Fretting fatigue on thread root of premium threaded connections

Yosuke Oku, Masaaki Sugino, Yoshinori Ando, Taizo Makino, Ryosuke Komoda, Daisuke Takazaki, Masanobu Kubota

Research output: Contribution to journalArticle

13 Citations (Scopus)


Identification of the fatigue failure mode of the premium threaded connection for Oil Country Tubular Goods pipes was conducted via full-scale fatigue tests. A through-wall crack was found at the imperfect thread root of the male embodiment, but the crack initiation site depended on the stress level. At relatively higher stress amplitude region, the crack originated from the thread rounded corner by stress concentration. At relatively lower stress amplitude region, the crack originated at the middle of the thread root because of fretting fatigue. To investigate the fretting fatigue mechanism in the threaded connection, a fundamental fretting fatigue test was conducted. This test achieved the fretting fatigue failure at the middle of the contact surface under large gross slip condition.

Original languageEnglish
Pages (from-to)111-120
Number of pages10
JournalTribology International
Publication statusPublished - 2017

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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