Effect of hammer weight on the impact strength of strengthened porcelain

Abstract

The impact strength of ten kinds of strengthened porcelain bowls and plates was evaluated using hammers with three different weights based on JIS S 2402. A strain waveform developed upon impact was measured by a strain gauge adhered to the inside surface on the samples. The impact strength of the plate-type samples was higher than that of the bowl-type samples. The larger samples had higher impact strength. In the case of impact test for larger samples, the impact strength decreased with increasing in the weight of hammer. These behaviors were discussed on the basis of the variations of strain waveform.