THE EFFECT OF METAL PROPERTIES ON HYPERVELOCITY PENETRATION.

Abstract

A calorimeter was designed and built in order to measure the heat evolved in the tensile deformation of metals. This piece of equipment was designed to be used in conjunction with an Instron testing machine and standard 0.505 in. tensile specimens of annealed 2 S Aluminum. The calorimeter operates on the following principle. When a mixture of ice and water at 32 F absorbs heat, the temperature remains constant and a portion of the ice melts. The mass which melts is directly proportional to the quantity of heat absorbed; the constant of proportionality is the reciprocal of the latent heat of fusion. To measure the mass of ice which melts we need only to monitor the volume change which occurs in the transition of ice of water. To determine this volume change, we need to measure the height of a column of water which is allowed to communicate with the ice water jacket of the calorimeter.

Document Details

Document Type
Technical Report
Publication Date
Sep 30, 1965
Accession Number
AD0484470

Entities

People

  • Robert E. Green Jr.

Organizations

  • Johns Hopkins University

Tags

DTIC Thesaurus Topics

  • Aluminum
  • Calorimeters
  • Communication Equipment
  • Energy
  • Heat Energy
  • Heat Of Fusion
  • Latent Heat
  • Metals
  • Physical Properties
  • Standard Enthalpy Changes
  • Standards
  • Thermodynamic Properties
  • Transitions

Readers

  • Materials Science (Mechanical Engineering).
  • Thermal Physics or Thermal Science.
  • ballistics.

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flow