Measurement of the Hugoniot curve of Ti-6Al-4V with commercial manganin gauges

The Hugoniot curve of Ti-6Al-4V was determined in the 0-140 kbar range using calibrated commercial manganin gauges. A two-wave structure was found in all shots corresponding to the elasto-plastic behaviour with a precursor amplitude of about 21 kbar. The Hugoniot curve in the stress-particle velocity curve shows a break around 100 kbar which can be attributed to a dynamic phase transformation. Although no wave splitting phenomena were observed at this stress, the oscilloscope records of the gauges' response shows features which can be attributed to the assumed transformation.