The Strength of Kevlar Rope Terminated by Metal Socket Joints

Hiromi Hiyama, Yoji Koga, Wen Xue Wang, Yoshihiro Takao

Research output: Contribution to journalArticlepeer-review


A terminal of Kevlar rope with a metal socket was loaded statically and repeatedly to assess the effect of high water pressure. The experimental results show that the water pressure increased both the static and fatigue strengths of the terminal. An analytical simulation of this terminal was also performed using the finite element method, where contact pressure, friction and slip process were taken into account. The detailed stress distribution and concentration were estimated along the interface between the rope and tapered socket It was found that there are two stress concentrations on the Kevlar rod surface. One is at a concave being made in the forming process and another is at a contact point between the rod and socket. When the water pressure is low enough to keep the rod-slip out of the socket within a small quantity, two stress concentrations yield a single peak near the socket edge. High water pressure decreases the stress concentration factor at a contact point, which explains the present experimental result.

Original languageEnglish
Pages (from-to)244-249
Number of pages6
JournalJournal of the Society of Materials Science, Japan
Issue number474
Publication statusPublished - 1993

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering


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