Effects of Porosity of Dry and Saturated Sandstone on the Energy Dissipation of Stress Wave

A SHPB experiment of porous sandstone was conducted to discuss the influencing principle of porosity on the energy dissipation of stress wave across dry and saturated porous sandstones. Changes in porosity before and after the SHPB experiment were analyzed by nuclear magnetic resonance. Results show that the number of wave peaks in the T 2 spectrum before and after the impact test of sandstone is unchanged, but the wave peak value corresponding...