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LLNL’s Accelerated Certification of Additively Manufactured Metals Project: Physical Understanding of the 3D Printing Process is Necessary to See Real Industrial Change

by • January 21, 2016 • No Comments

lab_logo_blue_rgb_When it comes to that epic third revolution in making that most experts have projected via 3D printing, there’s one primary stumbling block: individuals don’t like alter. It is one thing to manufacture a software update, switch vendors, or move a facility to another location–and that’s frequently traumatic enough–but accepting and instituting an entirely new system and way of considering pretty does not take place overnight, or actually over a few years–as industry experts are seeing in terms of additive making.

Often, these new ideas and technologies only aren’t instituted without repetitive convincing, educating, and validating. And while most of us see the amazing benefits being offered by 3D printing around the world in only of each sector, for those who are involved in making systemes that seem to be running only satisfactory with old traditional methods in place, they of course question why alter is necessary, why you should meddle with current perfection, and why you should fix a thing that…yada yada. The answer of course, is that in implementing 3D printing–and doing it now–a world of new innovation is opened, along with a long list of benefits ranging of amazing options in customization and higher high end, to shaving mega-bucks off the bottom line.

Wayne King, leader of the Lawrence Livermore National Laboratory’s Accelerated Certification of Additively Manufactured Metals Project, wants to light a fire under eachone. With the belief that it can take really a few time for widespread alter to sweep an industry, he and a team of researchers at LLNL are attempting to hustle things along a little faster, as indicated in their latest paper, titled “Laser Powder Bed Fusion Additive Manufacturing of Metals; Physics, Computational, and Materials Challenges.”

“We want to accelerate certification and qualification to take advantage of the flexibility that metal additive making gives us,” said King. “Ideally, our plants may like to create a part on Monday that can be qualified and, on the same machine on Tuesday, create a various part that can in addition be qualified.”


a) Typical rays during illumination of the perfect array b) Detail of ray trajectories

The researchers emphasize that 3D printing with metal and laser powder bed fusion is increasing exponentially, and the innovation is being utilized widely for prototyping. Companies of all sizes only don’t yet seem to have the confidence in the innovation required to manufacture the investment–and the leap–to via it for making worthwhile parts. Noting that education is key here, the researchers point out a deeper belief of the actual physics of what’s take placeing during 3D printing is required.

“It is generally accepted that this belief can be increasingly achieved through modeling and simulation,” says the LLNL team of researchers in their paper. “However, there are worthwhile physics, computational, and materials challenges stemming of the broad range of length and time scales and temperature ranges synonymous with the system.”

Their research reviews, assesses, and points out the challenges that lie ahead all but in attempting to get eachone on board with 3D printing, with a central point being that qualification of parts and uncertainty of the final high end of products serving as main issues in the lack of adopting 3D printing.

“A physical belief of the metal powder bed fusion system can provide insight into performance margins, uncertainties in those margins, and their sensitivities to system parameters. So, a physical belief of the system is an essential element of part qualification,” say the researchers. “Such an belief should in addition enable increased control of the system, that in turn improves the likelihood of making qualified parts.”


Scanning electron microscope image of stainless steel powder

The require for ways to simulate the system and demonstrate it via modeling is outlined, and the researchers say that this can be realized digitally. Within the paper they discuss a range of models that should assist engineers manufacture calculations regarding heat and stress and well as gaining an belief of what take places to metal during the 3D printing system, enabling them to find validation in the innovation and as a outcome, become confident in making complicated 3D printed parts for industry such as aerospace. The goal is for these systemes to indeed become part of a total transformation inside making pretty than being an exemption. Do you ponder this paper by the LLNL researchers can assist accelerate additive making practices? Discuss in the LLNL Researchers to Accelerate 3D Printing forum over at 3DPB.com.