Dynamic Fracture Toughness Measurement.
Final technical rept. May 73-Apr 74,
NEWCASTLE-UPON-TYNE UNIV (ENGLAND) DEPT OF METALLURGY AND ENGINEERING MATERIALS
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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
- Ceramics, Refractories and Glass
- Metallurgy and Metallography