Material Properties Measurements Using Pulsed Electron Beams
PHYSICS INTERNATIONAL CO SAN LEANDRO CA
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A technique was developed for measuring the elevated-temperature tensile properties of materials following instantaneous in-depth heating. High-energy pulsed electron beams are used to heat specimens to the required temperature in approximately 0.08 microsec, and a Hopkinson bar-type device, in a tensile configuration, is used to perform the mechanical tests at any desired time after irradiation. Data on the temperature-induced degradation of the Youngs Modulus and the yield stress of 2014-T6 aluminum and commercially pure alpha titanium was obtained. The data extend up to approximately 700 F for three different times at temperature 0.2 msec, 1.0 msec and 10 msec. The results indicate that the Youngs Modulus at ambient pressure appears to be a function of temperature only. The degradation of the yield strength is time- and temperature-dependent but not as severe as that shown by the long-heating-time and book data.
- Test Facilities, Equipment and Methods