From the Sector

The kick-off meeting for the "Trends and Design Factors for Hydrogen Pressure Vessels" project, recently held at AZL Aachen GmbH, was a successful event, bringing together more than 37 experts in the field of composite technologies. This event laid a solid foundation for the Joint Partner Project, which currently comprises a consortium of 20 renowned companies from across the composite pressure vessel value chain: Ascend Performance Materials, C evotec GmbH, Chongqing Polycomp International Corp. (CPIC), Conbility GmbH, Elkamet Kunststofftechnik GmbH, F.A. Kümpers GmbH & Co. KG, f loteks plastik sanayi ticaret a.s., Formosa Plastics Corporation, Heraeus Noblelight GmbH, Huntsman Advanced Materials, Kaneka Belgium NV, Laserline GmbH, Mitsui Chemicals Europe GmbH, Plastik Omnium, Rassini Europe GmbH, Robert Bosch GmbH, Swancor Holding Co. Ltd. Ltd., TECNALIA, Toyota Motor Europe NV/SA, Tünkers do Brasil Ltda.

The project follows AZL´s well proven approach of a Joint Partner Project, aiming to provide technology and market insights as well as benchmarking of different material and production setups in combination with connecting experts along the value chain.

The kick-off meeting not only served as a platform to foster new contacts and get informed about the expertise and interests of the consortium members in the field of hydrogen pressure vessels, but also laid the groundwork for steering the focus of the upc oming project's ambitious phases. As a basis for the interactive discussion session, AZL outlined the background, motivation and detailed work plan. The central issues of the dialogue were the primary objectives, the most pressing challenges, the contribut ion to competitiveness, and
the priorities that would best meet the expectations of the project partners.

Discussions covered regulatory issues, the evolving value chain and the supply and properties of key materials such as carbon and glass fibres and resins. The consortium defined investigations into different manufacturing technologies, assessing their matu rity and potential benefits. Design layouts, including liners, boss designs and winding patterns, were thoroughly considered, taking into account their implications for mobile and stationary storage. The group is also interested in cost effective testing m ethods and certification processes, as well as the prospects for recycling into continuous fibres and the use of sustainable materials. Insight was requested into future demand for hydrogen tanks, OEM needs and strategies, and technological developments to produce more economical tanks.

The meeting highlighted the importance of CAE designs for fibre patterns, software suitability and the application dependent use of thermoset and thermoplastic designs.

The first report meeting will also set the stage of the next project phase, which will be the creation of reference designs by AZL's engineering team. These designs will cover a range of pressure vessel configurations using a variety of materials and production concepts. The aim is to develop models that not only re flect current technological capabilities, but also provide deep insight into the cost analysis of different production technologies, their CO₂ footprint, recycling aspects and scalability.

AZL's project remains open to additional participants. Companies interested in joining this initiative are invited to contact Philipp Fröhlig.

The FoxCore founding team and the ITM at TU Dresden aim to usher in a new era for fastening solutions in lightweight construction with the start of the Exist research transfer project FoxCore. The project started on June 1, 2023, and will run until November 30, 2024, with support from the German Federal Ministry of Economics and Climate Protection (BMWK) and the European Social Fund (ESF).

The innovative company is to develop and offer new and customer-oriented fastening solutions for lightweight construction applications. Safety and performance of lightweight solutions in various industries are to be increased. FoxCore's objective is to take a leading role in fastening technology.

Daniel Weise, Philipp Schegner, Michael Vorhof and Cornelia Sennewald form the FoxCore team; they will work closely with the Institute of Textile Machinery and Textile High Performance Materials (ITM) at TU Dresden. Together, they will develop optimal manufacturing technologies and establish a widespread network of customers and suppliers.

Aachen - Warden Schijve, former Chief Scientist Composites at SABIC, recently joined the AZL engineering team in October. As Design Leader, he is further expanding the product and application development division of the service provider for business development and technology development in lightweight.

AZL Aachen GmbH supports companies along the entire value chain in implementing competitive lightweight technologies. "We develop component and production concepts for companies, including the analysis of costs and production-relevant KPIs. With our broad range of material and production technologies, we provide a comprehensive solution for the development and evaluation of products and identify the most suitable paths to implementation. Warden Schijve will use his many years of experience to support our partners in the efficient development, evaluation and implementation of component and production solutions through to market readiness," says Dr. Kai Fischer, Managing Partner of AZL Aachen GmbH.

