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Briefs Unmanned Systems
Simultaneous Vibration Suppression and Energy Harvesting
The goal of this work was to investigate the concept of using harvested energy to directly control the vibration response of flexible aerospace systems. Small, lightweight, flexible micro...
Briefs Electronics & Computers
Power Management for the Electric Taxiing System Incorporating the More Electric Architecture
With airlines increasingly directing their attention to operating costs and environmental initiatives, the More Electric Architecture for Aircraft and...
Technology Report Automotive
SAE Committee to Work with VDA on R-744 A/C Standards
R-1234yf may be the choice of most car manufacturers worldwide as the new low-global-warming (LGW) A/C refrigerant to replace R-134a, but as many in the industry have learned, there are...
Technology Report Materials
ZF's CEO Talks About Lightweight Vehicle Applications
The debut of a brake pedal and its housing unit made from fiber-reinforced thermoplastics on a MY2014 German sports car serves as a vivid example of weight-conscious products reaching production application.
News Materials
Titanium Auto Parts 3D-Printed from Low-Cost Metal Powders
Sterling strength-to-weight ratios and corrosion resistance make titanium ideal for building lightweight vehicles. The problem has always been cost; it takes great quantities of...
News Energy
Schaeffler Tech Demonstrator Achieves 15% CO2 Reduction
Technical specialists retrofitted a MY2013 Ford Escape with Schaeffler technologies, and the payback is a double-digit-percentage fuel-economy improvement compared to the production...
News Automotive
Ashok Leyland Pursues Stainless Steel for Bus ‘Super Structures’
The design approach for bus body architecture has gone through different phases—namely, chassis based, semi integral, integral, and monocoque. Equally varied is the...
Briefs Materials
Formation and Characterization of Gold Nanoparticles
One-dimensional nanowires are of increasing interest due to their size, physical properties, and other applications in opto-electronics. For example, nanowires have already been used in...
Briefs Materials
Carbon Nanotube Thermal Interfaces Enhanced with Sprayed-On Nanoscale Polymer Coatings
As the semiconductor industry continually strives to increase the power density of single-chip packages, thermal management remains a critical challenge...
Briefs Materials
Lipid Layer-Based Corrosion Monitoring on Metal Substrates
Corrosion is a deforming process that costs the United States Department of Defense (DOD) approximately $23 billion annually and accounts for 23% of all DOD maintenance. Exhaustive...
Briefs Imaging
Confocal Imaging System for Ultra-Fast, Three-Dimensional Transport Studies in Thermal Management Applications
The objective of this work was to develop a high-speed, three-dimensional (3D) confocal imaging system to study coupled fluidic and...
Briefs Physical Sciences
Evaluating a Data Clustering Approach for Lifecycle Facility Control
Given the current emphasis on sustainability, there is a growing interest in monitoring various facets of building resource consumption. Building monitoring and automation...
Briefs Physical Sciences
Portable Data Recorder for Measuring Sand Grain Fracture After Blasts
Abullet cannot penetrate through a sandbag while an arrow can, so understanding the behavior of granular materials such as sand and its energy absorption in a blast is...
Briefs Medical
Effect of Acceleration Frequency on Spatial Orientation Mechanisms
Extreme motion environments can induce loss of visual acuity, motion sickness, and spatial disorientation. Understanding how human sensory integration of acceleration stimuli affects spatial awareness will improve models of spatial disorientation and mishap analysis. While there are...
Briefs Physical Sciences
Localization of Head-Mounted Vibrotactile Transducers
T he human sensory systems most frequently used in military displays (vision and audition) are sometimes overloaded. When soldiers rely on visual or auditory displays, their situation...
Briefs Physical Sciences
High-Resolution, Measurement-Based, Phase-Resolved Prediction of Ocean Wavefields
Given remote and direct physical measurements of a realistic ocean wavefield, the goal of this work was to obtain a high-resolution description of the wavefield...
Briefs Test & Measurement
Measuring Impact Damage to Toughened CFRP Laminates with Time Domain Reflectometry
Laminated Carbon Fiber Reinforced Polymer (CFRP) composites are very effective in weight saving in aeronautical structural components. For these laminated CFRP...
Briefs Physical Sciences
Testing Mechanical Properties of Polymer-Based Multi- Phase Particulate Composites
Polymer composites comprised of metallic particles distributed throughout a contiguous polymer matrix can often be modified to produce advanced composites that...
Briefs Physical Sciences
Humanlike Articulated Robotic Headform for Respirator Fit Testing
The testing of individual respiratory protection (IRP) devices is now accomplished with panels of human wearers. Historical at tempts to simulate the human face and head have...
Briefs Manufacturing & Prototyping
Three-Dimensional Plastic Part Extrusion and Conductive Ink Printing for Flexible Electronics
Structural electronics, or structronics, seeks to build wiring and electrical interconnects directly into component structures to diminish the need...
Briefs Manufacturing & Prototyping
Micro-Composite Fabrication via Field-Aided Laminar Composite Processing
Much work has been accomplished since the discovery that particles in a dielectric fluid experience forces when placed in an electric field, including mathematical...
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 Software
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...
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