One of the big engineering questions with the Boeing Dreamliner was how to provide lightning strike protection in a plastic-bodied aircraft. Composites have up to 1,000 times less electrical conductivity than aluminum, increasing the potential for damage
The average airliner is struck by lightning once or twice a year. Boeing added conductive material to the composites to provide a pathway for lightning strikes. The added weight, especially on the wing where fuel is stored, was one of the factors that pushed the Dreamliner above its target weight.
The Dreamliner successfully endured its first lightning strike in a test flight last year. But Boeing is exploring a new materials’ solution to protect composite-bodied aircraft from lightning strikes, according to Boeing’s Andy Harber, who made the comment in a question-and-answer session following a presentation at AeroCon in Anaheim, CA last week. Harber, who is senior project manager-design engineering at Boeing, did not provide any specifics.
A new report from the National Institute of Standards and Technology (NIST) makes a start on developing control schemes, process measurements, and modeling and simulation methods for powder bed fusion additive manufacturing.
Although bio-based polymers face challenges from petroleum-based polymers, in certain markets they can displace the petro-based incumbents. Here are six new bio-based and renewable plastics for a variety of applications.
BASF has developed tools and initiatives to help engineers use more of its renewable materials in their designs, more effectively, as well as to build parts using them with more predictable performance.
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.
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