Award Data

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 ...

Most existing simulation tools are deficient in modeling gas flow effects, which have been proven to significantly affect the build quality of metal additive manufacturing (AM). In Phase I, the research team will extend our current Integrated Computational Materials Engineering (ICME) modeling toolkit by including a multiscale and multiphysics simulation modules to predict the effect of gas flow o ...

Phytodetectors will design and engineer a synthetic biological pump circuit to increase the volume of water produced via photosynthetic desalination. This project builds off previous technology designed by Phytodetectors: a mangrove-inspired ultra-filter that allows plants to purify salt water as well as secrete water with properties comparable to bottled water. The partnership seeks to demonstrat ...

We propose to develop tunable, high-power handling, low-loss phase-to-amplitude conversion photonic-integrated circuit (PIC) based device on heterogeneous SiN platform. The use of SiN for waveguide is the key to meet the stringent requirements, while additional heterogeneously integrated components are the key to enable tuning and locking of the phase-to-amplitude device. Nexus Photonics, realizi ...

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 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 ...

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 ...