An Ultrasonic Pulse-Height Difference Method of Recording Crack Growth over an Extended Period.

Abstract

A method for recording slow crack growth, using a conventional ultrasonic tester and chart recorder, is described. The problems caused by changes in the measuring system over long periods were overcome by relating crack growth to the amplitude difference between the crack reflection and a reference reflection. Some applications of the technique are described. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 1977
Accession Number
ADA056261

Entities

People

  • A. J. Farrell
  • W. J. Pollock

Tags

Communities of Interest

  • Air Platforms
  • Space

DTIC Thesaurus Topics

  • Aeronautical Engineering
  • Aeronautics
  • Aircrafts
  • Amplitude
  • Civil Aviation
  • Commercial Aviation
  • Engineering
  • Fluid Dynamics
  • Heat Treatment
  • Intensity
  • Materials
  • Measurement
  • Physics Laboratories
  • Recording Systems
  • Reflection
  • Stress Corrosion
  • Stress Corrosion Cracking

Fields of Study

  • Physics

Readers

  • Atmospheric Science / Meteorology, specifically Wind Wave Turbulence.
  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Materials Science (Mechanical Engineering).