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DMLS Warheads

By i3d

New Case Studies: Additive Manufacturing (DMLS) Optimization Warheads And Aircraft Wings

We have added two new case studies to our DMLS Resource Library.  Major David Liu and others at the Airforce Institute of Technology (AFIT) have published groundbreaking studies based on Additive Manufacturing (DMLS) optimization of aircraft wings and lattice-reinforced penetrative warheads.

Topology Optimization Of An Aircraft Wing

For the additive manufacturing industry and specifically DMLS aircraft printing, this is a very important study.  Here’s the summary from the white paper which can be found here in our library:

Topology optimization was conducted on a three-dimensional wing body in order to enhance structural performance and reduce overall weight of the wing. The optimization was conducted using commercial software on an aircraft wing with readily available schematics, allowing a stress and displacement analysis. Optimizations were accomplished with an objective of minimizing overall compliance while maintaining an overall design-space volume fraction of less than 30 percent. A complete wing segment was post processed and 3D printed. Future analysis involves the optimization of a complete wing body with comparison to the baseline structure. The resulting designs will be 3D printed and wind-tunnel tested for process verification. A design will also be manufactured using metallic additive manufacturing techniques as a proof of concept for future aircraft design. The final optimized solution is expected to provide a weight savings between 15 and 25 percent.

 

Topology Optimization of Additively-Manufactured, Lattice-Reinforced Penetrative Warheads

A second case study along with a great presentation by Captain Hayden K. Richards and Major David Liu discusses the groundbreaking effect of DMLS on lattice-reinforced warheads. Penetrative warheads, characterized by massive, strong, and tough solid cylindrical cases with ogive noses, are generally manufactured using traditional techniques such as subtractive fabrication processes. In these processes, material is removed from pre-formed solid masses to produce simple shapes.

Recently, the development of sophisticated additive manufacturing (AM) machines, known colloquially as 3D printers, has revolutionized the process of building metal parts.

Visit our library for access to these incredible studies which help to reinforce the growing use of DMLS in critical industries such as aerospace and firearms.

By Erin Stone

3D Printing Takes the Cost of Complexity to Zero

3D Printing Takes the Cost of Complexity to Zero

Whats is the definition of “game changer” for metals manufacturing? Direct Metal Laser Sintering (DMLS), a 3D printing process that eliminates binding agents and uses 400-1000 W lasers to melt micro powders together, layer by layer until a 3D CAD model of a part is built, is one of the 3D manufacturing processes that are the the epitome of “game changer” according to Hod Lipson or Cornell University.   Read more

By Erin Stone

Just How Small Can DMLS Print?

Just How Small Can DMLS Print?

3D metal printing is in its element when it comes to production parts at micro scales. While machine development is focusing on creating DMLS paltforms that can print parts over 14″, Direct Metal Laser Sintering (DMLS), current DMLS capabilities are perfect for small, complex parts. 3D printing enables i3D MFG™ to deliver integral tiny, complex parts in Aluminum, Titanium, Maraging Steel, Stainless Steel and Inconel to Aerospace, Prosthetics, Medical Devise, UAV/UAS, Rocket/Spacecraft, Oil & Gas, Firearms, and Recreational Gear industries. For the part shown, a .015″ (15 thousandths of an inch) high latticed geometry was grown in Maraging (tool) steel. Machining the tiny part out of such a tough metal was expensive and problematic. Since DMLS build parts from mirco powder layers, laser melted together one micro layer at a time, 3D printing precise micro geometries is not much more difficult than printing large bulky parts – in fact, the larger the mass on a DMLS machine, the greater the risk of delamination and failed builds.

DMLS Micro Parts in Production Quantities

Currently, DMLS can accurately and repeatably manufacture parts as small as .030″ in Aluminum and Inconel and .015″ in Stainless Steel, Maraging Steel and Titanium. Additionally, complex assemblies of small to medium-sized  parts can be printed as a single part, eliminating weld lines, gaskets and fasteners. With micro parts, this can be a huge savings in precision assembly labor. Combine that  with a cost effective means of manufacturing small, complex parts in ferrous and non-ferrous metals ranging from Aluminum that does not register on the HRC scale to Maraging Steel that can be heat treated to 54 HRC, and the design innovations are astounding. Exotic metals also become affordable because DMLS does not produce the 30-70% scrap that traditional machining operations might. Contact i3D™ to learn more about our DMLS, Wire EDM, 3D Scanning and Design-for-3D serv

