From the Sector

Carbitex – a leader in flexible carbon fiber composites focused on footwear, travel, and accessories – announces the appointment of Filippo Sartor to Vice President of Global Sales and Sam Gardner to the role of Vice President of Engineering and Operations. After a restructuring of manufacturing operations and the return of Carbitex founder, Junus Khan, as company president in 2023, the brand welcomes two strategic hires to catalyze the next phase of the leading materials brand.

With over 20 years in the footwear industry, including nearly 11 years as the Global Senior Sales Manager at JV International, official worldwide licensee for Michelin Soles, Sartor brings high level sales expertise within performance footwear and material innovation. With extensive focus on building new business in the US and Far East, and based in Milan, Italy, Sartor is uniquely positioned to help propel Carbitex globally into the next chapter.

Gardner, based in Renton, Washington, will manage product development and manufacturing at Carbitex. With time at Square One Distribution - a long-time Carbitex brand partner in the wake and waterski segment - and most recently as VP for Union Aquaparks, Gardner has considerable experience designing new products and managing sourcing, logistics, and supply chain. His background will help Carbitex strengthen both factory and brand partner relations and push product innovation.

These recent hires position Carbitex to better serve strategic brand partners, achieve forecasted growth in the short and long term, and expand global market presence.

• ITA Master's graduate wins Hanns Voith Foundation Award 2023

In his Master's thesis, Flávio André Marter Diniz, a graduate of the Institut für Textiltechnik of RWTH Aachen University (ITA), developed ultra-thin polyethylene (PE) carbon fibres with a filament diameter 2-3 times smaller than usual. In addition, the use of PE-based precursors will make it possible to reduce the price of carbon fibres by 50 per cent in the future, thus opening up a wide range of other possible applications in key industries such as wind power, aerospace and automotive. For this groundbreaking development, Marter Diniz was awarded the Hanns Voith Prize with the Hanns Voith Foundation Award in the category "New Materials". The prize is endowed with € 5,000 in prize money.

Flávio André Marter Diniz won the prize in the category "New Materials" for his master thesis entitled "Investigation of the stabilisation and carbonisation process for the production of ultra-thin polyethylene-based carbon fibres".

The use of carbon fibres in highly stressed lightweight construction solutions, such as today's growth applications of wind turbines or pressure tanks, has become indispensable due to their excellent mechanical properties and low density. High manufacturing costs of conventional PAN precursor-based carbon fibres make the material very cost-intensive. In addition, it is not sufficiently available. New manufacturing approaches that develop alternative raw materials and manufacturing processes can be a key and growth engine for further industrial composites applications.

The aim of the work was to develop a new and cost-effective manufacturing process for high-quality ultra-thin carbon fibres using a polyethylene precursor. For this purpose, the sulphonisation process, which is time-consuming today, was to be significantly shortened. As a result, Mr. Marter Diniz produced novel ultra-thin polyethylenebased carbon fibres with a filament diameter < 3 μm with an excellent surface quality of the fibres without detectable structural defects. The fibre diameter is 2-3 times smaller than that of conventional PANbased CF. This provides the basis for mechanically high-quality material properties. At the same time, Mr. Marter Diniz was able to reduce the sulphonisation time by 25 percent. The developed material and technology set important milestones on the way to cheaper carbon fibres. With PE-based precursors, the price of CF can be reduced by 50 percent compared to conventional PAN-based CF.  

A total of five other young scientists were awarded in six categories (Drive Technology, Innovation & Technology/Artificial Intelligence, New Materials, Paper, Hydropower and Economic Sciences. This year, for the 10th time, the Hanns Voith Foundation awarded the Hanns Voith Prize to outstanding young scientists.

• Formula 1 cars will be cheaper in future

Carbon is the stuff Formula 1 cars are made of, at least the bodywork. But until now, carbon has been expensive. It can be produced more cheaply and efficiently if artificial intelligence monitors the production processes. A camera system combined with artificial intelligence automatically detects defects in the production of carbon fibres. This makes expensive manual inspection of the carbon fibres obsolete and the production price of the carbon fibre can be reduced in the long term.

For this idea, the young engineer Deniz Sinan Yesilyurt received the second prize of the "Digitalisation in Mechanical Engineering" Young Talent Award on 6 December.

Carbon fibres are sought after because of their good properties. They are very light - they weigh up to 50 percent less than aluminium. The combination of low weight and good mechanical properties offers many advantages. Especially in times of the energy transition, lightweight materials like carbon are more relevant than ever before. At the same time, carbon fibres are as resistant to external stresses as metals. However, achieving these good properties of carbon fibres is very complex.

Up to 300 individual fibre strands - bundles of individual fibres - have to be monitored simultaneously during production. If carbon fibres tear, it costs time and money to sort out the damaged fibres. This is just one example of various defects that can occur in the fibres during production.

Therefore, Deniz Sinan Yesilyurt attached a camera to the carbon fibre line that takes pictures of various fibre defects during production and collects them in a database. The artificial intelligence in the camera's information technology system evaluates the fibre defects by assigning the images to predefined reference defects. In doing so, it recognises various fibre defects with a classification accuracy of 99 per cent. The process can also be used in other areas that produce chemical fibres.

Deniz Sinan Yesilyurt received the prize from the German Engineering Federation (VDMA) in Frankfurt am Main, Germany. He is a Bachelor's graduate at the Institut für Textiltechnik (ITA) of RWTH Aachen University. The full title of his bachelor's thesis is: "Development of a Kl-supported process monitoring using machine learning to detect fibre damage in the stabilisation process". The VDMA awarded the prize to a total of four theses from different universities. The prize is awarded for outstanding theses and was offered in Germany, Austria and Switzerland.

Michelman, a global developer and manufacturer of environmentally friendly advanced materials, including sizing for glass and carbon fiber, has invested in the FIMATEST adhesion measurement system to ensure their sizing solutions continue to contribute to enhanced performance of composite parts.

“As we continue our vision to be the interface expert, it is critical to have analytical equipment that can efficiently fine-tune our sizing to optimize adhesion properties. This is one of the key performance attributes we provide our customers, and the fact that the Textechno FIMATEST system works according to the fiber pull-out principle makes it extremely valuable”, explains Steve Bassetti, Michelman’s Global Marketing Director for Industrial Manufacturing. “We have utilized this equipment in our development lab for almost two years, and it is suited for any fiber-matrix combination we have developed. It has been helpful that Textechno developed these instruments because they are, and will continue to be, a great benefit to the entire Composites industry. We look forward to supporting Textechno in establishing more standardization for the Industry regarding fiber-matrix-adhesion and processing properties.“

Dr. Ulrich Mörschel, CEO of Textechno, added: “We are proud that Michelman, the industry’s leading interface expert, invested in our testing system.” Bassetti further elaborated on the system’s benefits: “For Michelman’s customers, this equipment has allowed for great collaboration, increased screening of sizing concepts, and a more robust and efficient product development process.”