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3D Printing a Wedding: Maker Saves Money and Incorporates Personality https://ift.tt/2U7C5jA Planning a wedding isn’t simple – especially these days, when everyone wants to do something different, something no one else has ever done before. Everyone wants to put their own personal touch on their weddings, making them a celebration of the unique personalities of the couple being married. Weddings are expensive enough as it is, so it’s especially tricky to come up with something truly different while not going into decades upon decades of debt. For Erin Winick at the MIT Technology Review, however, putting a unique spin on her wedding was also a way to save money. Winick is a huge fan of 3D printing and has two desktop printers of her own, which she used to 3D print everything for her wedding that she possibly could, including her headband, her bouquet and her bridesmaids’ bouquets, the reception table numbers, the cake topper and floral cake decorations, and the flower girl’s necklace.
She is extremely grateful to the maker community for being so open with sharing their designs; she took advantage of several model-sharing sources to create what she needed.
To give a little something back to the maker community that helped her 3D print her wedding, Winick uploaded her table numbers and remixed leaf design for her headband to Thingiverse. The bouquets were what took her the longest to 3D print, involving approximately 200 flowers printed from blue and glow in the dark filament. She worked on the bouquets after work and on weekends, spending more than 100 hours over the course of several months. Once all the flowers had been 3D printed, Winick attached them to styrofoam balls. She wisely decided not to throw her bouquet at the wedding reception, for fear of knocking someone out with “a big spiky plastic ball.” In total, Winick spent about $75 on all of the bouquets, which was impressive considering that a traditional bridal bouquet is about $150 and bridesmaids’ bouquets run about $75 each. Her friends and family were deeply impressed with her efforts, following her progress on Instagram and expressing their amazement at how well everything turned out. A quick search on Thingiverse shows that Winick isn’t the only one to think of saving money and adding personal touches to a wedding through 3D printing. There are numerous wedding-related models available on the site, including everything from cake toppers and centerpieces to the wedding rings themselves. The wedding industry is a bloated one that sucks up billions of dollars from people each year, so it’s refreshing to see more people turning away from that kind of rampant consumerism and using their own creativity and skill instead. That’s what the maker movement as a whole is about, after all – not only saving money but creating and doing for oneself.
Discuss this and other 3D printing topics at 3DPrintBoard.com or share your thoughts below. [Source/Images: MIT Technology Review]
Printing via 3DPrint.com | The Voice of 3D Printing / Additive Manufacturing https://3dprint.com November 30, 2018 at 04:42PM
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3D Printing Presentations, Exhibits, Networking, and More at Additive Manufacturing Strategies in Boston https://ift.tt/2ABv41r Last winter, experts in the fields of 3D printing, medicine, and dentistry gathered together to attend the first annual Additive Manufacturing Strategies Summit, titled “The Future of 3D Printing in Medicine and Dentistry.” The increasing amount of 3D printing applications in the medical and dental fields were covered during the event, which was so successful that 3DPrint.com and SmarTech Markets Publishing, the industry’s leading provider of market research reports and industry analysis, are co-hosting a second AMS summit this January. First things first: the 2019 AMS event, “The Future of 3D Printing in Medicine and Dentistry,” will be held in Boston, Massachusetts from January 29-31 at the Hynes Convention Center. In addition to general medical and dental applications for 3D printing, additional topics that will be covered at the show include prosthetics and wearables, 3D bioprinting, IP and legal, materials science, and venture capital and investing. This year, Ultimaker is going to be sponsoring the event. The 2018 event saw attendees from 10 countries and 30 different states, and I’d say we’re on track to do even better this second time around. In addition to a startup competition with a $15,000 cash investment from Asimov Ventures at stake, an exhibit floor, and two pre-conference workshops, over 30 speakers who are experts in academic, commercial, government, and practitioner organizations will be presenting at this peer-driven event. Just some of the many speakers who will be featured at this year’s AMS summit include:
