Combat Vehicle Weight Reduction by Materials Substitution Proceedings of a Workshop (2018) / Chapter Skim
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Topic 2: Structure and Automotive Issues
Topic 2: Structure and Automotive Issues
Pages 15-25
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From page 15... ...
He referred to a 1982 NRC National Materials Advisory Board study, Materials for Lightweight Military Combat Vehicles. The study stated that "maximum benefits from the use 15
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From page 16... ...
2 National Research Council, Materials Research Agenda for the Automobile and Aircraft Industries, National Academy Press, Washington, D.C., 1993. 3 Center for Automotive Research, Automotive Technology: Greener Products, Changing Skills, Lightweight Materials and Forming Report, May 2011.
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From page 17... ...
He said the ALMMII priority metal classes and alloys include advanced high-strength steels, titanium, aluminum, and magnesium. He noted that the technology development needs have been grouped into six pillars: melt processing; powder processing; thermo-mechanical processing; low-cost, agile tooling; coatings; and joining and assembly.
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From page 18... ...
THE AEROSPACE INDUSTRY AND ADVANCED MATERIALS Dianne Chong, Boeing Company Dianne Chong of Boeing Company spoke about the joining of dissimilar mate rials and manufacturing constraints during design. In particular, she discussed Boeing's recent work on the 787 airliner, which uses a large amount of composite materials and represents a major new development project for the company.
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From page 19... ...
Chong explained that the use of composites has enabled a number of changes in the cabin to improve the passenger flying experience. These include bigger windows, better air quality, lower cabin altitude, and higher humidity, among o thers.
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ADVANCED MANUFACTURING AND ADDITIVE MANUFACTURING Slade Gardner, Lockheed Martin Corporation Slade Gardner of Lockheed Martin spoke about his company's work with advanced manufacturing, particularly additive manufacturing (often referred to as "3D printing")
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From page 21... ...
Gardner explained that Lockheed Martin managed to achieve an 80 percent recurring cost savings relative to the assembled steel structure it replaced and 75 percent weight savings, or approximately 120 pounds per assembly. The company has identified many candidates in ground vehicles that can be replaced with APEX.
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From page 22... ...
FDM has been used for rapid prototyping equipment, as a rapid prototyping method, for structures such as nose cones and tails for unmanned aerial vehicles, and engine inlets and ducts. He said that the company is seeking to extend the technology with the development of new materials.
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From page 23... ...
This includes superplastic and hot metal gas forming, metal injection molding, rapid solidification and extrusion, and centrifugal casting. Superplastic and hot 6 S
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From page 24... ...
Nyberg also discussed rapid solidification and extrusion, which has applica tions in high strength and lightweight alloys, as well as advanced battery and magnet applications. He said the benefits include bulk production capability, minimal scrap, and the ability to produce unique microstructures.
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From page 25... ...
These include less than 50 percent current weight, cost less than 90 percent of current door-in-white,8 and greater than 50 percent performance improvement. Nyberg concluded that future ground and air vehicles will have to integrate armor protection into the construction materials.
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