Seismology and Resilient Infrastructure
Domniki Asimaki, Professor of Mechanical and Civil Engineering, is interested in the behavior of geotechnical systems under the influence of forces such as wind, waves, and seismological activity. Using this information, she hopes to make predictive computer models that can lead to the design of an infrastructure that is resilient to natural and man-made hazards. Her work also relates to the harvesting of wind energy and she explains, “People like myself with an engineering background, but also with scientific curiosity, can work in areas like this and set the performance and design standards from scratch. But because the energy-harvesting industry is just starting out, we need to make it innovative while still financially feasible.” [Interview with Professor Asimaki] [ENGenious article]
Professor Andrade Elected to Engineering Mechanics’ Board of Governors
José E. Andrade, Professor of Civil and Mechanical Engineering, has been elected as a member of the Board of Governors for the Engineering Mechanics Institute (EMI) of the American Society of Civil Engineers (ASCE) . The goal of the EMI is to stimulate and support mechanics-related activities by enabling new technologies, developing rational and quantitative decision-making paradigms, advancing mechanics as a science, and playing key roles in the education of university students and practicing engineers.
Variability Keeps The Body In Balance
By combining heart rate data from real athletes with a branch of mathematics called control theory, John Doyle, Jean-Lou Chameau Professor of Control and Dynamical Systems, Electrical Engineering, and Bioengineering and colleagues have devised a way to better understand the relationship between reduced heart rate variability (HRV) and health.
"A familiar related problem is in driving," Doyle says. "To get to a destination despite varying weather and traffic conditions, any driver—even a robotic one—will change factors such as acceleration, braking, steering, and wipers. If these factors suddenly became frozen and unchangeable while the car was still moving, it would be a nearly certain predictor that a crash was imminent. Similarly, loss of heart rate variability predicts some kind of malfunction or 'crash,' often before there are any other indications," he says. [Caltech Release] [Read the Paper]
Ceramics Don't Have To Be Brittle
Julia R. Greer, Professor of Materials Science and Mechanics, and her colleagues are on the path to developing materials that possess unheard-of combinations of properties. "Ceramics have always been thought to be heavy and brittle," says Professor Greer. "We're showing that in fact, they don't have to be either. This very clearly demonstrates that if you use the concept of the nanoscale to create structures and then use those nanostructures like LEGO to construct larger materials, you can obtain nearly any set of properties you want. You can create materials by design." [Caltech Release]