AMS will feature two separate tracks – one for medical and a separate one for dental – and is meant for business attendees who are or will be using 3D printing in their enterprises. At this year’s event, attendees should expect to get more clarity on how intellectual property (IP) will impact the development of 3D printing, as well as gain insight on the potential 3D printing has for revenue in the medial and dentistry industries, as SmarTech analysts will be presenting several sessions complete with current forecasts of revenue generation and penetration. The event will also teach attendees how 3D printing is transforming procedures, and disrupting the traditional supply chains, at doctor and dental offices, hospitals, and labs. Attendees will learn what specific markets that 3D bioprinting firms will be making money in, along with the products that will likely succeed for many years to come. In addition, sessions at the event will provide attendees with a better understanding of the many regulatory requirements that affect 3D printing in the medical and dental fields. Exhibitors include TRUMPF, Structo, and Arfona, among others, and attendees will have several valuable opportunities to network with these exhibitors, along with other people attending the event, during meals, coffee breaks, and at the cocktail hour that will be held in the exhibit hall before the Startup Showdown at 6:15 pm on January 30th. Various levels of registration for this can’t-miss event are still ongoing, and if you register for the 2019 AMS summit by December 13th, you can save 35%. Discuss this event and other 3D printing topics at 3DPrintBoard.com or share your thoughts below. Printing via 3DPrint.com | The Voice of 3D Printing / Additive Manufacturing https://3dprint.com November 30, 2018 at 04:42PM
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Researchers Develop Tough Hydrogels for 3D Printing Applications in Repairing Load-Bearing Soft Tissues https://ift.tt/2U1O3uP The water-swollen polymer networks we know as hydrogels have many applications in the biomedical industry, but in order to use them to repair and regenerate load-bearing soft tissues, such as cartilage, blood vessels, and tendons, we need to create tougher biodegradable hydrogels. This is just what a collaborative team of researchers from the University of Twente, Utrecht University, and University Medical Center (UMC) Utrecht set out to do. The researchers published a paper, titled “Thermoplastic PCL-b-PEG-b-PCL and HDI Polyurethanes for Extrusion-Based 3D-Printing of Tough Hydrogels,” that details their work in developing tough hydrogels based on the formation of thermoplastic polyurethanes (TPU), which have high toughness and can be processed through extrusion-based 3D printing processes. TPUs that are based on poly(ethylene glycol), or PEG, can be designed to form physical networks of hydrogels that take up a lot of water – perfect for working with load-bearing soft tissues.
The tough hydrogels the team developed used a reaction of poly(ɛ-caprolactone)-b-poly(ethylene glycol)-b-poly(ɛ-caprolactone) triblock copolymers (PCL-b-PEG-b-PCL) and hexamethylene diisocyanate to form TPUs. In this multi-block copolymer, PEG will make the material hydrophilic, and the hydrophobic PCL component helps the structure fixate during 3D printing, as well as form the network’s crosslinks in the hydrated state.
Several tests and analyses, such as NMR-spectroscopy and Differential Scanning Calorimetry (DSC), were used to confirm the material’s chemical composition, structure, molar mass, and viscosity; tensile testing was also completed. Then, the team cut compression molded polymer films into small pieces and extruded them with a Noztek Pro filament extruder, before collecting the extruded filaments, air-cooling them, and using them to 3D print designed structures on an Ultimaker 2+ 3D printer at 1 mm per second.
Co-authors of the paper are Aysun Güney, Christina Gardiner, Andrew McCormack, Jos Malda, and Dirk W. Grijpma. Discuss this research and other 3D printing topics at 3DPrintBoard.com or share your thoughts below. Printing via 3DPrint.com | The Voice of 3D Printing / Additive Manufacturing https://3dprint.com November 30, 2018 at 11:34AM
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Inside 3D Printing Mumbai Returns for its Fourth Installment, Featuring New Additive Manufacturing Business Forum https://ift.tt/2AC1XLp For the fourth time, the Inside 3D Printing Conference and Expo is heading to Mumbai. From December 19th to the 20th, the 3D printing trade show will take place at the Nehru Centre in Mumbai, holding the distinction of the largest business networking platform for 3D printing technology in India. The show is being launched by Rising Media and the Indian 3D Printing Network vertical of CNT Exposition and Services in partnership with Imaginarium, one of India’s largest 3D printing and additive manufacturing technology providers. A large and varied number of exhibitors will be featured at Inside 3D Printing Mumbai, including representatives from the areas of software, additive manufacturing services, 3D scanning, reverse engineering and metrology, 3D printing technology (including polymers, metals and material jetting), materials and components, design and production development and metal additive manufacturing solutions. Visitors will be welcome on both days from 10 AM to 6 PM. For the first time, the Additive Manufacturing Business Forum will be taking place on December 19th. The event is designed for knowledge sharing, learning, exploring new career opportunities, learning and identifying whether additive manufacturing fits into your production process. The forum will present applications and business cases by top industry experts from all over the world. These business cases will cover a wide