Lucas J.,DR Technologies, Inc.
Advanced Materials and Processes
Many component designs incorporate both electron beam welding (EBW) and laser beam welding (LBW) at the same facility to streamline the manufacturing process. At such facilities LBW is commonly used for welding steel sheet metal components and machined components under 0.3 to 0.5 in. thick. EB welds are used in gas turbine components for the deeper welds and welds requiring minimal distortion. LBW has simpler tooling requirements, and there are no physical constraints of an enclosure or vacuum chamber. Shorter cycle times translate to cost advantages without sacrificing quality. EBW is an extremely reliable technology due to features such as the precise control of both the diameter of the electron beam and the travel speed allows materials from 0.001 to several inches thick to be fused together. Source
Leung A.Y.,DR Technologies, Inc.
Journal of AOAC International
The current QC practice of quantifying presumed active chemicals or arbitrarily selected chemical markers is of doubtful value in assessing multicomponent complex traditional Chinese medicines (CMs) and often leads to an inconsistent or irreproducible research and clinical outcome. Consequently, the first and most important step in the QC of CMs (or other botanical medicines) whose exact active chemical components are unknown is to use analytical techniques that can comprehensively define the totality of the components/attributes making up their identity and quality. One of the most versatile techniques is HPTLC. Using HPTLC, along with other simple techniques such as FTIR spectroscopy and UV-Vis spectroscopy combined with complementary gene expression profiling, we have been able to correctly identify CM materials, detect adulterants, and differentiate closely related materials and botanical species. Our research has resulted in the introduction of the concept and specimens of Phyto-True Reference Material (PTRM™), aka Representative Botanical Reference/Research Material (RBRM™), now commercially available, and a novel patent-pending technology (Phyto-True™ system) that can serve as a starting point for the meaningful QC of traditional CMs so far not possible for these complex materials. Examples will be highlighted to demonstrate this new concept. Source
Agency: Department of Defense | Branch: Navy | Program: SBIR | Phase: Phase I | Award Amount: 100.00K | Year: 2011
DR Technologies, Inc. will begin development of a rugged, collapsible solar concentration device to support tactical alternative energy production. The concentrator will be designed to be high-accuracy, modular, field-replaceable, lightweight, and manufacturable. Phase I work will focus on the design of the concentrator to meet the above goals for a 3kW power converter while ensuring the system fits into a Light Tactical Trailer and is easily and quickly deployed. Several novel concentrator concepts are considered during Phase I that will be fully designed and analyzed before a final selection is made for a prototype system. A 1/4 concentrator segment will be fabricated to demonstrate the inexpensive manufacturing technology and as a concentrator for the innovative power routing system. New surface protection materials will be tested for performance after exposure to a number of environmental conditions, including vehicle exhaust, abrasive blast, and prolonged UV exposure. Phase I will establish a viable baseline design and several key components that are necessary to success once a prototype is built.
Agency: Department of Defense | Branch: Navy | Program: STTR | Phase: Phase I | Award Amount: 70.00K | Year: 2010
The proposed STTR will demonstrate how magnetic meta materials based antennas are ideal for integration into composite structures where the graphite composite backplanes can be integrated with dielectric ballistic protection materials that surround, yet do not interfere with the antenna. In ongoing research we have shown such antennas can approach the theoretical Gain-Bandwidth Product (GBWP) limit for radiators limited to a surface. (The two-dimensional equivalent of the well know three dimensional Fano-Chu limit.) A feature of the design of these antennas is the ability to trade-off the permeability of the material against the cross section required to attain the desired GBWP and minimize weight and cost of the metamaterial while maximizing gain and bandwidth.The instantaneous bandwidth of the antenna is critical in applications where the same radiator is to be used over a very broad band of frequencies. We will demonstrate the capabilities of this technology in the form of a broadband radiator operating from 20MHz up, integrated into a structure suitable for a side panel of a vehicle performing an anti-IED. This conformal design eliminates visual signature cues that could identify the vehicle carrying this panel as an anti-IED vehicle.
Agency: National Aeronautics and Space Administration | Branch: | Program: SBIR | Phase: Phase II | Award Amount: 600.00K | Year: 2010
Future NASA missions including the Cornell Caltech Atacama Telescope (CCAT) and Global Atmospheric Composition Mission (GACM), require 1 to 4 meter aperture, submillimeter-wavelength, primary reflector (mirror) segments. Astigmatic surface errors in a composite primary reflector and inconsistent radius of curvature in composite reflector segments limit application of composites to instruments. This project proposes to improve upon state-of-the-art passive reflector surface accuracy by characterizing the behavior and properties of actuated, graphite composite reflector laminates and panels that are suitable for space and earth science instruments. Surface error in composite primary reflectors and inconsistent radius of curvature in composite reflector segments currently limit application of composites to submillimeter wavelength primary mirrors. The goal is to minimize surface error including ROC error.