An Investigation of Acoustic Emission from Defect Formation in Stainless Steel Weld Coupons

Abstract

Results of an exploratory investigation to determine capabilities and limitations of acoustic emission techniques for detecting weld defects are presented in this report. Acoustic emissions reveal cracks while they form during the welding operation; data indicate that gross porosity can also be detected with this technique. Interference signals, similar to acoustic emissions from bonafide weld defects, can be produced by scale flaking away from the weld surface, by electromagnetic interference, and by impact on the weld material by tools, welding rods, and other metal objects. Suggestions for reducing the effects of interference signals are included in the report.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 1969
Accession Number
ADA377704

Entities

Organizations

  • Battelle Memorial Institute

Tags

Communities of Interest

  • Advanced Electronics
  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Acoustic Emissions
  • Chemistry
  • Data Analysis
  • Electrical Equipment
  • Electrodes
  • Frequency
  • Instrumentation
  • Magnetic Tape
  • Materials
  • Nondestructive Testing
  • Porosity
  • Stainless Steel
  • Steel
  • Tapes
  • Transducers
  • Waves
  • Welding Rods

Fields of Study

  • Materials science

Readers

  • Metallurgy
  • Structural Health Monitoring of Composite Structures.