G1101-1-3 Relationship between Vickers hardness and elastic at recovery ratio for ice at liquid nitrogen

Abstract

The mechanical strength of ices, especially for the glacier has been studying since 19th century. However, there are few industrial applications such as mechanical processing tools without ice-blast. Because the specific data of mechanical properties for ices which are produced by the conventional refrigerator are unknown. Therefore, we produced three types of ices using a Stirling refrigerator with controlling the cooling rate, and measured the hardness of ices from 77 K to 268 K. Furthermore, indentation displacements were also measured during the hardness test, so that the Elastic Recovery Ratios of ices were investigated in this study.