Analytical Modeling of Subsonic Particle Erosion

Abstract

An analytical approach to particle erosion of solid surfaces is developed based on a model of erosion pit nucleation and growth. The Hertzian theory of impact is used to introduce the kinematic and material parameters into this general statistical formulation of erosion processes. In order to minimize the number of unknown factors in the initial development of a predictive erosion theory, the particular case of solid spherical particles impacting directly on the plane surface of an elastic half-space is investigated. Erosion tests were conducted on the AFML-Bell erosion apparatus in conjunction with the modeling studies. The erosion mechanisms in fused silica was identified when eroded by multiple impacts of spherical glass beads.

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Document Details

Document Type
Technical Report
Publication Date
Jul 01, 1972
Accession Number
AD0752221

Entities

People

  • George T. Sha
  • William F. Adler

Organizations

  • Bell Aircraft Corporation

Tags

Communities of Interest

  • Energy and Power Technologies
  • Space

DTIC Thesaurus Topics

  • Air Force
  • Air Force Facilities
  • Body Weight
  • Boundaries
  • Bulk Materials
  • Computer Programs
  • Computers
  • Materials
  • Materials Laboratories
  • Mechanical Properties
  • Mechanics
  • New York
  • Optical Materials
  • Particle Size
  • Stress Waves
  • Stresses
  • Tensile Stress

Readers

  • Aerosol Science/Aerosol Physics
  • Structural Health Monitoring of Composite Structures.
  • Surface Coatings Technology.

Technology Areas

  • Space
  • Space - Hall-Effect Thruster