CHATTANOOGA ENGINEERS CLUB http://www.utc.edu/~engrcs/cec/cec.htm Volume LI April 17, 2000 12:00 noon Number 14 The Cellar at Union Square THIS WEEK__________________________________________________________________ Mike Ingram has coordinated last of the PPI presentations. Gregory A. Brodie, representing TVA Technology Advancements, will speak on "Treatment of industrial wastewater with constructed wetlands and passive technologies". TVA operates 19 constructed wetlands-based, passive treatment systems (PTS) to treat up to 150 million gallons per day of acid drainage at coal mines and fossil plants throughout the Tennessee Valley. Mr. Brodie will talk about the technology, current efforts, and future projects. Per Mr. Brodie, additional systems are being considered, including one at a Kentucky Fossil Power Plant to treat high volume, ammoniated flue gas disposal wastewater. LAST WEEK___________________________________________________________________ Dr. Ron Goulet, Assistant Professor, UTC College of Engineering and Computer Science, presented "Accurate 3-D Measurement of Motion in the Determination of Fracture Rigidity of Orthopedic Constructs". The UTC College of Engineering and Computer Science Bio-mechanics and Materials Testing Laboratory, in collaboration with the UT College of Medicine Dept of Orthopedic Surgery, has completed studies of devices used to repair fractures of the femur, pelvis, and clavicle. This work is designed to compare the performance of competing orthopedic devices in order to assist the orthopedic surgeon in his or her clinical treatment decision-making. Frequently, the practitioners will use the technique and/or tools they are most familiar with. The studies will provide data for practitioners to investigate other alternatives. Bio-mechanical performance comparisons are generally based on ultimate strength, stiffness and fracture rigidity. Fracture rigidity is determined by measuring the motion at the fracture site as a function of applied load. Due to the bones' complex shape and variable geometry of loading, motion between opposing fracture surfaces will have shear, normal and rotational components. Therefore, accurate 3-D measurement of the motion is required. Measurement approaches utilizing conventional strain gages, mercury strain gages, lvdt's, 1-D extensometers and the newly developed 3-D extensometer are discussed. Funding for this work was provided in part by Center for Excellence in Computer Applications and the Orthopedic Research and Education Foundation. COMING PROGRAMS________________________________________________________ April 24 - Philip E. Luce, PE, Vice-president of ARCADIS Geraghty & Miller and Raymond A. Cordon, PE, Project Manager, Riverbank Infiltration, an award winning water intake project at Louisville, KY May 1 - Michael Bliss, Speech Recognition Solutions, "Speech Recognition software and applications." May 8 - Field trip, TBA. May program chair is Jack Wagner. FUTURE BULLETINS____________________________________________________ Due to the one week closing of Printed Image. CEC bulletin for April 10 was not printed or distributed. Our apologies for any inconvenience. Starting in May, the hardcopy form of our bulletin will become a monthly issue. CEC will continue to post the weekly bulletin electronically. Uwe Zitzow will chair the committee to design a new format for the monthly newsletter and the weekly bulletin, please contact Uwe Zitzow, .uwe@chattanooga.net, 756-4321, with any suggestions, or to join the committee. MEMBERSHIP DUES__________________________________________________________ 192 members have submitted year 2000 dues, please send in your dues and scholarship contribution at your earliest convenience. --- Chattanooga Technology Council Mailing List | A free service provided by To unsubscribe, e-mail: ctc-unsubscribe@cdc.net | CDC Internet, Inc. For additional commands, e-mail: ctc-help@cdc.net | http://www.cdc.net "