MECHANICAL PROPERTIES OF METALS AND THEIR CAVITATION DAMAGE RESISTANCE

Abstract

Detailed investigations with a magnetostriction apparatus were carried out to determine the cavitation damage resistance of eleven metals in distilled water at 80 deg F. The cavitation damage resistance is defined as the reciprocal of the rate of volume loss for a given metal. Among the mechanical properties investigated (ultimate tensile strength, yield strength, ultimate elongation, Brinell hardness, modulus of elasticity and strain-energy), the most significant property which characterizes the energy absorbing capacity of the metals, under the repeated, indenting loads due to the energy of cavitation bubble collapse in the steady state zone, was found to be the fracture strain energy of the metals. The strain energy is defined as the area of the stress-strain diagram up to fracture. The correlation between the strain energy and the reciprocal of the rate of volume loss leads directly to the estimation of the intensity of cavitation damage; this intensity varies as the square of the displacement amplitude of the specimen. All these conclusions are limited to the steady state zone of damage.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1964
Accession Number
AD0606050

Entities

People

  • A. Thiruvengadam
  • Sophia Waring

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Aluminum
  • Bronze
  • Elastic Properties
  • Engineering
  • Engineers
  • Fluid Mechanics
  • Hardness
  • Mechanical Properties
  • Mechanics
  • Military Research
  • Modulus Of Elasticity
  • Naval Architecture
  • Physics Laboratories
  • Research Facilities
  • Tensile Strength
  • Test Methods
  • Yield Strength

Fields of Study

  • Engineering

Readers

  • Combustion and Flow Dynamics.
  • Mechanical Engineering/Mechanics of Materials.
  • Structural Health Monitoring of Composite Structures.