On Shore Hardness Tester (Scleroscope) of Type D : Motion of Hammer

Abstract

This research concerns the investigation on the behaviour of the hammer in the scleroscope of type D before it is clamped with the ball clutch the effect of the changeable action of the clutch on the rebound of the hammer and the hardness values measured. Then we compared the hardness values indicated on the hardness dial of the scleroscope with the hardness values which were calculated with the height of rebound of the hammer measured by the optical method. We also discussed the relation between the height of rebound of the hammer and the shape of its diamond tip.