Award Data

The Phase I research objective is to demonstrate the feasibility of optimizing gas flow for producing defect-free repair of structural metal components using Directed Energy Deposition (DED) Additive Manufacturing (AM). Insight into the multi-physics gas interaction with metal fusion and the causality of gas-induced defect formation in DED repair will be developed using an Integrated Computational ...

Users of additive manufacturing machines expect the highest quality when it comes to the mechanical properties of parts, the usability of the machines and associated processes, and overall machine design. The main contributor to the quality of the part is the involvement of process-related by-products originating from the melting process. To handle these by-products in additive manufacturing - in ...

We propose a serially concatenated switchable asymmetric Mach Zehnder switching network on a silicon nitride photonic integrated circuit platform to provide flexible and switchable demodulation of signals from less than 1 GHz to greater than 45 GHz. The silicon nitride platform provides a low size weight and power solution while reducing the stabilization requirements and providing long path lengt ...

Hepburn and Sons LLC teamed with North Carolina State University (NCSU) proposes an analysis of alternatives (AoA) to design and optimize a megawatt class, solid state transformer rectifier (SSTR) supporting maintainability of U.S. Navy shipboard power infrastructure. The design will convert 13.8kV AC to +-850V DC with modular, line-replaceable units (LRUs) that are compact and lightweight such th ...

Solutions are sought by the Navy to introduce a new design and/or new technologies to improve transformer-rectifier (T/R) maintainability, with a focus on modularity, hatchability, temperature regulation, and simplicity. The proposed solution by American Maglev Technology of Florida (AMT) and the University of Houston incorporates HTS-based transformers, coupled with LRU control unit partitionin ...

Hemp fibers are proven to be tougher, stronger, and more abrasion resistant than cotton. They are more sustainable, and UV and mold resistant, making it an excellent primary fiber in yarn and textile for battle dress, utility, workwear and outdoor wear.  Degummed, cottonized hemp can be blended with other fibers to bring out the best attributes of each and create new innovative yarns to manufact ...

Hemp fibers have been used in textile applications for thousands of years, but have been limited to textiles for home furnishing, rope, sacks, and other non-clothing textile applications. However, new treatment methods for hemp fibers to improve their hand, as well hemp’s general softening properties with time and wear, make these fibers attractive for use in performance clothing due to hemp’s ...

Hepburn and Sons LLC proposes to design a ground fault detection system for 440VAC three phase radial Navy shipboard power distribution, while teaming with their partner Florida State University, Center for Advanced Power Systems (FSU CAPS). Existing Navy ground fault detection systems can detect and locate single line to ground faults on a given phase, but a second ground fault on a separate phas ...

Cornerstone Research Group Inc. (CRG) and the University of Dayton Research Institute (UDRI) propose to develop a System Ground-Fault Identification and Detection (SG-FIND) platform for naval shipboard three-phase radial power systems. These ungrounded and high-resistance grounded power systems allow for continued operation with a single line fault; however, a second line fault on another phase pr ...

The U.S. Navy is actively developing new High Temperature Superconducting (HTS) technologies to support its all-electric ship program. The HTS technologies being investigated by the Navy include power distribution cables, DeGaussing cables, (HTS-DG), unmanned Mine Sweeping (HTS-MS), motors/generators, and Superconducting Magnetic Energy Storage (SMES).For any of these HTS based systems, there is a ...