Abstract
From a perspective of materials for the grinding machine, it is important to clarify not only the static mechanical properties but also the impact mechanical properties. In the present study, the impact compressive properties of the abrasive material for grinding were investigated. Quasi-static testing was carried out at strain rates of 8.3×10^<-5> to 8.3×10^<-3> s-1. The impact compressive testing was preformed by mean of split Hopkinson pressure bar method. The strain rate of the impact test was approximately 10^2 s^<-1>. In comparison with the quasi-static (QS) test, the increase in fracture stress with increasing strain rate did not occur in the impact test. This was caused by the strain rate dependency of strength for the vitrified bonds.
