Carbon fiber — by far the most widely used fiber in high-performance applications — is produced from a variety of precursors, including polyacrylonitrile (PAN), rayon and pitch. The precursor fibers are heated and stretched to create the high-strength fibers. The first high-performance carbon fibers on the market were made from rayon precursor. PAN- and pitch-based fiber have replaced rayon-based fiber in most applications, but the latter’s “dogbone” cross-section often makes it the fiber of choice for carbon/carbon (C/C) composites. PAN-based carbon fibers are the most versatile and widely used. They offer an amazing range of properties, including excellent strength — to 1,000 ksi — and high stiffness. Pitch fibers, made from petroleum or coal tar pitches, have high to extremely high stiffness and low to negative axial CTE. Their CTE properties are especially useful in spacecraft applications that require thermal management, such as electronic instrumentation housings. Although they are stronger than glass or aramid fibers, carbon fibers are not only less impact-resistant but also can experience galvanic corrosion in contact with metal. Fabricators overcome the latter problem by using a barrier material or veil ply — often fiberglass/epoxy — during laminate layup.
CGTech helps demystify the process of programming automated composite machinery by introducing the key components of machine independent off-line programming software.
Powerhouse manufacturer’s high-pressure compression molding process forms prepregged CFRP components with forged-metal properties.
Read complete article
ELG Carbon Fibre Ltd. (Coseley, West Midlands, UK), a specialist in recycled carbon fiber materials, will present a paper at CAMX, titled “Recycling Carbon Fibre – Addressing the Issues of High-Volume Supply.”777X: Bigger-than-expected carbon fiber impact CompositesWorld
Guest blogger Chris Red, principle of Composites Forecasts & Consulting, has crunched the numbers and reports that Boeing's new 777X is on pace to consume substantially more composite materials than initially anticipated.Newly formed LeMond Composites signs agreement with ORNL CompositesWorld
The company's “breakthrough” process will reportedly reduce production costs by more than 50% relative to the lowest cost industrial grade carbon fiber.Solvay doubles carbon fiber manufacturing capacity in the U.S. CompositesWorld
The company added a new carbon fiber line to its facility in South Carolina.Carbon fiber shoe insoles: a new edge in sports? CompositesWorld
From super strict diets (looking at you, Tom Brady) to doing three-a-days, five days a week (LeBron 'King' James), athletes are always looking for an edge in sports.