Dr. Ralf Birken joined Infrasense in May of 2022 as Principle Engineer with over 20 years of research and engineering experience in industry and academia, focusing on Subsurface Utility Engineering (SUE), Pavement and Bridge Deck Inspection, and Non-Destructive Evaluation (NDE). He has a Ph.D. in Geophysical and Geological Engineering from The University of Arizona. He is an inventor listed on 7 patents, the author of 4 book chapters, 15+ journal publications, 70+ conference proceedings, and 30+ other miscellaneous publications, posters, or major technical reports. In his spare time Ralf is a passionate basketball player, coach, and Celtics fan.