NEDO's RD Program on Key Technology for Innovative Low-Cost and Lightweight Structures

摘要

Innovations for low-cost and light structures are required for new-generation, high-speed transport (aircraft, trains, ships) and other structures (bridges, etc.) to conserve resources and energy and protect the environment. Current structures are assemblies that have a high part count. Application of conventional technologies will have little effect for future light weight structures. Recent technological developments have given us hints for near-term future structures. This program covers three areas: (ⅰ) New design and manufacturing technologies for co-cured CFRP structures; (ⅱ) New precision casting and welding technologies for large-size metal structures; (ⅲ) Integration technologies for innovative light structures. The goal is to drastically and cost-effectively save weight and reduce the part count of cockpit and wing structures for civil aircraft. Advanced CFRP manufacturing technologies will be developed for parts having complicated forms, large-size structures, and new-type sandwich panels. In addition, advanced technologies such as thin, large-size precision casting, friction stir welding and super-plastic forming will be developed. Integration technologies for fastening technology between CFRP parts and metal alloy parts, 3-dimensional CAD and a structural work station will also be developed. This will contribute to the verification process of the above work for a commercial aircraft. This program commenced in summer 1999 as a five-year program.