Browse Topic: Additive manufacturing
Researchers have pioneered a 3D printing method that grows metals and ceramics inside a water-based gel, resulting in exceptionally dense, yet intricate constructions for next-generation biomedical technologies.
In recent decades, vehicles have evolved from mere means of individual transportation to something much more meaningful. They are no longer mere metal bodies housing combustion engines, but now play a complex role in people’s lives, encompassing emotional, aesthetic, and symbolic aspects. These factors influence consumers’ choice of a model, brand, or version. Based on a literature review of the global automotive sector, including brand literature, scientific articles, and current automotive news, this study aims to analyze the main design and positioning trends adopted by large multinationals in the market. Using the Jeep Renegade as a case study, three design proposals for the model are illustrated and presented as follows: a “facelift,” a “new generation,” and a “concept vehicle.” Next, these design trends are conceptualized, initially illustrating the respective sketches and drafts, which take into account market positioning and the different options for the models presented in
This specification covers preforms fabricated up through 22.0 inches (560 mm), inclusive, in deposition width thickness (see 2.4) using a wire-fed plasma arc directed energy deposition (PA-DED) additive-manufacturing process on a Ti-6Al-4V substrate that are subjected to post-deposition stress-relief heat treatment. If required by the cognizant engineering organization (CEO), preforms may require subsequent machining to meet requirements for their intended final part application.
NASA has developed a novel approach for macroscale biomaterial production by combining synthetic biology with 3D printing. Cells are biologically engineered to deposit desired materials, such as proteins or metals, derived from locally available resources. The bioengineered cells build different materials in a specified 3D pattern to produce novel microstructures with precise molecular composition, thickness, print pattern, and shape. Scaffolds and reagents can be used for further control over material product. This innovation provides modern design and fabrication techniques for custom-designed organic or organic-inorganic composite biomaterials produced from limited resources.
RMIT University Melbourne, Australia
Innovators at NASA Johnson Space Center have developed additively manufactured thermal protection system (AMTPS) comprised of two printable heat shield material formulations. These formulations are directly applied by 3D printer or other robotic extrusion system and bonded to a spacecraft to devise a heat shield suitable for atmospheric entry. This technology could significantly decrease heat shield or thermal protection system (TPS) fabrication cost and time.
Nylon, Teflon, Kevlar. These are just a few familiar polymers — large-molecule chemical compounds — that have changed the world. From Teflon-coated frying pans to 3D printing, polymers are vital to creating the systems that make the world function better.
Researchers have developed a smart, self-powered magnetoelastic pen that could help detect early signs of Parkinson’s by analyzing a person’s handwriting. The highly sensitive diagnostic pen features a soft, silicon magnetoelastic tip and ferrofluid ink — a special liquid containing tiny magnetic particles.
A research team at RCSI University of Medicine and Health Sciences has developed a 3D-printed implant to deliver electrical stimulation to injured areas of the spinal cord offering a potential new route to repair nerve damage. Details of the 3D-printed implant and how it performs in lab experiments have been published in the journal Advanced Science.
ETH Zurich Zurich, Switzerland
Celebrating its 35th year, the National Aerospace Defense Contractors Accreditation Program (Nadcap) continues to advance quality assurance and regulatory compliance for aviation, defense, and space OEMs and suppliers. This article summarizes how Nadcap accreditation works, its benefits for manufacturers, and its role in expanding additive manufacturing through industry-wide consensus. The Nadcap program was first established in 1990 by a small group of aerospace and defense OEMs. Their goal was to create an accreditation initiative that provides a common approach to auditing the manufacturing and production processes used by companies supplying parts, components, structures, and services to major aerospace and defense OEMs. This foundation set the stage for Nadcap's continued focus on quality assurance and regulatory compliance in the industry.
The usage of additively manufactured (AM) notched components for fatigue-critical applications presents non-trivial challenges, such as the ubiquitous presence of volumetric defects in AM parts. Volumetric defects accelerate fatigue crack nucleation, impact short crack growth, and are near-impossible to fully eliminate. This study investigated the synergistic effects of volumetric defects and notch geometry on the fatigue behavior of L-PBF AlSi10Mg and 17-4 PH SS notched specimens. The criticality of the defects on fatigue behavior is investigated using a non-destructive evaluation technique. A classical linear elastic fracture mechanics (LEFM) approach was modified and used to quantify the effects of several factors including notch geometry, defects’ size, and location, on the fatigue crack initiation behavior. The modified LEFM approach utilized X-ray computed tomography data and linear elastic finite element analysis of local stresses in different notch geometries; to calculate and
After 3D printing a habitat designed for Mars and working with NASA on print material made from synthetic Moon dust, AI SpaceFactory Inc. has commercialized two separate 3D printers. The Secaucus, NJ-based company’s latest offering, Starforge, is a large-capacity 3D printer that uses innovative print material inspired by SpaceFactory’s work with NASA’s Kennedy Space Center in Florida under an Announcement of Collaboration Opportunity agreement.
Additive manufacturing (AM) is no longer just an alternative to traditional manufacturing methods; it's a transformative shift in how parts are designed, built, and qualified. With AM, engineers can create complex internal geometries, lattice structures, and multi-functional components that simply were not possible with traditional manufacturing methods. The design freedom unlocked by AM is advantageous in the next generation of naval innovation, particularly as shipbuilding programs push to meet ambitious construction goals and improve warship readiness. For suppliers, embracing AM isn't just about swapping out tools; it's about rethinking the entire design process. Working to understand and prepare for AM-driven design and qualification changes is necessary to remain competitive in future U.S. Navy shipbuilding programs. This article will explain how new standards are driving qualification, supporting U.S. Navy construction goals and fleet readiness.
MIT researchers have used 3D printing to produce self-heating microfluidic devices, demonstrating a technique which could someday be used to rapidly create cheap, yet accurate, tools to detect a host of diseases.
Bosch bolstered its 3D printing capabilities when it added a new metal 3D printer at its Nuremberg, Germany, plant earlier this year. The NXG XII 600 metal 3D printer from Nikon SLM Solutions met the supplier's need - the need for speed - as well as the non-Top Gun-related precision, flexibility and energy efficiency when manufacturing complex metal parts for its in-house and third-party customers. The Nuremberg plant invested nearly six million euros in the center, including the purchase and installation of the new metal 3D printer. Bosch claims to be the first Tier 1 automotive supplier in Europe to have a facility in this performance class.
Imagine a robot that can walk, without electronics, and only with the addition of a cartridge of compressed gas, right off the 3D printer. It can also be printed in one go, from one material.
By combining topology optimization and additive manufacturing, a team of University of Wisconsin-Madison engineers created a twisty high-temperature heat exchanger that outperformed a traditional straight channel design in heat transfer, power density and effectiveness.
3D Systems Rockhill, SC
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