Award Data

Interference of unburned and activated carbon in fly ash with air-entraining admixtures (AEA’s) in fresh concrete mixtures is a major concern in the concrete industry. Therefore, a rapid and accurate measurement of adsorption capacity of fly ash is of great interest to this industry. In this project, a new method is suggested, which can qualitatively and quantitatively measure different surfact ...

We propose a methodology for modeling and computationally optimizing anodic metal-filled primers using extensions of approaches that we already employ for corrosion analysis. Modeling will be developed using Star CCM+, a Computer Aided Engineering (CAE) platform from CD-Adapco. We presently use this for corrosion analysis when we need to incorporate computational fluid dynamics to take the variab ...

There are numerous conditions where gas turbine engines ingest small particulates. Of particular concern are the particles (~1-10 micrometer) that are ejected into the atmosphere as volcanic ash. Ingestion of these particles has numerous detrimental effects. Particle collisions cause abrasion of compressor blades, leading to loss of efficiency. Ingested particles that partially or completely melt ...

Advances in semiconductor technologies, including Gallium nitride (GaN) and Silicon carbide (SiC), are allowing for the wider use of solid-state devices in modern radar systems. These devices include direct digital synthesizers and their associated memories, i.e. numerical look up tables for reprogrammable radar parameters, as well as solid-state power amplifiers (SSPA). Since solid-state systems ...

We will develop a simple, lightweight, compact, robust, and inexpensive instrument package that will report essentially all ultrashort-laser-pulse characteristics. It will yield, on a single shot, the pedestal power and complete pulse spatiotemporal field, E(x,y,z,t)i.e. all possible pulse information, including pulse-shape stability, even if multi-shot operation is required. It will include user- ...

The overall and principal objective in the Phase I effort will be determining the feasibility of an algorithmic approach to yield reliable and reduced target AOUs in an air deployed multi-static active sonar field. The feasibility will be based on the realized accuracy gains; achieving real-time data turn-around; and the computer information processing (IP) resources needed for estimating AOUs in ...

The Navy’s Fleet-Class Common Unmanned Surface Vessel (CUSV) demands associated subsystems function with robust reliability and minimal operator intervention in order to operate at peak effectiveness. Mine Warfare’s (MIW) inherently hazardous nature requires particular focus on reducing manning requirements and simplifying operator machine interface (OMI) in order to minimize danger to personn ...

Phase II of this SBIR research effort fosters the next step of introduction and application in the development of a bistatic capability for surface and submarine Mid-Frequency (MF) active sonar systems. This development will enhance anti-submarine warfare (ASW) capability in strike group or coordinated surface and submarine ASW operations. Phase II builds on progress made in Phase I to develop and ...

The ultimate goal of the phase II effort is to build Si-based PCSS 10kV-modules and compare coupling of those modules to different microwave radiation technologies. The microwave radiating technologies include at least non-linear transmission lines and direct drive antenna; comparisons and system-level tradeoffs will be identified through normalized field measurements.

Additive manufacturing involves complex multi-scale and multi-physics mechanisms and phenomena but has the potential to produce low volume near net products with very little waste of raw materials. But understanding the complex physical mechanisms and interactions using today's simulation tools is too expensive.