Abstract
The elastic modulus of the grinding stone part in super abrasive grinding wheels is considered to be an important mechanical property to estimate the grinding performance of the wheels, to select the suitable grinding wheel case by case. This paper describes the approximate formula of elastic modulus on the matrix type grinding stone without pore. This formula is obtained from the acoustic model based on the propagation of the elastic wave. The elastic modulus of the grinding stone can be conveniently calculated by the formula, if the mechanical property of grain and bond, and the composition of the grinding stone have been known. The elastic modulus measured by bending test and ultrasonic pulse method are compared with the calculated results in order to evaluate the accuracy of the formula. As a result of the comparison, it is confirmed that both of the measured elastic modulus of the grinding stone coincide with the calculated results, and there are the suitability of the formula and the acoustic model.
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