GE와오픈플랫폼 커뮤니티인 GrabCAD는 6톤에 달하는 항공기 엔진을 옮기는데 사용되는 브라켓 공모전을 개최했다. 전세계에서 700개가 넘는 아이디어가 제출되었고 인도네시아 출신의 M 아리 쿠르니아완(M Arie Kurniawan)이 디자인한 브라켓이 최우수 작품으로 채택되었다. GE는 이미 3D 프린팅 기술을 이용하여 제트엔진 연료노즐을 생산한다.
These two jet engine brackets made from a titanium alloy came out of a 3D printer at GE Global Research last December . They were among the 10 finalists in GE’s global 3D printing challenge.
GE and the open engineering platform GrabCAD invited the maker community to design a stronger but lighter bracket used for moving jet engines that weigh nearly 13,000 pounds. The company received over 700 entries from all over the world.
GE engineers strapped each of the 10 shortlisted brackets to an MTS servo-hydraulic testing machine and exposed it to axial loads as high as 9,500 pounds.
Only one of the brackets failed. The rest advanced to a torsional test, where they were exposed to torque of 5,000 inch-pounds.
A bracket designed by M Arie Kurniawan, an engineer from Indonesia, had the best combination of stiffness and light weight. The original bracket weighed 2,033 grams (4.48 pounds), but Kurniawan was able to reduce its weight by nearly 84 percent to just 327 grams (0.72 pounds).
Kurniawan won $7,000 in prize money. GE and GrabCAD also selected seven other design winners who will divide the balance of the $20,000 prize pool.
GE already started testing jet engines with 3D printed parts in Ohio and Winnipeg, Canada.