Graduate student Ediuska Laurens was elected as the student representative on the 2007-09 Executive Council of the International Society of Biomechanics. She was chosen over students from Australia, England and Case Western Reserve University. This July, she will represent students from all over the world when she attends her first ISB meeting in Taipei.
Laurens is a second-year doctoral student in the Applied Biomedical Engineering program, a collaborative effort between Cleveland State and the Cleveland Clinic. She does her research at the Clinic’s Lerner Research Institute in the laboratory of biomedical engineer Dr. Tony Calabro. Her area of expertise is using hydrogels as a basis for tissue-engineered devices to replace human tissues.
Laurens holds a master’s degree from SUNY-Buffalo. A native of Venezuela, she is the first person from South America to serve on the ISB Executive Council.
August 14, 2009
Professor of Chemical and Biomedical Engineering Surendra Tewari’s research on the solidification of single-crystal castings gains national scientific prominence
For the last eight years, NASA has seen a significant reduction in federal funding for conducting scientific experiments in outer space. But on August 24, the NASA Space Shuttle Discovery will take six experiments to the International Space Station Freedom’s U.S. Laboratory Module Destiny for low gravity experiments to be conducted by astronauts aboard, and CSU Chemical and Biomedical Engineering Professor Surendra N. Tewari is at the forefront of the U.S. scientific experimentation.
The NASA expedition is part of a collaborative research program with the European Space Agency (ESA). In this first series of six materials science experiments to be conducted on the Space Station, two are U.S.-based and four are European. The U.S. team, consisting of Professor David Poirier and Professor Robert Erdmann (University of Arizona), Professor Tewari (CSU), and Dr. Frank Szofran (NASA-Marshall Space Flight Center), is studying variances in the crystallization of metals in space and on earth.
These experiments aim to understand to what extent convection (the transfer of heat by movement of fluid), which is always present on earth, is responsible for creating defects in castings, and what happens to these defects when solidification is allowed to occur in the significantly reduced convection environment of space. These experiments will examine how single-crystal dendritic castings solidify differently in space, and how growth speed changes influence their grain structure. Single-crystal castings are critical components in high-temperature gas-turbine engines that are used in high-speed aircraft and land-based power turbines.
The technological significance of these experiments is that they will provide the scientific foundation to understanding and controlling how single-crystal castings solidify. It is hypothesized that in space, the single-crystal castings will solidify with more order and less defects. The knowledge generated from these experiments will be helpful for the casting industry in improving the processing behavior and eliminating defects, thus reducing the number of manufactured items that have to be rejected.
Destiny is the primary research laboratory for U.S. payloads, supporting a wide range of experiments and studies contributing to health, safety and quality of life for people all over the world. Science conducted on the Station offers researchers an unparalleled opportunity to test physical processes in the absence of gravity. The results of these experiments will allow scientists to better understand our world and ourselves and prepare us for future missions, perhaps to the Moon and Mars.
Dr. Tewari is available to discuss his research. To arrange an interview or for more information, contact the CSU University Marketing Office at 216.523.7279.
Read the Plain Dealer post for additional details.