Scaling of Cavitation Damage.

Abstract

This investigation has focused on the initial stages of cavitation erosion using a ductile material in a flowing system employing water as the working fluid. The test models were 0.635 cm diameter zero-caliber ogives made of pure annealed aluminum. The aluminum was selected as a material which would be suitable for recording the intensity of cavitation bubble collapse. The damage in the initial stages was in the form of small indentations in the model surface. The greatest damage was within an area corresponding to the cavity closure point on the model. The pits were round depressions usually under 0.1 mm in diameter, with the majority less than 0.05 mm across. During the formation of these pits, it appears that no material was removed from the surface. Using the pure annealed aluminum test probe, a sufficient damage sample could be generated in a relatively short period of time.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Feb 17, 1976
Accession Number
ADA049766

Entities

People

  • David R. Stinebring

Organizations

  • Pennsylvania State University

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Cameras
  • Collapse
  • Dynamic Pressure
  • Electron Microscopes
  • Engineering
  • Geometry
  • Materials
  • Measurement
  • Mechanical Engineering
  • Navy
  • Oxide Films
  • Photographs
  • Photography
  • Plastic Explosives
  • Scanning Electron Microscopes
  • Test Facilities
  • Water Tunnels

Fields of Study

  • Physics

Readers

  • Marine Propulsion Engineering and Naval Architecture
  • Materials Science (Mechanical Engineering).
  • Materials Science and Engineering.