Technology to enhance his studies in applied mechanics. Academic career Doyoyo collaborated with researchers in the Joint MIT-Industry Consortium on Ultralight Metal Body Structures, the Cambridge-MIT Institute, and the Next Generation Vehicles Initiative. He performed experiments at the impact and crashworthiness laboratory on cellular solids including metallic foams and honeycombs. The challenge was to come up with new experimental techniques, specimens, and devices to test soft solids under extreme multidimensional crash loads, to simulate a typical collision event. He developed a trapezoid-shaped specimen to deduce the local stress-strain relation for metal foams to be incorporated into finite element analysis (FEA) codes. For the constitutive equation and crash failure surfaces, he developed a butterfly-shaped specimen, and modified the Arcan apparatus, deriving equations for determining shear and compressive or tensile stresses in the test section of the specimen. Due to the difficulty of handling the butterfly-shaped specimen, he developed a Universal Biaxial Testing Device with an altered specimen geometry. He left MIT in 2004 to lecture at the school of civil and environmental engineering at the Georgia Institute of Technology (Georgia Tech). He created the ultralight systems laboratory that was dedicated to experimental research on ultralight materials. Applying the foundation and plate theories of structural mechanics, he proved that as an internal reinforcing element, a truss lattice structure has the ability to reduce the weight of a pressure vessel by decreasing its skin thickness while improving its fracture strength. This led to the invention disclosure of microtruss pressure vessels. These pressure vessels accommodate non-round shapes resulting in increased safety, driving range, and cabin space for hydrogen vehicles. In an effort to develop energy storage systems for large-scale traditional and renewable energy sources, he began research collaboration with electricity generation companies. As one of the results of this collaboration, he developed Cenocell, a patented concrete-like material that is based on fly ash without the addition of Portland cement. Fly ash is a pollutant byproduct of coal-fired power plants, cement production, paper manufacturing, and mining operations. Cenocell microstructure resembles that of a natural gas reservoir rock. As of 2006, he became interested in doing research aligning with his homeland's Reconstruction and Development Programme (RDP) He started work with his graduate students on green building and renewable energy. Between 2007 and 2009, he was appointed as a professor extraordinare and later a visiting research and innovation chair at the Tshwane University of Technology. This afforded