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Proposal title: Rapid Assessment of Air Void System in Fresh Concrete 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 ...

Proposal title: Broken Rail Detection from Flashing Rear End Device 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. Unfortu ...

Proposal title: Resilient Wayside Structures to Reduce Severity of Passenger Equipment Collisions and Derailments Additional passenger fatalities/injuries can occur during derailments involving interaction with wayside structures. Analogously, automobile fatalities often result from interaction of vehicles with roadside structures; personnel hazard reduction is a key design criterion for roadsid ...

TECHNICAL ABSTRACT: Ensuring the health of coastal marine ecosystems has emerged as one of the primary environmental concerns of this century. Frequent monitoring of water quality is required to establish baseline levels and enable early detection of problems. Citizen science programs have been shown to provide a highly effective method of monitoring water quality. Creare is developing an open-sou ...

TECHNICAL ABSTRACT: Commercially available unmanned aircraft systems (UASs) are not well designed to meet requirements for many atmospheric measurement applications, including deployment from ships, long endurance, and low cost. Existing multi-rotor systems suffer from limited payload and endurance. Existing fixed wing systems offer improved endurance and payload, but require significant support h ...

TECHNICAL ABSTRACT: Accurate marine weather nowcasts and forecasts are critical requirements for mariners to maintain situational awareness and ensure safe navigation for vessels, passengers, crew, and cargo. To best achieve this, reliable observations of atmospheric and sea conditions must be available at high spatial and temporal coverage. Unfortunately, existing approaches for marine weather ob ...