Dynamic Tensile Behavior Of Granular Ice Using The Spalling Test Technique
Résumé
The behavior of granular ice has been widely investigated during the last decades. Nevertheless, the characterization of the mechanical response of ice subjected to dynamic loading still suffers from a lack of experimental observation. Dynamic experiments have already been conducted in compression mode using Kolsky bar setup. Regarding tension, the literature gives only approximated strength values and experimental observations and measurements cannot be found. This knowledge is essential to design structures that may experience ice impact. In this framework, this study aims at providing data of the maximal strength of granular ice subjected to dynamic tensile loading. The spalling test technique has been used and tensile loading has been applied at strain rates from 30 to 145 /s. The experimental results show that there is a strain rate dependence of the maximal strength of ice, evolving from 3 MPa to 15.4 MPa, respectively from 30 to 145 /s.