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Briefs Materials
Towards Sustainable Recycling of Epoxy-Based Polymers: Approaches and Challenges of Epoxy Biodegradation
Epoxy polymers are widely used in various industries. However, the disposal of epoxy polymers and composites thereof has become a significant concern due to their recalcitrant nature and the adverse environmental effects caused by traditional recycling methods.
Briefs Green Design & Manufacturing
Biobased Carbon Fibers and Thermosetting Resins for Use in DOD Composites Applications
The aim was to use renewable resources derived from plants and other sources to prepare high-performance carbon fiber and thermosetting matrix resins with high strength and high thermal resistance.
Articles Aerospace
Advancing Metrology at Mach Speed
Drone-mounted inspection tools are breaking barriers for the F-35.
Briefs Materials
Biobased Carbon Fibers and Thermosetting Resins for Use in DOD Composites Applications
Advanced bio-based fibers and high-performance thermosetting resins will help reduce the dependence of military composites on high-cost petroleum.
News Materials
Prodrive Process Expands Carbon Fiber’s Manufacturing Potential
Motorsport and advanced-engineering company Prodrive recently revealed what it confidently sees as a breakthrough process for recycling carbon fiber. It says the development...
Articles Manufacturing & Prototyping
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.
Briefs Aerospace
Multifunctional Shear Pressed CNT Sheets for Strain Sensing and Composite Joint Toughening
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...
Application Briefs Defense
Electrocoat Primer System
PPG Industries Pittsburgh, PA 412-434-3131 www.ppgaerospace.com PPG Industries’ aerospace coatings group has installed an electrocoat primer system at the US Coast Guard Aviation Logistics Center in Elizabeth City,...
Articles Materials
Infusing Lightweight Composite Structures
Liquid resin infusion (LRI) is a proven manufacturing technology for both small- and large-scale structures for which, in most cases, experience and limited prototype experimentation is sufficient to...
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
Fuzzy Fiber Sensors for Structural Composite Health Monitoring
The onset of local damage in structures, such as delamination, cracking, and fastener loosening, can often be difficult to detect and has long-term implications on the performance...
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...
Articles Aerospace
Advances in High-Frequency PCB Materials
Traditionally, RF/microwave printed circuit board applications were developed based on the needs that came out of the military market. Applications like radar and guidance systems were operating at...
Briefs Materials
Multifunctional Properties of Structural Gel Electrolytes
Due to the demand for more advanced and lightweight systems, multifunctional composite structures that can function as electrochemical energy converters, while bearing mechanical load, are in development. This research involves a materials-based approach in which each component of the system...
Briefs Manufacturing & Prototyping
Fabricating Biologically Inspired Artificial Haircell Sensors
As electronics packaging and equipment have decreased in size and weight, so have the potential dimensions of unmanned aircraft. Specifically, a classification of micro air vehicles...
Briefs Physical Sciences
Nanostructured Ferromagnetic-Wire/Insulator Composites
A research and development effort now in progress is focused on nano-structured ferromagnetic- wire/insulator composite materials to be used as the magnetic-core materials of sensors for...
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 Manufacturing & Prototyping
Improvements in Manufacturing BMI/Fiber Composites Using AFP
A program now in progress is dedicated to making improvements in automated fiber placement (AFP) for the manufacture of advanced composite-material (matrix/fiber) structural...
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
Aligned MWCNTs as Thermal Conductors in Adhesive Joints
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 Materials
Less-Polluting Resins for Molding Composite Structures
Liquid resins that are suitable for use in molding composite- material structural panels and that contain and emit smaller amounts of air-polluting volatile organic compounds than do...
Briefs Materials
Continuous Carbon Nanofibers for Structural Composites
A program of research has addressed key issues in the production of continuous carbon nanofibers and the utilization of carbon nanofibers as the reinforcing components in matrix/fiber...
Briefs Materials
High-Strain-Rate Tests of Epoxy/Aluminum-Powder Composites
Initial tests have been performed in a continuing experimental study to determine selected mechanical properties, at high strain rates, of an epoxy and of composite materials consisting...
Briefs Materials
High-Temperature Resins for Composite Materials
Improved, readily processable thermosetting polymer resins are being developed for use as matrix materials in composite-material structures in applications in which there are requirements for...
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...
Briefs Materials
Low-Water-Permeability Encapsulants for Acoustic Sensors
Afamily of improved encapsulating materials for protecting underwater acoustic sensors has been invented. These materials could also be used for encapsulation or protective coating of...
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