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用超声波脉冲穿透法测定的动弹性系数与砂轮的组成有密切的关系,砂轮的组成与动弹性系数的关系用松野的公式.大体上是可以说明的。动弹性系数与砂轮的抗折强度有密切的关系,而抗折强度与实际采用的方法测定出的硬度是互相关联着的。动弹性系数与锥头的压入深度也是有关系的。因此,动弹性系数与用普通方法测定出的硬度是容易对应的,用于实
The dynamic elastic coefficient measured by the ultrasonic pulse penetrating method is closely related to the composition of the grinding wheel, and the relationship between the composition of the grinding wheel and the dynamic elastic coefficient is given by the formula of Matsuno. In general, it can be explained. The dynamic elastic coefficient is closely related to the flexural strength of the grinding wheel, while the flexural strength is related to the hardness measured by the actual method. The dynamic elasticity coefficient is also related to the penetration depth of the cone head. Therefore, the dynamic elastic coefficient and the hardness measured by the ordinary method is easy to correspond to the real