Dynamic Fracture Toughness Measurement.

Abstract

Combined tensile-impact tests have been performed. It was found that a wide range of crack velocity was encompassed and the detailed crack acceleration behavior was unpre-dictable. An improved crack-velocity monitoring procedure for single-shot oscilloscope work has been devised that gives an extended record time at fast sweep rates. This was accomplished by using the signal to modulate the radius of a circular time base and the trigger to intensify a pre-blanked trace. Calibration procedures utilising the self-resistance of the cracking specimen to monitor crack growth have been completed and a recording system has been developed to monitor pretrigger and post trigger crack velocity data. (Author, modified-PL)

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 1974
Accession Number
AD0784670

Entities

People

  • B. K. Denton
  • J. Congleton

Organizations

  • Newcastle University

Tags

DTIC Thesaurus Topics

  • Calibration
  • Impact Tests
  • Measurement
  • Mechanical Properties
  • Monitoring
  • Motion
  • Oscilloscopes
  • Physical Properties
  • Recording Systems
  • Resistance
  • Toughness
  • Wear Resistance

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.
  • Materials Science (Mechanical Engineering).
  • Systems Analysis and Design