My primary research interest is to understand the relationships between a material's structure and composition and properties related to environmental degradation. The properties of focused interest and activity are those associated with hydrogen embrittlement, stress corrosion cracking, localized corrosion, and passivity of materials. My historical current focus is on advanced aluminum, magnesium, titanium, ferrous and nickel-based alloys, as well as stainless steels and aluminum-based intermetallic compounds.