Direct digital manufacturing is making fast strides for low-volume applications requiring complex detail, but some significant issues remain. Design engineers require process verification, particularly for high-end parts. For example, the widespread adaption of closed-loop process controls about a dozen years ago provided verification that required process parameters in the injection molding process were being maintained. Direct digital manufacturing systems were originally developed by companies in the rapid prototyping business, where such requirements were not necessary. Parts were simply required for form and fit, and not so much for functional testing. There is often considerable process variation in the new additive fabrication systems being developed for manufacturing directly from digital files. Improvements will come, however, and the new systems are certainly worth a look in several situations, particularly those where there are constant design change orders.
Just in time for Earth Day, chemicals leader Bayer MaterialScience reported from the UTECH Europe 2015 polyurethane show on programs and applications using its materials to help reduce energy usage. The company also gave an update on its CO2-based PU as that eco-friendly material comes closer to production.
A slew of announcements about new materials and design concepts for transportation have come out of several trade shows focusing on plastics, aircraft interiors, heavy trucks, and automotive engineering. A few more announcements have come independent of any trade shows, maybe just because it's spring.
At the JEC Europe 2015 composites show in Paris last month, makers of composite materials, software, and process equipment showed off their latest innovations. This year's show saw some announcements related to automotive applications, but many of the improvements came in the world of aerospace.
The DuPont-sponsored Plastics Industry Trends survey shows engineers want improved performance in a broad range of plastics and better recycling technology. These concerns top even processing enhancements that improve productivity.
Plastics leader SABIC recently announced a global initiative to help its customers take advantage of additive manufacturing (AM) and also advance 3D printing (3DP) technologies in several application areas. The company's plans go way beyond materials, and also include design, processing, and part performance.
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