Supersonic Measurement of Wall Thickness in Diesel Liners

Abstract

This report describes studies that have been made at the Naval Research Laboratory aired at modifying the Sonigage so that it can be used to inspect thick materials with curved surfaces. Its application to the measurement of wall thickness in diesel cylinder liners is discussed in detail. The report includes also a brief description of the Sonigage together with its theory of operation, and describes the results of measurements on 19 diesel cylinder liners at the Norfolk Naval Shipyard. Evidence of core-shifting was found in many cases. In two instances, core-shifting was so bad that the test indicated that the castings should be discarded. In two other instances, the wall thickness had been reduced to the one-quarter inch minimum allowable.

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Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1946
Accession Number
AD1199218

Entities

People

  • F. W. Struthers

Organizations

  • United States Naval Research Laboratory

Tags

DTIC Thesaurus Topics

  • Buildings And Structures
  • Materials
  • Materials Laboratories
  • Measurement
  • Military Research
  • Platforms
  • Research Facilities
  • Shipyards
  • Thickness

Readers

  • Combustion and Flow Dynamics.
  • Educational Psychology
  • Metallurgy

Technology Areas

  • Hypersonics
  • Hypersonics - Hypersonic Flow