variety of areas, including tooling, automotive engineering, metal additive manufacturing, dental, Design for Additive Manufacturing (DfAM), healthcare and more. The main focus of the Additive Manufacturing Business Forum will be to offer new market trends, innovations and developments from the field of additive manufacturing. Topics covered in the seminars will illuminate the ways to implement additive manufacturing to meet commercial and industrial requirements in different industries. A number of different speakers will address attendees, hailing from companies including Danfoss Renishaw, EWI, Sridevi Tools, Imaginarium, Wipro 3D, Intech DMLS, LHM Germany, Designtech, Additive Industries, Gharda Plastics and others. Inside 3D Printing Mumbai is designed to appeal to a wide range of attendees, including design heads, automotive professionals, healthcare professionals, academicians, tooling experts, architects, consumer goods designers, software developers, implant manufacturers and foundry owners. Several speakers have been lined up for the event so far, including:
Interested attendees have a couple of options: they can purchase a pass that will gain them entry to the Additive Manufacturing Business Forum, which includes a networking lunch, complimentary copies of industry white papers, and a complimentary copy of Metal Additive Manufacturing Magazine. There is an early bird discount that expires today. For those who are simply interested in seeing the exhibition hall, they can sign up for a free networking pass. You can register for Inside 3D Printing Mumbai here. Discuss this and other 3D printing topics at 3DPrintBoard.com or share your thoughts below.
Printing via 3DPrint.com | The Voice of 3D Printing / Additive Manufacturing https://3dprint.com November 30, 2018 at 11:34AM
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MIT Developments: A Faster 3D Printer and Antibacterial 3D Printed Cellulose https://ift.tt/2Q9sMBq Researchers at MIThave developed a new 3D printer print head that can deposit material at extremely high speed, creating objects in minutes instead of hours. A. John Hart, a professor of mechanical engineering and director of the Laboratory for Manufacturing and Productivity and the Mechanosynthesis Group at MIT, is an expert on 3D printingand is working to advance the development and adoption of the technology. One thing 3D printing needs to be, he believes, is faster. Hart worked with doctoral student Adam Stevens and graduate Jamison Go, who now works as a mechanical engineer at Desktop Metal, to study several commercial FFF desktop 3D printers. The team concluded that the 3D printers’ volumetric building rates were limited by three factors: how much force the print head could apply as it pushed the material through the nozzle; how quickly it could transfer heat to the material to get it to melt; and how fast the printer could move the print head. They then developed a 3D printer that circumvents all three of those limitations. The design involves a filament with a threaded surface that goes into the top of the print head between two rollers that keep it from twisting. It then enters the center of a rotating nut, which is turned by a motor-run belt and has internal threads that mesh with the external threads on the filament. As the nut turns, it pushes the filament into a quartz chamber surrounded by gold foil. A laser then enters from the side and is reflected multiple times by the gold foil, passing through the filament and heating it. The filament then enters a hot metal block where it is heated to a temperature above its melting point. It continues to melt and narrow as it descends and is eventually extruded. It sounds complicated, but it’s much faster than standard 3D printers, in which the filament is pushed by two small, rotating wheels. If you try to speed things up by adding more force, the wheels lose traction and the filament stops moving. That’s not an issue with the MIT design; the matching threads on the filament and nut ensure maximum contact between them, and the system can transfer a high force to the filament without losing grip. Typical 3D printers also rely on thermal conduction between the moving filament and a heated block. A higher feed rate may not completely melt the filament, but preheating the filament with a laser ensures that it is entirely melted by the time it gets to the nozzle. Tests showed that the researchers’ print head can deliver at least two and a half times more force to the filament than standard desktop 3D printers can, achieving an extrusion rate 14 times greater. Because the extrusion rate was so high, the researchers needed to find a way to move the print head fast enough to keep up. They designed an H-shaped metal overhead suspension gantry that has a continuous belt that travels around pulleys powered by two motors mounted on the stationary frame. The print head sits on top of a stage that is connected to the belt and is carried quickly and smoothly through the prescribed positions within each plane. The researchers 3D printed a series of test objects, including a pair of eyeglass frames, which took 3.6 minutes; a small spiral cup, which took just over six minutes; and a helical bevel gear in just over 10 minutes. The printed layers were highly uniform, and the parts showed themselves to be strong and robust