From his 35 years in the composites industry with Fokker, DSM and SABIC, Warden Schijve brings a broad and deep expertise in structural design, plastics and composites, as well as processing technology.
Warden Schijve: “In my career I’ve always seen that it pays off to evaluate various different design concepts, which may use different materials or material combinations, to finally come to the most cost-competitive lightweight applications. Taking into account different manufacturing technologies right from the beginning can save a lot in later stages of component development. And this is what fascinates me about AZL and its eco-system: the available knowledge on a wide variation of process and production technologies, including cutting edge equipment, at both the AZL Tech Center, and the various institutes present in the total RWTH Aachen Campus.”

Dr. Michael Emonts, Managing Partner of AZL Aachen GmbH: "We are delighted that Warden Schijve, as a well-known face from the AZL community, will enrich us in developing lightweight applications, production systems and processes, identifying competitive technology optimizations through the analysis of markets and applications, and supporting our customers in the industrial implementation of the developed technologies."

Warden Schijve will also lead the project for a concept study for future battery casings based on composite-based multi-material systems. The AZL started the project in October together with 30 participating companies from the entire value chain to get an overview of existing component solutions, evaluate the advantages of a multi-material approach and develop a multi-material component design including a production concept for battery casings.

The two AZL Partners Conbility GmbH and Fraunhofer IPT, Aachen started their long-term cooperation for the further development and for the commercialization of Fraunhofer´s tape-placement and tape winding systems with in-situ-consolidation by the usage of laser or IR heat sources.

With this cooperation, the company Conbility GmbH makes 25 years of expertise in special machine development of tape placement systems of the Fraunhofer Institute for Production Technology IPT commercially available. Conbility offers two different tape processing systems available in different configurations.

The “PrePro 2D” machine system allows for the automated tailored tape placement of UD laminates and which can be used for subsequent thermoforming or as stiffening structures in injection molding processes. The machine comprises a rotating and translational table which is moved relatively to the applicator station. The table is scalable according to the requirements of customers. Standard table diameters are 1200 mm or 2000 mm. The applicator station can be equipped with a single or with multiple spool applicators. Because of the large process area, a 9 kW IR heater is used for the in-situ-consolidation process.  
Three in one: Three technologies included in one single modular system
Furthermore, the award-winning “PrePro 3D” tape placement and winding applicator is available as modular product with decentral control system (including closed-loop control of energy input into the processing zone) for the “plug-in” implementation in existing robot systems or machine systems by standard interfaces for the communication with the master control system. Conbility provides the single applicator as well as turn-key ready systems including the robot and handling systems.

Unique selling point of the PrePro 3D system is its multifunctional range of usage: it accomplishes laser-assisted thermoplastic tape placement, IR-assisted thermoset prepreg placement and dry fiber placement: Three technologies included in one single modular system.  

During the JEC World in Paris (March 6th – 8th 2018), Conbility GmbH will present its new “VCSEL Tape Placement and Winding Applicator” (Fig. 3), developed in cooperation with Fraunhofer IPT and Philips Photonics at the AZL Composites in Action area (Hall 5A, C55).

VCSEL Laser Systems as heat source for lower investment and process costs
This applicator uses an integrated VCSEL Laser System as heat source which has been developed by Philips Photonics. This tape placement and winding applicator can also be integrated as modular “plug-in” system into industrial jointed-arm and linear gantry robots in variable manufacturing cells. Using the new VCSEL Laser as heat source (VCSEL: Vertical-Cavity Surface Emitting Laser) leads to significant lower investment and process cost in comparison to other laser systems. Furthermore, the VCSEL laser system can accomplish controllable in-process adjustments of the laser-spot geometry as well as the intensity distribution within the spot size during the process (in-process control of laser-spot geometries and intensities) for the first time. The new system with 2 kW laser power and 10 separate emission zones which can be controlled separately will be shown at JEC World in Paris 2018 as new product of Conbility GmbH.