Dr. Erbay joined SGH in 2004. He is a member of SGH’s Engineering Mechanics and Infrastructure group. He is experienced in linear and nonlinear structural analysis of wide range of systems, including composite structures, towers, pipelines, liquid storage tanks, and pressure vessels. He is also actively working on developing SGH’s internal knowledge and experience on analysis and design of medium- to large-scale wind turbines. He was one of the key engineers who performed the nonlinear structural collapse analysis of World Trade Center Towers 1 and 2 and World Trade Center Building 7 as part of the investigation by National Institute of Standards and Technology.