Department of Mechanical Engineering, Faculty of Engineering
Department of Mechanical Engineering, Graduate School of Engineering
Department of Mechanical and Aerospace Engineering, Mechanical Engineering Course, School of Engineering
Use of hydrogen as an alternative energy has been attracting attention from the standpoint of global environmental concerns. Hydrogen generation, storage and transportation are required to build up the entire system. Most metals and their alloys are susceptible to hydrogen, which easily penetrates the metallic materials and degrades the strength characteristics. This is termed as so-called "hydrogen embrittlement". To ensure both the safety and economy of hydrogen energy systems, we have been investigating the basic mechanism for hydrogen embrittlement of metallic materials. We have been also working on strengthening of metallic materials which contributes to higher safety and efficiency of automobile and airplane.
Investigation to determine the cause of the hydrogen leakage in the hydrogen station in "Ai-chikyu-haku". - Fatigue fracture of dispenser hose - (a) Hydrogen station, (b) Numerical analysis of part in hydrogen leakage.