Boeing is making another significant design change to the Dreamliner to accommodate yet another problem that had not been previously disclosed. Boeing ordered suspension of fuselage production at an Italian subcontractor in June when it became apparent small wrinkles were forming in the composite skin. Spokesperson Lori Gunter tells Design News: “We have designed a fix for the barrels that have already been built-a simple patch that is installed from the outside of the airplane. We are completing a permanent fix to the design that will accommodate the changes in the stringer without needing to install a patch-this basically consists of adding a few layers of composites in key areas of the fuselage.”
As reported in Design News, Boeing engineers are also redesigning the area where the wing mounts to the fuselage. The Dreamliner is already two years behind schedule.
Instead of sifting through huge amounts of technical data looking for answers to assembly problems, engineers can now benefit from 3M's new initiative -- 3M Assembly Solutions. The company has organized its wealth of adhesive and tape solutions into six typical application areas, making it easier to find the best products to solve their real-world assembly and bonding problems.
Many of the materials in this slideshow are resins or elastomers, plus reinforced materials, styrenics, and PLA masterbatches. Applications range from automotive and aerospace to industrial, consumer electronics and wearables, consumer goods, medical and healthcare, as well as sporting goods, and materials for protecting food and beverages.
Engineers trying to keep track of the ever-ballooning number of materials and machines for additive manufacturing and 3D printing now have some relief: a free searchable database with more than 350 machines and 450 different materials.
At JEC Europe Dow Automotive introduced a new ultra-fast, under-60-second molding cycle time for its commercial-grade VORAFORCE 5300 epoxy resin matrix for carbon composites. It's aimed at high-volume automotive manufacturing.
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