manufacturing, where the first 100 parts are built and certified, and subsequently 2 of every 100 parts are certified. It was noted that that style of certification does not make sense if the process to create individualized parts is certified.

Ms. Swink asked whether new materials would be needed for additive manufacturing. She also asked if there is a challenge in that the manufacturing and design communities are not well integrated. Other participants agreed that materials in production are not specifically tailored to additive manufacturing and may be somewhat deficient. Further, designers are not much involved in the materials process even though it is they who should be providing specifications to the materials scientists.

Surface finish was mentioned as an area where technical advances could be made.

Ms. Swink pointed out that the United States lacks an industrial base for additive manufacturing machine systems and for some materials supply to the DOD community and wondered if this posed a problem. Some participants pointed out that part production for the machinery is done in the United States, although the machines may come from overseas; since DOD is a relatively minor player in this area of additive manufacturing, this scenario is unlikely to change. There is an industrial base for some materials feedstock in the United States; nonetheless, some niche applications may have a hard time sourcing their material in this country.

The National Academies | 500 Fifth St. N.W. | Washington, D.C. 20001
Copyright © National Academy of Sciences. All rights reserved.
Terms of Use and Privacy Statement