From the Sector

Hexcel, a global leader in advanced composites technologies, announces the successful maiden flight of a lightweight camera drone, developed using Hexcel HexPly® carbon fiber prepregs. The composite drone was developed by a team of students from the University of Applied Sciences Upper Austria in Wels with composite materials supplied by Hexcel Neumarkt in Austria.

A team of six students in the university’s lightweight construction and composite materials course was responsible for the complete design, engineering, and manufacture of the camera drone over a period of 18 months. Hexcel materials and optimization of the composite engineering enabled the team to reduce the composite structural mass by an impressive 42% compared to similar drones.

Hexcel Neumarkt was one of eight industrial partners supporting the university team throughout the project, providing all carbon fiber prepreg materials used for the drone’s landing gear as well as the fuselage. The ultra-lightweight 32g landing gear was laid up and cured in the press, whereas the fuselage was autoclave cured by the student team using Hexcel HexPly M901 and HexPly M78.1 prepreg resin systems with a combination of woven and unidirectional carbon fiber reinforcements.

With the development of Unmanned Aerial Vehicles (UAV) as a key emerging market and innovation space in the transportation sector, Hexcel’s collaboration with the University of Applied Sciences Upper Austria team not only creates an important link with the next generation of lightweight composite engineers but also highlights the weight saving and structural benefits of Hexcel composite material solutions.

"The massive weight saving achieved with their updated version of the camera drone is a fantastic achievement by the student team," said Michael Rabl, Dean of FH Wels of the Upper Austria University of Applied Sciences. "The joint study not only illustrates the wide range of complex and innovative composite techniques present in the drone sector but also presents the opportunities that exist for further development in the wider Urban Air Mobility (UAM) and aerospace composites markets.”

Hexcel congratulates the project team which includes Lukas Weninger, Karl-Heinz Schneider, Jakob Schlosser, Matthias Thon, Marla Unter, and Simone Hartl on an exceptional piece of lightweight composite design and thanks them for showcasing the contribution of Hexcel materials with a presentation and drone flight. Johanna Arndt, research and technology group leader at Hexcel Neumarkt, said, “It was a great pleasure to work with the team who were very cooperative and self-motivated to succeed. Watching the drone just fly around the Neumarkt plant was just great.”

Hexcel manufactures a complete range of carbon fibers, dry carbon UD tapes, specialty reinforcements, prepregs, and honeycomb core materials, providing customized manufacturing options for new UAM applications that combine aerospace reliability with the high-rate production required. Hexcel composite materials are the ideal solution for the lightest and most efficient cost-competitive transportation vehicles of the future.

Technologies with an excellent environmental performance throughout the entire product life cycle – that is what “Autoneum Pure.” stands for. In future, components that meet the highest standards in terms of sustainability and eco-friendliness can be identified at a glance under this label. This also includes the innovation “Mono-Liner” for wheelhouse outer liners.

As innovation leader in acoustic and thermal management, Autoneum continuously invests in the development and production of resource-saving components that make cars lighter and thus more climate-friendly. In view of an increasing sustainability awareness and the correspondingly greater information needs on environmentally-friendly vehicle components, the Company has now launched Autoneum Pure. The label determines particularly sustainable technologies, thereby guiding car manufacturers in product selection for future models.

Autoneum Pure is based on a comprehensive set of criteria assessing the sustainability performance of a product in all four phases of its life cycle: material procurement, production, use and end of life. For example, components with a high content of recyclable materials or those that achieve significant weight savings compared to comparable standard components qualify for the “Autoneum Pure.” label. Autoneum already offers various multifunctional technologies that meet the high standards for Autoneum Pure products: Ultra-Silent for underbody systems or battery undercovers, Di-Light for carpet systems, Prime-Light and IFP-R2 for inner dashes and floor insulators as well as Hybrid-Acoustics PET for e-motor encapsulations and engine-mounted parts, which was launched in fall 2019.

