RESEARCH AND DEVELOPMENT ON ADVANCED GRAPHITE MATERIALS. VOLUME XVII. RADIOGRAPHY OF CARBON AND GRAPHITE.

Abstract

A study was made to establish optimum exposure conditions for the radiographic detection of minimum size defects in thicknesses of graphite varying from four to sixteen inches. Through the use of grids and associated techniques, 0.5 per cent sensitivity or better was attained on high density graphite as follows: 4 in. Graphite -- 0.5 per cent sensitivity on M, single emulsion on M and HD films at 110 KV; 8 in. Graphite -- 0.4 per cent sensitivity on AA film at 150 KV; 12 in. Graphite -- 0.35 per cent sensitivity on HF film with Cobalt-60; 16 in. Graphite -- 0.3 per cent sensitivity on HD film with Cobalt-60. Other parameters and techniques were investigated, such as direct X-ray magnification, screens, films, developers, and position of defect. The use of the grid made the greatest contribution towards an increase in sensitivity. (Author)

Document Details

Document Type
Technical Report
Publication Date
Apr 01, 1964
Accession Number
AD0600339

Entities

People

  • M. R. Rosumny
  • Thomas C. Furnas Jr.

Tags

DTIC Thesaurus Topics

  • Absorbers (Materials)
  • Advanced Materials
  • Detection
  • Emulsions
  • Engineered Materials
  • Graphitic Materials
  • High Density
  • Imaging Techniques
  • Magnification
  • Materials
  • Radiography
  • Sensitivity
  • Thickness
  • X Rays

Fields of Study

  • Physics

Readers

  • Combustion science or combustion engineering.
  • Metallurgy
  • Nanofabrication and Microfabrication.