Cities and towns all across the globe are reeling from a spate of hurricanes, earthquakes, and typhoons. Human safety is the most immediate concern. But damage assessment is important too.Quickly following a natural disaster, it’s critical to evaluate the health and strength of a city’s infrastructure. Failure to do so can have catastrophic consequences. For example, it wasn’t the earthquake in Fukushima, Japan, that inflicted most of the devastating destruction. And it wasn’t the tsunami that followed.“The greatest damage occurred when reactors blew up because of the hydrogen explosions,” said Taskin Padir, associate professor of electrical and computer engineering at Northeastern.Taskin Padir and his student Nicolas Binford work on a hexi-copter drone. Padir’s lab is developing aerial robots for damage detection after disasters. Photo by Adam Glanzman/Northeastern UniversityPadir is working with faculty colleagues Jerome Hajjar, professor and chair of civil and environmental engineering, and Peter Boynton, professor of practice of social science and humanities, to build automated aerial robots to detect infrastructure damage after extreme events. The goal of the project, which is being funded by a seed grant from Northeastern’s Global Resilience Institute, is to “minimize additional disasters caused by disasters,” Padir said, citing the nuclear accident in Fukushima and the explosions from a chemical plant in Houston after Hurricane Harvey as prime examples of cases where his aerial robot could be helpful.These aerial robots aren’t like the drones providing visual footage for news outlets, Padir said. Those images are helpful in conveying a general sense of the wreckage, but detecting infrastructure damage is a different story. Cracks, fractures, and other structural vulnerabilities are often inconspicuous and can appear innocent to the untrained eye.“A building may look healthy, but there are certain misalignments and certain cracks that might be problematic later on,” Padir said.