i3DMFG Metals For Additive Manufacturing

By i3d

Oregon Welcomes i3D MFG™ 3D Metal Printing

Oregon Welcomes i3D MFG™ 3D Metal Printing

Why would a new small business opening in The Dalles, Oregon be newsworthy to Aerospace Manufacturing and Design Magazine? Aerospace is big in the Pacific Northwest and the UAV/UAS giant Insitu is located 20 minutes from i3D™ Manufacturing’s Direct Metal Laser Sintering (DMLS) factory. 3D metal printing has emerged as a critical component in aerospace, rocket, and UAV design and manufacturing, but until 2014, there were no Northwest DMLS service providers. Insitu, Boeing, and the like were forced to use services thousands of miles  away, reducing some of the lead time and cost advantages 3D printing is known for. Oregon is defined by innovation and i3D™’s 3D printing technology is at the forefront of advanced and additive manufacturing. DMLS moves 3D printing from the prototyping realm into true production parts manufacturing. DMLS parts are used in final assemblies by Boeing, Lockheed Martin, GE, etc. In addition to aerospace, i3D™ also provides parts for medical and dental device applications, firearms accessory manufacturers, the energy and recreational gear industries, and automotive parts users.

The Future of Manufacturing

In 2013, manufacturing accounted for 28% of Oregon’s economy, over $65 billion in output. So, its not surprising that the Portland Tribune and Portland Business Journal also featured i3D™ in their Summer 2014 publications. As opposed to traditional, or subtractive manufacturing where parts are carved out of billet, the additive manufacturing process starts with 20-40 micron layers of powdered metal and uses a laser to melt thousands of micro layers together, one layer at a time based on a 3D CAD model – adding material only where the model dictates.  The no-waste process enables parts to be built that cannot be traditionally manufactured, including complex geometries, lattice and honeycomb structures, conformal channels, and single part builds of multi-part assemblies. i3D™ prints stock metals including Titanium, Aluminum, Inconel, 15-5 and 17-4 Stainless Steel, and Maraging Tool Steel as well as custom powders created for specific customer applications. The Dalles has a long history of metal manufacturing and gave i3D™ a warm welcome to its community and the Columbia River Gorge region. Both The Dalles Chronicle and Gorge Technology Alliance celebrated i3D™’s headquarters locating in Oregon. 

By i3d

Additive Manufacturing for Firearms

Additive Manufacturing Helps Oregon Firearms Industry Stay Innovative

With big game hunting season winding down in Oregon, it seems appropriate to give a nod to our friends in the firearms industry. Oregon has a long and rich history in firearm accessory manufacturing. Its premier manufacturers epitomize innovation and quality – think Warne Scope Mounts, Nosler, Leupold, and Grovtec. These companies were born from Northwest outdoorsmen’s desire for quality products with superior performance. They’ve become household names today because of their focus and commitment to innovation.

Additive manufacturing, or 3D printing, is helping Oregon’s firearm industry stay a step ahead of its competition. Complex designs that are expensive or even impossible to traditionally manufacture can be 3D printed in metal using Direct Metal Laser Sintering (DMLS) offered by i3D MFG™ and other similar service bureaus. Custom part builds, rapid market launches, and small batch production are all cost effective mean of production using 3D manufacturing. Unlike previous 3D print technologies, DMLS does not use binding agents, therefore, parts near 100% density, and are comparable to machined and high quality cast parts. In fact, this past summer both the FBI and the USSOC commenced in firearms projects using DMLS.

Additive Manufacturing benefits for Firearms

Latticed geometries, conformal cooling lines, organic channels, and single part production of multiple part assemblies are common 3D design features. Since 3D manufacturing is a no-waste process, exotic metals offering superior strength and heat properties are cost effective. Titanium, Inconel, and Steel are the most widely produced DMLS metals in the firearms industry. Lead times with 3D printing allow firearm accessory manufacturers to reduce R&D and market launch to weeks or months compared to months and years. Multiple versions of a design can be 3D printed in the same build, allowing R&D version testing or custom production in days.

i3D™ is proud to be innovating along with Oregon’s industry leaders. Oregon’s proud tradition of recreational firearms and firearm accessory manufacturing will continue to grow and beat its competitive because of their forward thinking and adoption of next generation technology in product development. We hope all the hunters out there had a successful season!

DMLS Warheads
New Case Studies: Additive Manufacturing (DMLS) Optimization Warheads And Aircraft Wings
3D Printing Takes the Cost of Complexity to Zero
Just How Small Can DMLS Print?
i3DMFG Metals For Additive Manufacturing
Oregon Welcomes i3D MFG™ 3D Metal Printing
Additive Manufacturing for Firearms