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Manufacturing & Prototyping

Curing the Porosity Problem in Additive Manufacturing

During the additive manufacturing process, microscopic holes that are invisible to the naked eye are formed within the body of the part.

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Articles
Materials

Dürr Builds Advanced Paint Shop for EV Startup Byton

China-based automotive startup Byton, fresh from beguiling attendees of the recent Los Angeles auto show and the subsequent CES at the start of 2019, confirmed it intends to begin...

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Articles
Materials

Using Thermoplastic Composites for Aerospace Applications

Recent advancements in composite production and processing are making thermoplastics a viable option in a wider array of aerospace applications.

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Briefs
Aerospace

Designing and Fabricating a Multiple-Decade Battery

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...

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Technology Update
Defense

Toho Tenax Develops 'Super-Heat-Resistant' Prepreg for Engine Apps

Toho Tenax Co., Ltd. announced Nov. 6 that it has developed a new prepreg — a carbon-fiber sheet pre-impregnated with matrix resin — that offers super-high-heat and...

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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...

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Articles
Aerospace

Using Polyimide In 3D Thin Film Multilayer Circuitry

Today, the cost and complexity of all platforms and systems in military and defense technologies are being challenged by the need for high functionality in smaller but less expensive...

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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...

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Briefs
Manufacturing & Prototyping

Fabrication of Carbon Nanotube Channels on Three- Dimensional Building Blocks

Single-wall carbon nanotubes (SWNTs) are the most attractive material in the fields of nanoscience and nanotechnology due to their chemical, physical, and...

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Briefs
Manufacturing & Prototyping

Fabrication of Novel Transparent PMMA Composites for Optical Tagging

The emerging threats caused by improvised explosive devices (IEDs) have drastically increased concerns about soldier survivability. The ability to identify “friend vs....

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Briefs
Materials

Temperature Effect on Drop-Weight Impact of Hybrid Woven Composites

The main idea of composite material is to combine different materials to produce a new material with performance unattainable by the individual constituents. It gives...

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Briefs
Materials

Biodegradable MEMS Based on Cellulose Paper

Electro-Active Paper(EAPap) has been recognized as a new smart material that can be used for sensors, actuators, biomimetic robots, and smart wallpapers. EAPap is made with cellulose paper by...

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Briefs
Materials

Fire Resistance of Geopolymer Concretes

Geopolymer concrete has been proposed as an alternative to Portland cement concrete in applications requiring high degrees of fire resistance, because the intrinsic chemistry of the geopolymer binder...

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Briefs
Manufacturing & Prototyping

Solution Deposition Methods for Carbon Nanotube Field-Effect Transistors

Extensive research has been done on carbon nanotube field-effect transistors (CNTFETs), which may revolutionize electronics. Single-walled carbon nano-tubes (SWNTs) act...

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Briefs
Materials

Barium Ferrite Materials for Microwave Circulators

Barium ferrite thick disks have been fabricated for incorporation in self-biased microwave devices. The process uses barium ferrite nanopowder mixed with epoxy. The mix is placed on alumina substrates to fabricate 500 μm thick disks of BaM to achieve good magnetic properties such as magnetic...

Briefs
Materials

Silicon Nanowires for Anodes of Rechargeable Li Power Cells

Silicon nanowires have been investigated as alternatives to the graphite heretofore widely used as an anode material in rechargeable lithium-ion power cells. The theoretical...

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Briefs
Materials

Improved Dielectric-Breakdown Property of POSS-Filled Epoxy

A n experimental study has shown that the AC short-term dielectric breakdown potential of material specimens consisting of polyhedral oligomeric silsesquioxane (POSS) nanoparticles...

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Briefs
Manufacturing & Prototyping

Fabrication of Lightweight Armored Doors for HMMWVs

A document describes a concept for fabricating lightweight armored doors for the Army’s high-mobility multipurpose wheeled vehicles (HMMWVs). Essentially, the concept is to reinforce high-hard (HH) steel armored doors used on some HMMWVs with a laminated, woven, high-tensile-strength...

Briefs
Materials

Innovative Processes Strengthen F-15E Vertical Stabilizers

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...

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