Systems and Information

Adhesion/Cohesion in Systems involving Energetic Materials Composites and Solid Surfaces

By improving the performance of swabs used in the detection of explosives residues in airport security settings, it is possible to improve the efficiency and accuracy of interdiction efforts. Explosives residues include a matrix of binder material which encapsulates particles of energetic material. The adhesion of these composites, and the mode of failure when they are removed from the surface, must be understood in order to optimize the design and method of implementation of the swabs used during residue detection. Dr. Steve Beaudoin's preliminary work is based on an approach taken to evaluate the breakup of granules during granulation processes. This approach categorizes cohesive (within granule) failure as either brittle or plastic, based on the measured values of the dimensionless strength and capillary numbers.

System of Systems

Wireless sensor network is a wireless network consisting of spatially distributed autonomous devices using sensors to cooperatively monitor physical or environmental conditions, such as temperature, sound, vibration, pressure, motion or pollutants, at different locations. The development of wireless sensor networks was originally motivated by military applications such as battlefield surveillance. However, wireless sensor networks are now used in many civilian application areas, including environment and habitat monitoring, healthcare applications, home automation, and traffic control. In addition to one or more sensors, each node in a sensor network is typically equipped with a radio transceiver or other wireless communications device, a small microcontroller, and an energy source, usually a battery. The size of a single sensor node can vary from shoebox-sized nodes down to devices the size of grain of dust. Size and cost constraints on sensor nodes result in corresponding constraints on resources such as energy, memory, computational speed and bandwidth. Dr. Ed Delp combines Wireless Sensor Networking with Visual Sensor Networking.

Adaptive Radio Electronics and Sensors

Since 2004, Prof. Peroulis, serving as PI or co-PI, and the Adaptive Radio Electronics and Sensors (ARES) Group have engaged in funded research projects totaling in excess of $40.6 million. These have included thirty projects with the Department of Defense, eight with the National Science Foundation, three with the Department of Energy, four with NASA, and twelve with direct private industry support. The primary focus of this research has been on reconfigurable electronics and sensors, while low-cost semiconductor processes are commonly employed by the ARES group to develop and commercialize their devices.

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