Thermal Stresses as a Laser Heating Damage Mechanism

Abstract

The relative significance of thermal stresses as a laser heating damage mechanism is assessed by comparison with the damage mechanisms of melting and thermal degradation of structural strength properties. The limiting cases of one-dimensional axial and one-dimensional radial heat flux in a thin target plate whose plane is normal to the axis of a stationary, axially symmetric heat source, are investigated. A one-dimensional radial heat conduction numerical model of the linear thermoelastic stress field including the effects of melting and structural failure is developed. Residual tensile strength and damage size are presented as functions of the laser beam and target plate parameters.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1976
Accession Number
ADA034877

Entities

People

  • Jan N. Garrison

Organizations

  • Air Force Institute of Technology

Tags

Communities of Interest

  • Air Platforms
  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Force
  • Computational Science
  • Computer Programs
  • Elastic Properties
  • Energy
  • Engineering
  • Equations
  • Failure Mode And Effect Analysis
  • Heat Energy
  • Heat Transfer
  • Laser Beams
  • Lasers
  • Mechanics
  • Shear Stresses
  • Tensile Strength
  • Thermal Diffusivity
  • Thermodynamics

Fields of Study

  • Physics

Readers

  • Fluid Dynamics.
  • Mechanical Engineering/Mechanics of Materials.
  • Thermal Physics or Thermal Science.

Technology Areas

  • Directed Energy