The Effects of Repeated Compressive or Tensile Load on the Mechanical Properties of Rock (2nd Report)

In this second report, the change of velocity of sonic wave (P-wave) in the same specimen subjected to pulsating compressive or tensile stress is investigated in detail and wide range.The distinct change of P-wave velocity in the loading direction, in unstressed condition, is not observed after applying pulsating tensile load. When pulsating compressive load is applied, the velocity in Sanjomeandesite decreases by 20%, the velocity in sandy-tuff...