DesignSafe Radio Natural Hazards Engineering Research Infrastructure

Meteorologist and educator Erik Salna provides nitty-gritty details on the gigantic, NSF-funded wind research lab called the Wall of Wind, or WOW. Located at Florida International University in Miami, the WOW facility is part of the NSF-funded NHERI network. Each of WOW’s 12-fans are six feet in diameter and weigh nearly 15,000 pounds. Powered up together, the 720HP electric motors can reproduce category 5 hurricane wind speeds, 157MPH.

UC Davis professor Alejandro Martínez is moving his bio-inspired snakeskin piles into industry practice. The novel pile-surface employs “frictional directionality” characteristic of snakeskin. Field trials provided better than expected results, and Martínez is now working to get his new design into the hands of practicing geotechnical engineers. Much of his NSF-supported research took place at the NHERI at UC Davis Center for Geotechnical Modeling; the project is part of the NSF-funded Engineering Research Center, the Center for Bio-mediated and Bio-inspired Geotechnics, CBBG, at Arizona State University.

UC Davis professor Alejandro Martínez explains how biogeotechnical engineers leverage solutions from lifeforms like worms, trees, and bacteria. It starts with fundamental, cross-disciplinary work with biologists. Then, at the UC Davis Center for Geotechnical Modeling (CGM), centrifuge tests fill an important gap between laboratory ideas and full-scale field tests. For instance, by replicating ground stress and increased gravity in a centrifuge, geotechs can model and test designs at greater soil depths and across soil types. The NHERI CGM facility functions as a testbed for the NSF-funded Engineering Research Center (ERC) called the Center for Bio-mediated and Bio-inspired Geotechnics, CBBG, based at Arizona State University.

Geotechnical engineer Alejandro Martínez joins us to discuss a new and multidisciplinary engineering subfield called biogeotechnics. “Bioinspired” research examines and mimics ways that plants, animals and bacteria successfully interact with soil. For example: how tree roots successfully resist wind loads. “Biomediated” research uses biological elements to improve soil. For example, byproducts of certain bacteria can cement and desaturate soil — potentially preventing liquefaction in susceptible areas.

Meet Nurullah Bektaş, engineering PhD candidate and research chair with the NHERI Graduate Student Council. He talks with Dan Zehner about the virtual GSC Mini Conference, slated for May 31, 2024. Bektaş, who is earning his PhD from Széchenyi István University in Hungary, encourages grad students in natural hazards get involved in sharing research and conducting post-event reconnaissance. He relates his own field experience helping householders in Turkey after the devastating 2023 earthquake series in Turkey and Syria.

Find out about the GSC Mini Conference: https://bit.ly/2024NHERIGSCMiniConference

The novel Converging Design research project merges post-earthquake functional recovery with sustainability. Project PI Andre Barbosa discusses potential results from this effort, such as building code updates and new building products. Other tangible outcomes: successful industry-academia partnerships — and a cohort of engineering students who will take lessons about _sustainable functional recovery_ into the future. Barbosa welcomes individuals curious about sustainable design to contact or visit to the Tallwood Design Institute, located on the campus of Oregon State University in Corvallis, Oregon.