New Techniques in Nondestructive Testing by Acoustical and Exo-electron Emission.

Abstract

The report describes investigations of the frequency distribution of acoustical emission from growing fatigue cracks in 24-ST aluminum sheet. The fatigue cracks were introduced by a high-amplitude, low-cycle bending mode of deformation. Efforts were also devoted to investigating the post fatigue exo- electron emission from nickel wires.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Apr 30, 1970
Accession Number
AD0720358

Entities

People

  • Robert H. Chambers
  • Stuart A. Hoenig

Organizations

  • University of Arizona

Tags

DTIC Thesaurus Topics

  • Amplitude
  • Analyzers
  • Bandwidth
  • Contracts
  • Electrical Engineering
  • Electron Emission
  • Electrons
  • Emission
  • Engineering
  • Frequency
  • Nondestructive Testing
  • Photoexcitation
  • Pulse Amplitude
  • Spectra
  • Spectrum Analyzers
  • Time Domain

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Materials Science (Mechanical Engineering).
  • Metallurgy

Technology Areas

  • Microelectronics