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Briefs Manufacturing & Prototyping
Tin-Based IV-IV Heterostructures Fabricated Using Molecular Beam Epitaxy
The indirect nature of the fundamental energy gap in the elemental semiconductors Si and Ge prevents the use of these materials and their alloys in laser devices. The...
Briefs Manufacturing & Prototyping
Stencil Mask Methodology for Parallelized Production of Microscale Mechanical Test Samples
Over the past decade, there has been considerable progress in the development of new mechanical testing methods to characterize the properties of...
Briefs Software
Weapon Center of Mass Calculator
The Weapon Center of Mass (COM) software allows researchers to easily determine mass properties of a weapon system. The tool presents a photograph of the weapon and allows the user to place weight anywhere on the weapon by clicking on the screen. After the weight is placed, the software returns the mass properties...
Briefs Data Acquisition
Software Design for CFD Rotary-Wing Aeromechanics Modeling
Helicopter flight involves many multidisciplinary physics problems that are difficult to predict with today’s engineering modeling and simulation tools. Rotor aerodynamic systems...
Briefs Software
Crumple Zone Software Absorbs Attack Effects Before System Failures
A higher level of structural and operational endurance and ruggedness can be achieved in software systems by strategically introducing crumple zones (CZs) in the system...
Briefs Software
General Runtime/Architecture for Many-core Parallel Systems (GRAMPS)
The era of obtaining increased performance via faster single cores and optimized single-thread programs is over. Instead, a major factor in new processors’ performance comes from parallelism: increasing numbers of cores per processor and threads per core. In both research and...
Briefs Mechanical & Fluid Systems
Rotating Detonation-Wave Engines
All Navy aircraft and missiles use gasturbine engines for propulsion. Many ships are also dependent on gasturbine engines to generate both propulsive power and electricity. These engines are fundamentally...
Briefs Physical Sciences
Bi-Axial Vibration Energy Harvesting
For air platforms, the installation of Structural Health Monitoring (SHM) systems is complicated by the fact that the majority of SHM devices need to be fitted on internal aircraft structure, underneath the...
Briefs Physical Sciences
Quantitative Analysis of a Hybrid Electric Humvee for Fuel Economy Improvement
The Army has acquired several hybrid platforms to assess the applicability of hybrid technology for military missions. These hybrid platforms include both series and...
Briefs Materials
Electrochemical Energy Storage Materials
One of the most important requirements in next-generation batteries is to concurrently deliver high energy density and high power density (fast charge-discharge rates). The high power density requirement...
Briefs Materials
Solar and Thermal Energy Harvesting Textile Composites for Aerospace Applications
The proposed research focuses on developing novel energy harvesting devices that can be integrated with loadbearing structures in an air vehicle (e.g. a UAV)....
Briefs Materials
Thermo-Elastic Nondestructive Evaluation of Fatigue Damage in PMR-15 Resin
New aircraft are expected to use more composite materials. This drives the need for nondestructive evaluation (NDE) of composite materials. Current aircraft are flown...
Briefs Materials
Characterization of Ceramic Composite Materials Using Terahertz Nondestructive Evaluation Techniques
This work describes the use of nondestructive evaluation (NDE) techniques to characterize defects such as rust, voids, etc. in materials, and...
Briefs Materials
High Strain Rate Mechanical Properties of Glassy Polymers
Arange of experimental data has been generated describing the response of glassy polymers to high strain rate loading in compression. Recently, research programs that study the combined effects of temperature and strain rate have made significant steps in providing better understanding of...
Briefs RF & Microwave Electronics
Record and Playback Capabilities for Car Radio and GPS System Testing
With its international headquarters in Germany, IAV Automotive Engineering is one of the leading engineering and design providers for the automotive industry, working for...
Briefs Information Technology
Thermal-to-Visible Face Recognition
For nighttime surveillance, acquisition of visible light imagery is impractical due to the lack of illumination. Thermal imaging, which acquires mid-wave infrared or long-wave infrared radiation naturally...
Briefs Physical Sciences
Target Detection and Classification Using Seismic and PIR Sensors
Unattended ground sensors (UGS) are widely used in industrial monitoring and military operations. Such UGS systems are usually lightweight devices that automatically monitor the...
Briefs Physical Sciences
Component Identification in Multi-Chemical Mixtures with Swept-Wavelength Resonant-Raman Spectroscopy
The utilization of ultraviolet resonance Raman spectroscopy for the detection and identification of chemical, biological, and nuclear hazards is of great interest due to the sensitivity and specificity afforded by this technique. Detection by means...
Briefs Sensors/Data Acquisition
Analysis of Mine Impulse Data Using Stereo-Digital Image Correlation
Improvised explosive devices (IEDs) and other traditional under-body blast weapons are a significant threat to military ground vehicle systems. Engineers and scientists...
Briefs RF & Microwave Electronics
Modeling Supports Energy-Saving Microwave Technologies
During the Apollo Program, astronauts on the Moon encountered a small menace that created big problems: lunar dust. Similar to how tiny bits of Styrofoam behave on Earth — adhering to...
Briefs Physical Sciences
Wheel Force Transducer for Field Testing
This project endeavors to develop, validate, and calibrate cost-effective field test equipment for measuring tire characteristics on vehicles while driving off-road. The four wheel force transducers are...
Briefs Physical Sciences
Thermal Mechanical Fatigue Crack Growth Testing
Turbines in aircraft turbojet engines are being subject to increasingly higher temperatures to improve fuel efficiency. High turbine efficiency requires the ability of turbine blades to withstand...
Briefs Physical Sciences
Evaluation of Three Extremity Armor Systems
The US Marine Corps and the US Army have been engaged in efforts to evaluate improved body armor, including armor to protect the extremities. These efforts are focused on both body armor performance...
Briefs Sensors/Data Acquisition
Low-Power Distributed Jammer Network
The Distributed Jammer Network (DJN) is composed of a large number of tiny, low-power jammers, which are distributed inside a target network and emit radio energy to disrupt its communications. Recent...
Briefs Materials
Fundamentals of Metamaterials for High-Power RF Applications
Recent years have seen a burgeoning interest in the physics and applications of metamaterials. Briefly, metamaterials consist of a periodic array of subwavelength structures that...
Briefs Mechanical & Fluid Systems
Thermal Analysis and Microhardness Mapping in Hybrid Laser Welds in a Structural Steel
The concept of combining a laser welding system with a conventional arc welding system (GTAW) was first proposed in order to improve the stability of the laser welding system and to allow greater flexibility in part fit-up. Prior research stated that using a YAG...
Briefs Mechanical & Fluid Systems
Encapsulated Ball Bearings for Rotary Micro Machines
Microelectromechanical systems (MEMS)-fabricated silicon rotary elements for micro-motors, micro-generators, and micro-turbomachinery have received growing attention with applications in...
Briefs Mechanical & Fluid Systems
Reverse Pressure Capable Finger Seal
Each finger seal consists of a number of multiple thin metal laminates, each with a multitude of flexible projections that are referred to as “fingers.” To form a functional seal, multiple laminates are...
Briefs Manufacturing & Prototyping
Operation and On-Chip Integration of Cavity-QED-Based Detectors for Single Atoms and Molecules
A new experimental platform for studies of transport and quantumlimited measurements of cold, trapped atomic gases was constructed. Using microfabrication processes, a silicon wafer was micromachined to allow for deposition of micrometer-scale...
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