研削砥石の動弾性係数
研削砥石の結合度測定に関する研究(第2報)
1970 年 36 巻 428 号 p. 608-614
詳細
1970 年 36 巻 428 号 p. 608-614
In this paper, the relation between the dynamic elastic modulus measured by ultrasonic pulse method and the grade of the grinding wheel is discussed.
The results obtained are as follows:
1. The grade of the grinding wheel can be determined by the dynamic elastic modulus.
2. The dynamic elastic modulus obtained experimentally has correlations not only with the percentage of the grain and the bond, but also with the bending strength of the grinding wheel.
3. By ultrasonic pulse method, it is not necessary to rectify the type and the shape of the grinding wheel, thus, this method is more convienient than sonic resonance frequency method, and the dynamic elastic modulus of it is easily calculated with the den sity and the ultrasonic velocity of the grinding wheel.
4. The dynamic elastic modulus has relation to the bitten-depth measured by bit-method, and there is no restriction of the grain size upon appiying this method to the grade determination.
