Keyword: Joining

Articles: RF & Microwave Electronics
Is RF engineering a form of black magic? Learn about the challenges in developing a low noise amplifier (LNA) for the aerospace market.
Articles: Materials
Learn about the most common bond systems for CBN wheels: resin, vitrified, and electroplated matrixes.
Briefs: Materials
Newly developed computational approaches aid in the design of composites that exhibit remarkable abilities to both sense external cues and adapt to these cues in controllable, "programmable" ways.
Briefs: Defense

Lightweight composite structures offer significant long-term cost-saving opportunities for the U.S. Army as replacements for traditional metal structures....

Articles: Materials

The process of determining the ideal plasma treatment that will resolve a challenging bonding or adhesion issue is an exact science, often the domain of chemists and...

Briefs: Materials

The objective of this research was to hydraulically pressurize the internal diameter of one 102mm Polymer Matrix Composite (PMC) over-wrapped cylinder up to 25,000 pounds per...

Articles: Electronics & Computers

The interconnected backbone of a MIL-STD-1553B vehicle depends on the electrical and mechanical reliability of the components, the design, and the installation. With the vast array of MIL-STD-1553B...

Articles: Test & Measurement
Metric-Sized Metal Shapes

Parker Steel Company (Maumee, OH) offers metric-sized metals suitable for applications where presized metric parts are needed....

Briefs: Aerospace

Joining of composites can be a challenging issue. If adhesives are used, the joints are permanent and cannot be undone. If they need to be undone, inserts are often used and these inserts increase cost...

Articles: Defense

RF and microwave components deployed in spaceflight applications can experience hundreds of degrees of temperature variation, massive amounts of radiation, and can be expected...

Briefs: Defense

The main goal of this work is to obtain a scientific understanding of the possibilities provided by, and the behavioral features of, a novel type high...

Briefs: Defense

There is a great need for energy sources that can power unattended sensors for more than a decade. Unattended sensors can be located in harsh and remote locations that are often dangerous...

Briefs: Defense

Coatings that impart hydrophobic properties are of considerable interest. For applications such as aircraft windows, optical components, protective...

Articles: Electronics & Computers

It can be argued that small form factor design trends are paradoxical. As form factor size decreases, functionality requirements increase; as processing power requirements heighten, lower...

Articles: Aerospace

Input filter caps need to be able to supply a quick burst of energy and to suppress noise generated in the switch circuit. Important considerations for the input filter cap...

Articles: Sensors/Data Acquisition

As military programs continue to place an ever growing reliance on embedded computer systems, developments in rugged computer design must continue to advance to keep pace with...

Briefs: Electronics & Computers
Dense Transducer Array

A dense transducer array is an acoustic transducer with relatively high operational bandwidth. It includes a cable harness component that provides and organizes various conductors within piezocomposite substrates to form transducer arrays with minimum impact on electroacoustic performance. Several underwater sonar...

Briefs: Materials

Reactive materials can be loosely categorized as composites of inert solid materials which, when subjected to a violent...

Briefs: Electronics & Computers

An AC coupled interconnect (ACCI) has been developed that could be used to create multiple solutions to contactless chip-to-chip communications. Assembly and testing of a 0.18 um...

Briefs: Manufacturing & Prototyping

Experiments in patterning of thin films of polycrystalline bismuth telluride (Bi2Te3) on silicon substrates have been performed. Bi2Te3 is...

Briefs: Physical Sciences

A method for providing a time code for multiple streams of simultaneously received data has been developed in order to allow reconstruction of the data after asynchronous transfer. It is often...

Briefs: Materials

A developmental method of increasing the thermal conductance of an adhesive joint in a composite-material structure (or between a composite-material structure and another structure)...

Briefs: Medical

Progress has been made in a continuing effort to develop surgically implantable, biocompatible electrochemical- sensor arrays for continuous measurement of concentrations of analytes...

Briefs: Electronics & Computers

An experimental study of self-assembly processes in which small, heterogeneous components become spontaneously aligned with each other and bonded through soldering of mating electrical...

Briefs: Manufacturing & Prototyping

An experimental study of vacuum brazing of titanium and of the effects of changes in brazing alloys and brazing process conditions has been performed. [As used here, “titanium” signifies both...

Briefs: Physical Sciences
Progress in Research on Bacteria-Powered Motors

Progress has been made on several fronts in research on biomotors and especially on microscopic motors powered by bacteria. The progress consists mostly of advances in the art of attaching motile bacterial cells to surfaces in specific, pre-designed microarrays.

Briefs: Materials

AFRL scientists are studying a unique metal joining process— friction stir welding (FSW)—for building major structural assemblies. FSW is a solid-state welding process that forces a spinning...

Briefs: Materials

AFRL materials engineers resolved a potentially serious problem that affects the operational life of F-15E vertical stabilizers. Working with engineers from Warner Robins Air...