Experimental and fracture mechanics study of the pit formation mechanism under repeated lubricated rolling-sliding contact

Effects of reversal of rotation and change of the driving roller

Y. Murakami, C. Sakae, K. Ichimaru, Takehiro Morita

Research output: Contribution to journalArticle

27 Citations (Scopus)

Abstract

Five rolling contact fatigue tests, Tests (1)-(5) have been conducted. In Tests (1)-(3), when a fatigue crack was initiated on the surface of a follower, the test was halted. Then, in Test (1) the rotating direction was reversed. In Test (2) the follower and driver were interchanged, and in Test (3) the test was continued unchanged. In Test (3) the original crack grew to a pit. In Tests (1) and (2) the original crack immediately stopped propagating. In Tests (4) and (5), mating with a harder roller, a softer roller was used as the follower in Test (4) and as the driver in Test (5). A typical pit occurred in Test (4). In Test (5), surface damage substantially different from a typical pit was generated. Based on these experimental results, a 3-D crack analysis including the effect offrictional force on the contact surface and oil hydraulic pressure on crack surfaces, was conducted to elucidate the mechanisms of pit formation and surface damage in contact fatigue.

Original languageEnglish
Pages (from-to)788-796
Number of pages9
JournalJournal of Tribology
Volume119
Issue number4
DOIs
Publication statusPublished - Jan 1 1997

Fingerprint

sliding contact
rollers
fracture mechanics
Fracture mechanics
Cracks
Fatigue of materials
cracks
Contacts (fluid mechanics)
Oils
Hydraulics
damage
surface cracks
fatigue tests
hydraulics

All Science Journal Classification (ASJC) codes

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

Cite this

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abstract = "Five rolling contact fatigue tests, Tests (1)-(5) have been conducted. In Tests (1)-(3), when a fatigue crack was initiated on the surface of a follower, the test was halted. Then, in Test (1) the rotating direction was reversed. In Test (2) the follower and driver were interchanged, and in Test (3) the test was continued unchanged. In Test (3) the original crack grew to a pit. In Tests (1) and (2) the original crack immediately stopped propagating. In Tests (4) and (5), mating with a harder roller, a softer roller was used as the follower in Test (4) and as the driver in Test (5). A typical pit occurred in Test (4). In Test (5), surface damage substantially different from a typical pit was generated. Based on these experimental results, a 3-D crack analysis including the effect offrictional force on the contact surface and oil hydraulic pressure on crack surfaces, was conducted to elucidate the mechanisms of pit formation and surface damage in contact fatigue.",
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