Effects of CW High Intensity Laser Irradiation on Ceramic Composite Radome Materials

Abstract

Recently developed ceramic composite materials have been subjected to various CW high intensity irradiation and their responses were studied as a function of composition and processing parameters. The addition of high-purity silica, alumino-silicate and alumina fibers to slip-cast fused silica (SCFS) resulted in a moderate increase in flexural strength and elastic modulus but had no effect on the ablation rate. Under CW laser irradiation at 10.6 micrometers and an intensity of 2 kW/square centimeters, the fiber-reinforced fused silica samples failed by melt through with their penetration rates all being approximately 0.15 to 0.25 centimeters per second. The damage area around the laser hole was melted into a glassy phase with the fibers completely dissolved.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 1981
Accession Number
ADA096775

Entities

People

  • Frederick P. Meyer
  • Robert Fitzpatrick
  • Russell E. Whitcher

Organizations

  • United States Army Research Laboratory

Tags

Communities of Interest

  • Advanced Electronics
  • Energy and Power Technologies
  • Space
  • Weapons Technologies

DTIC Thesaurus Topics

  • Ablation
  • Air Flow
  • Air Force
  • Ceramic Fibers
  • Ceramic Matrix Composites
  • Composite Materials
  • Flexural Strength
  • Flow
  • Information Processing
  • Laser Beams
  • Lasers
  • Materials
  • Materials Laboratories
  • Mechanics
  • Military Research
  • Modulus Of Elasticity
  • Optical Materials

Fields of Study

  • Physics

Readers

  • Pulsed Power and Plasma Physics.
  • Reinforced Composite Materials
  • Surface Coatings Technology.

Technology Areas

  • Directed Energy