A STUDY OF THE APPLICABILITY OF ACOUSTIC EMISSION TO PRESSURE VESSEL TESTING

Abstract

This report describes a series of experiments designed to assess the practical capability of acoustic emission to indicate stress and/or deformation in a structure, as well as to offer a means of assessing structural integrity. The tests were conducted on split ring samples and specimens of cylindrical form internally pressurized. The integrity of the cylindrical vessels was altered by inserting machined notches of various shapes at predetermined locations on the vessel surface. Specimens were fabricated from 4130 steel and 6061 aluminum. The studies were extended to tests in which the surface of the specimens was coated with a brittle film. This was done to provide an artificial source of high acoustic energy which conceivably could offer an alternate method comparable in reliability with the metal induced emission and one which would be much less susceptible to the environmental disturbances.

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Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1966
Accession Number
AD0809369

Entities

People

  • B. H. Schofield

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Emissions
  • Air Force
  • Aluminum
  • Emission
  • Geometric Forms
  • Geometry
  • Governments
  • Internal Pressure
  • Materials
  • Materials Laboratories
  • Measurement
  • Metals
  • Piezoelectric Transducers
  • Pressure Vessels
  • Strain Gages
  • Structural Integrity
  • Transducers

Readers

  • Electrical Engineering
  • Structural Health Monitoring of Composite Structures.
  • Systems Analysis and Design