Materials
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Articles Electronics & Computers
Carbon Nanotube Technology Promises a Revolution in Electrical Cabling
While carbon nanotube technology (CNT) has generated widespread interest for applications ranging from semiconductors to medical, one area that is a focus of research at TE...
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
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 Physical Sciences
Fatigue Crack Detection Via Load-Differential Guided Wave Methods
Guided waves (e.g., Lamb waves) have been considered for many structural health monitoring (SHM) applications because of their ability to travel long distances and maintain...
Briefs Materials
Size Scale and Defect Engineered Nanostructures for Optimal Strength and Toughness
Realistic combinations of ceramics and/or semiconductors have been developed that simultaneously achieve high hardness (>40 GPa) and toughness (>400 MPa*m1/2). To achieve this goal, there were three primary objectives: (1) the development of physically base...
Application Briefs Defense
Fluorosilicones
A broad operating temperature range, fuel resistance and long-term reliability are some of the unique properties of fluorosilicones that make them useful in aerospace applications. To demonstrate their effectiveness, NuSil...
Articles Aerospace
Using Fiber Metal Abradable Seals in Aerospace Turbine Applications
Limiting leakage in aerospace turbo-machinery has been a focus of engineers ever since the advent of the turbine. An increasing number of companies are finding that fiber metal...
Application Briefs RF & Microwave Electronics
Impact of Materials on Microwave Cable Performance
The environments in which microwave cable assemblies are being used today are becoming more challenging with exposure to such conditions as extreme temperatures, chemicals, abrasion, and...
Briefs Data Acquisition
MEMS Resettable Circuit Breaker and Switch for DC-DC Voltage Converters
Resettable circuit breaker cantilevers use silicon dioxide (SiO2) for temper ature compensation. The compressive stress in the SiO2 causes the cantilever to bow upwards 400...
Briefs Electronics & Computers
Differential Amplifier Circuits Based on Carbon Nanotube Field Effect Transistors (CNTFETs)
Since their discovery, carbon nanotubes (CNTs) have been extensively studied for their great potential in a variety of applications. Several desirable properties that CNTs possess include a high thermal conductivity, high electrical mobility, high electrical...
Briefs Mechanical & Fluid Systems
Membrane Pump for Synthetic Muscle Actuation
A synthetic muscle has been developed that uses inflatable balloons to produce a tensile force from a positive pressurization. Mechanical supply and ducting is used to provide the required pressurization. However, the mechanical supply and ducting that is currently used is limited in several respects. To...
Briefs Materials
Mechanical Response of an Al-PTFE Composite to Uniaxial Compression Over a Range of Strain Rates and Temperatures
Reactive materials can be loosely categorized as composites of inert solid materials which, when subjected to a violent mechanical...
Briefs Sensors/Data Acquisition
Cracking of Aluminum Panels Repaired With Composite Patches
An experimental study of the mechanical behavior of cracked aluminum specimens repaired with composite-material patches has yielded findings that may eventually contribute to the...
Briefs Materials
Testing Silver-Coated Nylon Fibers as Electrical Conductors
Tests have been performed in an effort to gain understanding of electrical and mechanical properties of silver-coated nylon fibers subjected to stresses and strains and exposed to...
Briefs Mechanical & Fluid Systems
Biaxial and Shear Testing Apparatus With Force Controls
An apparatus for in-plane biaxial tension/compression and in-plane shear testing of fabrics, other flexible sheet materials, or relatively rigid thin plate materials has been invented. The...
Briefs Medical
Scientists Create Optically Equivalent Synthetic Human Tissue
Lasers are an integral part of the modern battlefield, used for applications as diverse as point-to-point communications and ballistic missile defense. Their widespread use increases...
Briefs Materials
Ceramic Matrix Composites Research
AFRL scientists characterized and evaluated the high-temperature mechanical behavior of fiber-reinforced ceramic matrix composite (CMC) materials used in aerospace structural applications. Researchers examined...
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Advancements in Zinc Die Casting Technology & Alloys for Next-Generation...
Automotive
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Vibroacoustic and Shock Analysis for Aerospace and Defense Applications