumed on the surfaces and thus equals to the interface adhesion energy. This technique was applied to a copper/polyimide system for flexible printed circuits in accordance with the new experimental results. In comparison to the results obtained by the conventional peel test, this technique yielded far smaller amount of interface energy successfully excluding the energy dissipated with bulk plastic deformation without any insertion of cohesive strip along the interface in the model.

本文言語English
ページ(範囲)5007-5017
ページ数11
ジャーナルEngineering Fracture Mechanics
75
18
DOI
出版ステータスPublished - 2008 12月

ASJC Scopus subject areas

  • 材料科学(全般)
  • 材料力学
  • 機械工学

フィンガープリント

「A novel evaluation method for interfacial adhesion strength in ductile dissimilar materials」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル