Articles tagged with Composite Materials
Researchers have developed composite fibers containing varying percentages of carbon nanotubes, which can double stiffness, reduce shrinkage by 50%, and improve solvent resistance. Breaking up nanotube bundles could make these materials more accessible for commercial products.
A team of physicists and engineers created metamaterials that respond magnetically to terahertz radiation, extending their properties to the terahertz range. This discovery has the potential to enable new applications in areas like weather guidance, security, and biomedical imaging.
The Office of Naval Research is developing new materials to increase the survivability of future Marine Corps vehicles. Six contractors have developed new material concepts, with three selected for Phase 2 contracts. Lightweight high-strength composite materials and embedded sensors will be integrated into a vehicle demonstrator.
Researchers are developing a sensor to monitor carbon-carbon composite materials in structures. The team uses ultrasound to identify degradation mechanisms and contamination effects, enabling them to quantify the impact on material integrity. They expect to complete a prototype sensor system by 2003.
New porous materials show photoluminescence, ion exchange and gas sorption, having large surface area and uniform pore sizes. They have potential applications in electrochemical sensors, photocatalysts, solid electrolytes for batteries and gas separation.
Researchers at Princeton University have developed a mathematical system to design composite materials that perform two functions simultaneously. The approach uses computer calculations to find the optimal structure, which can help optimize properties such as heat and electricity conductivity.
A team of researchers from Purdue University and their partners have developed a new manufacturing approach to produce carbon-carbon composites at lower cost. The robotic system uses computer control to precisely deposit carbon fibers, resulting in better part quality and reduced production time.
Virginia Tech researchers are studying xylan, the natural glue in wood, to develop new materials. They aim to understand the hierarchy of components assembled in composite materials by mimicking nature's structure at the nanoscale.
Researchers study composite materials made from small trees, finding they can be as strong or even stronger than solid wood due to uniform properties and improved durability. The team investigates molecular adhesion and chemistry under simulated conditions to enhance durability.
Researchers at Michigan State University are developing biocomposites using plant-based materials and sustainable plastic alternatives. These innovative materials have the potential to reduce environmental impact, cost, and production energy while maintaining performance and competitiveness.
Researchers have developed a dental composite that can remineralize small cavities and prevent demineralization. The material, containing amorphous calcium phosphate, has potential applications in orthodontic adhesives, dental fillings, root canal therapy, and bone repair.
Researchers are developing a new sandwich structure made from lightweight honeycomb core and curved composite panels, which can contribute to faster boats and fuel-efficient airliners. The key attribute of the material is its light weight, resulting from the honeycomb-like design of the inner core.
A new scanning device enables researchers to examine internal characteristics of composite engine parts as they are mended, improving use of composite materials. Initial experiments showed that surface integrity can belie internal damage in graphite fibre-PEEK composites.
Scientists can now examine a material's surface using specially constructed probes, identifying contaminants and component parts. The probes also measure thermal properties, conductivity, and topography to provide insights into material behavior.
A new book on composite materials has been published by Virginia Tech professor Michael W. Hyer, focusing on the mechanics aspects of fiber-reinforced composite materials. The book provides a comprehensive approach to understanding the stresses due to applied deformations, loads, and temperature changes.
The Federal Aviation Administration (FAA) has certified a new aircraft repair technique, using a bonded composite doubler, for Delta Airlines' L-1011. The patch reinforces the plane's right mid-section access door and has proven to be effective in reducing maintenance tasks.
Researchers at Oregon State University have discovered a new compound with unique properties that could be used in various applications. The compound, zirconium tungstate, has been found to behave under high pressures and has potential uses in electronics, optics and dental care.