Fretting fatigue properties and detection of crack initiation of inconel alloy

Takao Utsunomiya, K. Sugimoto, C. Makabe, K. Iida

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Plain and freeting fatigue tests of inconel alloy NCF690 were carried out under tension-compression axial loading. In the fretting fatigue test, the contact pad of stainless steel SUS405 was clamped and the pressure of the contact pads was changed from 60 to 200MPa. The fatigue strength in fretting fatigue substantially reduced comparing with that of the plain fatigue and fundamentally decreased with the increase of the contact pressure, but did not change in the region that the contact pressure was higher than 150MPa. The friction force amplitude and the relative slip amplitude increased with the increase of the stress amplitude. However, the friction force amplitude became almost constant in the region that the stress amplitude was high, when the contact pressure was equal to 60MPa. After that, measuring the strain information in the neighborhood of the contact surface of specimen and pad, the applicability of the strain interference method to the detection of the crack initiation in fretting fatigue w as investigated. It was shown that the crack initiation life at which the crack length reached about 0.5mm could be detected by the strain interference method.

Original languageEnglish
Pages (from-to)758-763
Number of pages6
JournalZairyo/Journal of the Society of Materials Science, Japan
Volume50
Issue number7
Publication statusPublished - 2001 Jul

Fingerprint

fretting
Inconel (trademark)
crack initiation
Crack initiation
Fatigue of materials
fatigue tests
plains
friction
Friction
interference
Axial compression
Stainless Steel
stainless steels
slip
Stainless steel
cracks
Cracks

Keywords

  • Contact pressure
  • Crack initiation
  • Fatigue strength
  • Fretting fatigue
  • Friction force
  • Inconel alloy
  • Relative slip amplitude
  • Strain interference method

ASJC Scopus subject areas

  • Chemical Engineering (miscellaneous)
  • Metals and Alloys
  • Polymers and Plastics

Cite this

Fretting fatigue properties and detection of crack initiation of inconel alloy. / Utsunomiya, Takao; Sugimoto, K.; Makabe, C.; Iida, K.

In: Zairyo/Journal of the Society of Materials Science, Japan, Vol. 50, No. 7, 07.2001, p. 758-763.

Research output: Contribution to journalArticle

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AB - Plain and freeting fatigue tests of inconel alloy NCF690 were carried out under tension-compression axial loading. In the fretting fatigue test, the contact pad of stainless steel SUS405 was clamped and the pressure of the contact pads was changed from 60 to 200MPa. The fatigue strength in fretting fatigue substantially reduced comparing with that of the plain fatigue and fundamentally decreased with the increase of the contact pressure, but did not change in the region that the contact pressure was higher than 150MPa. The friction force amplitude and the relative slip amplitude increased with the increase of the stress amplitude. However, the friction force amplitude became almost constant in the region that the stress amplitude was high, when the contact pressure was equal to 60MPa. After that, measuring the strain information in the neighborhood of the contact surface of specimen and pad, the applicability of the strain interference method to the detection of the crack initiation in fretting fatigue w as investigated. It was shown that the crack initiation life at which the crack length reached about 0.5mm could be detected by the strain interference method.

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