低温下での氷の付着強度に関する研究

抄録

Icing is one of important problems that has to be prevented in jet engine of airplane. If thin ice layer deposited on the surface of blade is detached in fight, the debris is scattered and then impacts to a rear stage blade. Such impact of the debris could bring about catastrophic fracture of the blades. Numerical simulation is a powerful tool to understand how the icing is grown and detached. Thus, the icing phenomenon has been focused on the stand point of fluid mechanics. However, the knowledge for mechanical property of ice itself and the adhesion of the ice layer was still very poor. The aim of this study is to examine about the mechanical property including Young's modulus and fracture toughness and adhesive strength at a low temperature. As a result, it was found that the mechanical property and adhesive strength are strongly affected by testing temperature and loading speed.