Award Data

Water expansion during freeze-thaw cycles can cause deterioration in concrete, leading to scaling, cracking, and crumbling over a period of years. Resistance to this damage is achieved with a system of voids formed by adding surfactants to the fresh concrete to stabilize air bubbles naturally entrained during mixing. The volume fraction, size, and spacing of these voids are critical. It is importa ...

Broken rails are a common cause of mainline derailments and a particular concern given the increasing use of our rail system for passenger traffic and petroleum products. The progressive nature of the defects provides an opportunity for early detection of cracks before they become significant enough to cause a derailment. Unfortunately, current inspection technology does not allow these inspection ...

Air parameters such as specific surface (SS) and spacing factor (SF) are essential in evaluating Freeze-Thaw (F-T) durability in fresh concrete. Currently there is no method or device that can accurately meet such requirements. We propose to develop an acoustic air void measurement system that can be used in the field to measure in near real time air void distributions in fresh concrete. The propo ...

The service life of the wood ties has been diminishing with increased axle loads with higher rail car speeds and frequencies. The depletion of wood and creosote induced contamination are of great environmental concerns. It is of a substantial interest to develop an effective recycling/remanufacturing methodology for creosote-treated wood ties. A composite wood tie design is proposed here, with use ...

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THIS PROJECT WILL DEMONSTRATE THE FEASIBILITY OF A MULTI-ZONED LINE FIRE DETECTION SYSTEM FOR AIRCRAFT. THIS WILL INCLUDE INTEGRATING THIS SYSTEM WITH A MICROPROCESSOR TO CONTROL, INTERPRET AND ANNUNCIATE THE FIRE ALARM SIGNALS.IN THIS WAY THE MULTI-ZONED DETECTION AND COMPUTER CONTROL WILL PROVIDE THE CAPABILITY TO MONITOR AND DISPLAY THE GROWTH AND SPREAD OF A FIRE IN REAL-TIME.

We propose to determine what outputs from the SSAJ measurement system would be suitable for traffic control applications, to determine what the "real time" needs and accuracies are for measurements of signature, speed, acceleration, and jerk (SSAJ), to integrate the output of our IST-222 Standard Signature Output Card with and Advanced Transportation Contorller (ATC) and finally to demonstrate pro ...

Intelligent Automation, Inc. and Oak Ridge National Lab is proposing a novel and integrated approach to inspect mechanical damages in the pipelines with or without coatings. It extends our successful work in a previous phase 1 project that combines the state of the art Shear Horizontal wave signal processing and pattern classification techniques, to detect and characterize the mechanical dents in ...

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