When X-rays penetrate a substance opaque to visible light they are partly transmitted, partly absorbed, and partly reflected or scattered, the amount of each depends on the substance and its thickness. Substances of high density and atomic weight usually absorb X-rays to a much greater extent than those of light weight, for the latter tend to scatter the rays rather than absorb them. An outline arrangement for taking a radiograph is shown. In welds, unsoundness of the weld metal, imperfect penetration of the weld head and cracks in both bead and parent plate may be sought for. In castings, any such defects as porosity, draws and hot tears are likely to be revealed. Radiographs are shown of various welded and cast specimens.

  • Corporate Authors:

    Temple Press Limited

    161-166 Fleet Street
    Longon EC4,   England 
  • Authors:
    • Knights, E D
  • Publication Date: 1942-10-9

Media Info

  • Features: Figures; Photos;
  • Pagination: p. 348-50
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00037879
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jul 8 1994 12:00AM