Hanyuda and JAXA collaborate for the use of CFRP in electric aircraft
At Nagano city, the Japanese company Hanyuda joined with the Japan Aerospace Exploration Agency (JAXA) in a project to research and develop a technology for the application of carbon fibre-reinforced plastics (CFRP) in electric aircraft. The partners are using the technology for the mass production of lightweight parts using the topology optimization method. They will try to establish basic technologies within one year, and find out manufacturing methods that anticipate the near future within three years.
Quest Corporation (Obuse town, Nagano prefecture) and Nagano Prefecture General Industrial Technology Center will also participate in the research and development work. They are thinking to apply this technology for an eVTOL (electric propulsion vertical take-off and landing aircraft) vehicle, which is expected to be developed for inter-city traffic. The eVTOL will be designed with new technology that makes the most of anisotropy while taking advantage of the light weight, high strength and high rigidity of CFRP. A preliminary investigation by simulation confirmed that weight can be reduced by up to 70% compared with the method of securing strength by laminating the entire CFRP.
Hanyuda, a manufacturer of autoclaves for CFRP moulding, is already equipped to design, mould and assemble CFRP parts. Quest Corporation develops and manufactures drones, and the Nagano Prefecture General Industrial Technology Center has topology optimization software.
The research and development agenda was adopted by JAXA’s Aeronautical Technology Innovation Challenge 2018 in cooperation with the Development Bank of Japan, and a commercialization study (feasibility study) has been conducted.
Mitani Sangyo and Kanazawa Institute of Technology: carbon fibre sheet R&D project reduces by half the time needed to repair bridges
Mitani Sangyo and Kanazawa Institute of Technology will embark on the research and development of new CFRP (carbon fibre-reinforced plastic) sheets for repairing and reinforcing old bridges. By applying a unique plasma irradiation technology to the sheet, high adhesiveness is achieved, thus halving repair time and reducing cost.
In bridge repair and reinforcement work, carbon fibre is usually coated with thermosetting resin and bonded. Since it is necessary to wait for the resin to harden, repairs often take time. The new CFRP sheet uses the joining technology for thermoplastic carbon fibre-reinforced plastic that Kanazawa Institute of Technology is working on. This technology facilitates repair and reinforcement by making the material adhesive through special plasma processing. Demand is expected to grow because the repair of ageing bridges is an issue of national scale in Japan.
The project was selected as a subsidized project in Ishikawa Prefecture and commercialized with the aim of selling the new sheets around 2024. The price is estimated to be around 120 USD per square metre. The company aims to sell more than 78 million USD worth to major construction engineering companies.
Sakuma Special Steel plans to sell recycled CF/resin composite materials in 2020
Sakuma Special Steel (Nagoya city), a major special steel trading company, will start selling the ReMax composite material based on resin and recycled carbon fibre (CF) in 2020. Recycled CF is expected to offer superior cost and environmental advantages compared to virgin CF, but there are very few practical examples at the mass production level in Japan.
The company established mass production and practical use by combining this recycled carbon fibre with resin materials, and exhibited for the first time at the 2nd Nagoya Automotive World Car Lightweight Technology Expo, last September. Sakuma Special Steel intends to meet the need for high strength and light weight that is expected to expand in a wide range of industrial fields.
Start-up from Hyogo prefecture develops CFRP recycling technology
Fuji Design (Hyogo prefecture, Ono City) is a Japanese company that develops composite materials. In 2021, the start-up will begin recycling advanced materials used in aircraft, for example. They will invest about 3,700,000 USD in the Ono city plant to establish a mass production facility that will efficiently produce recycled products from mill ends or waste. Compared to the current recycling technology, CO2 emissions will be reduced to a tenth.
The company developed a recycling technology for carbon fibre-reinforced plastics (CFRP). The demand for CFRP is increasing in the aerospace and automotive fields as these advanced materials offer advantages such as low weight and lower fuel consumption. But high production costs are a barrier limiting the use of CFRP to aircraft or luxury cars.
At the mass production facility, Fuji Design will produce recycled materials through combustion and cutting of the waste purchased from aircraft manufacturers. For the start-up, using these recycled products, compared to a CFRP produced first-hand, reduces costs to one third of the original price.
More information: www.fuji-d.jp – Read the original article
Technologies: Other Processing Method