Study of Surface Fatigue Wear by Exoelectron Emission.

Abstract

An investigation of surface fatigue wear of bearing balls was carried out, using exoelectrons to monitor crack growth prior to spalling. The balls were run in a Barwell 4-ball surface fatigue wear tester, and periodically removed from the tester, cleaned to remove their oil film, transferred to a special vacuum chamber, and illuminated with ultraviolet light. The emitted exoelectrons originating at new surface area generated during fatigue testing were detected by an electron multiplier. By rotating the ball and measuring the exoelectron emission as a function of position, the sources of the emission could be localized to within the resolution of the scanning spot, 0.08 mm.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Dec 30, 1977
Accession Number
ADA049927

Entities

People

  • Donald M. Boyd
  • Ernest Rabinowicz

Organizations

  • Massachusetts Institute of Technology

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Ball Bearings
  • Chemistry
  • Crystal Structure
  • Detection
  • Electron Emission
  • Electron Multipliers
  • Electrons
  • Emission
  • Equations
  • Fatigue Tests (Mechanics)
  • Friction
  • Heat Of Activation
  • Iron
  • Leading Edges
  • Materials
  • Mechanical Engineering
  • Ultraviolet Radiation

Readers

  • Combustion Dynamics and Shock Wave Physics.
  • Spectroscopy.
  • Tribology (the study of the boundary interaction between sliding surfaces, lubrication, wear and friction).

Technology Areas

  • Microelectronics
  • Microelectronics - Graphene