With Mono-Liner, the latest innovation for wheelhouse outer liners is also included in the Autoneum Pure portfolio. Among other things, the Mono-Liner-based components convince thanks to their lightweight construction, thereby contributing to lower vehicle weight with correspondingly less fuel consumption and emissions. The excellent life cycle assessment is also based on their particularly resource-saving manufacturing: Production cut offs of the components, which consist to a large extent of recycled PET fibers, can be processed into pellets and completely returned to the manufacturing process as fibers. An SUV and a crossover model from a US vehicle manufacturer already benefit from Mono-Liner wheelhouse outer liners.

Anahid Rickmann, Head of Corporate Communications & Responsibility, explains: “With Autoneum Pure we are the first automotive supplier to establish a sustainability label in the field of acoustic and thermal management. Autoneum Pure is part of the Company's Advance Sustainability  Strategy 2025 and sets industry standards in product communication.”

At the joint stand of the Aachen Centre for Integrative Lightweight Construction (AZL) in Hall 5A, booth D17, the Institut für Textiltechnik of RWTH Aachen University (ITA) will demonstrate its expertise in the field of glass fibres, preforms and textile concrete 12-14 March 2019 in Paris.
The exhibits come from various fields of application and address the automotive, aerospace and mechanical engineering sectors.

1. Innovative glass fibre research at ITA
   The newly constructed induction heated glass fibre production line enables increased flexibility in research. For the first time, glass fibres will be produced live at the ITA booth at JEC World. One of the innovations of the system is the inductively heated bushing. It features a flexible design and consists of a platinum/rhodium alloy (Pt/Rh20) for use in high-temperature glasses.
   The glass fibre production line was designed in such a way that new concepts and ideas can be tested quickly. The modular design allows a high flexibility, the induction system a significantly faster operability.
   Research and development projects can therefore be carried out faster and more cost-effectively.
    
2. DrapeCube - Forming of textile semi-finished products
   The DrapeCube offers a cost-effective design for the production of fibre preforms from textile semi-finished products. It is used in the production of preforms for prototypes and in small series and is suit-able for companies active in the production of fibre-reinforced plas-tics (FRP).
   In the production of FRP components, the preforming process de-fines a large part of the subsequent component costs. In small- and medium-sized enterprises, this process step is often still carried out manually. This results in high quality fluctuations and component prices. Especially in the case of highly stressed structural components, the fluctuation in quality leads to oversizing of the components.
   Thus, the lightweight construction potential of fiber-reinforced plastics is underused. One solution is offered by the stamp forming process adapted from the sheet metal forming industry for shaping rein-forcing textiles. The textile is inserted between two mould halves (male and female) and automatically formed. Due to high plant and tooling costs, this process is used almost exclusively in large-scale production.
   The ITA has developed the DrapeCube forming station which offers a cost-effective alternative and is able to completely reproduce the current state of the art for forming textile half branches. The process steps will be demonstrated in a video at the booth.
    
3. Carbon fibre reinforced plastic (CFRP) preform
   The CFRP preform consists of carbon multiaxial fabrics formed by expanded polystyrene (EPS) to optimise draping quality. Preforms of increased quality can be produced by gentle, textile-compatible forming with foam expansion. For the first time, foam expansion was used to form preforms in such a way that the draping quality is improved compared to classic stamp forming.
   The advantages of the CFRP preform lie in the savings in plant costs, as the investment is much lower. In addition, the proportion of waste is reduced because near-net-shape production is possible. In addition, rejects are reduced, as fewer faults occur in the textile.
    
4. Embroidered preform with integrated metal insert
   The 12k carbon fibre rovings are shaped into a preform using Tai-lored Fibre Placement (TFP) which is a technical embroidery pro-cess. For the further layer build-up, a fastener is not only integrated under the roving layers but also fixed by additional loops. The highly integrative preforming approach offers the possibility of reducing weight and process steps as well as increasing mechanical perfor-mance.
   Until now, inserts were glued or holes had to be drilled in the com-ponent. Bonded fasteners are limited by the adhesive surface. The bonding of fasteners into drilled holes results in high drill abrasion and thus high tool wear.
   The advantages of the embroidered preform with integrated metal fasteners are the reduction of scrap due to TFP preforming and the increase in the specific pull-out force. In addition, it is possible to automatize the production of integrative preforms. This makes the preform with integrated metal fasteners interesting for the automotive and aerospace industries.