in tests of their mechanical properties. The researchers also 3D printed the same object with their printer and several commercial models: a triangular prism 20 mm tall. For a comparable resolution, the printer achieved an average volumetric build rate up to 10 times higher than the other printers. The printer wasn’t without its issues; for example, the high build rates resulted in layers that did not adhere well, as well as distortion. These problems were solved, however, by directing a controlled flow of cooling air onto newly extruded material. The researchers are also working on improving the printer’s accuracy by coordinating the extrusion rate and print head speed, as well as implementing new control algorithms. MIT’s 3D printer prototype cost about $15,000, making it an unlikely candidate for replacing most desktop models. However, it could be competitive with some higher-end professional 3D printers. Hart and his team are also working on developing new 3D printing materials that are environmentally friendly and easy to source – like cellulose. Cellulose has many advantages: it’s inexpensive, biodegradable, renewable, robust and chemically versatile. It’s difficult to 3D print, however, because it tends to decompose when heated. Hart and former postdoc Sebastian Pattinson worked with cellulose acetate, a chemically treated form of cellulose that has fewer hydrogen bonds and thus makes it less prone to decomposition. First, the cellulose acetate was dissolved in an acetone solvent to form a viscous material that flows easily through a printer nozzle at room temperature. As the mixture spreads across the print bead, the acetone solvent quickly evaporates, leaving the cellulose acetate behind. Immersing the printed object in sodium hydroxide removes the acetate and restores the full network of hydrogen bonds that give cellulose its strength. The researchers were able to 3D print complex objects with good mechanical properties from the material. Their strength and stiffness were even found to be superior to objects printed from common 3D printing materials. The researchers then began experimenting further.
The researchers modified the cellulose acetate by adding antimicrobial properties. They 3D printed a series of disks, some from plain cellulose acetate and some with antimicrobial dye added, and deposited a solution containing E. coli bacteria on each one. They left some of the disks in the dark and exposed others to light from a fluorescent light bulb. After 20 hours, analysis showed that the disks made with dye and exposed to the light had 95 percent fewer bacteria than the others. They then 3D printed surgical tweezers as an example of a tool that could be made with the valuable antimicrobial properties. Hart believes that there is commercial potential for their cellulose 3D printing process. Cellulose is inexpensive and widely available, and can be printed at room temperature, eliminating the need for a costly heat source. As long as the acetone is captured and recycled, it’s also an environmentally friendly process. Discuss this and other 3D printing topics at 3DPrintBoard.com or share your thoughts below. [Source: MIT]
Printing via 3DPrint.com | The Voice of 3D Printing / Additive Manufacturing https://3dprint.com November 30, 2018 at 10:33AM
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How Small and Medium Businesses Deal with Work-Life Balance https://ift.tt/2QqfjUZ There’s one thing missing from the many studies on work-life balance. It’s the story of small- and midsized business owners, who make up most of the GetResponse customers. So we set out to discover how entrepreneurs and marketers work, their needs and habits when balancing business and life, and how we can help them save more time to do more of what they love.
GetResponse conducted a global survey in July 2018. The response went beyond our expectations – 4,237 small business owners and marketers decided to share their valuable voice with us. They told us about their challenges and tough choices, their goals and personal pursuits.
We proudly present the results of this immense research in the SMB Work-life Balance 2018 Report, created to honor the hardships and rewards of small businesses.
Key findingsIt’s no secret that entrepreneurs work harder to grow the business with limited resources to start. According to our study, over 25% of SMB marketers work more than 40 hours a week and an outstanding 91% work weekends. They tend to answer business calls and emails in their free time (69%) and some of them haven’t taken a vacation for over 4 years (16%). How can we talk about work-life balance, then? Apparently, it’s the reason why 32% of SMB entrepreneurs decide to start their own business in the first place. They can spend more time having fun with friends and family (43%) or have more control over their career (19%). 61% of SMB owners told us they would never go back to a 9-5 job. That proves having your own business can be tough, indeed, but it’s rewarding. We can’t say that business owners can always fully achieve the perfect work-life balance. But we can say that they’ve entered the era of work-life integration. Thanks to technology they can be working between dropping kids at school and going to the gym, having business meetings on Saturdays or working on vacation. Countless hours in the office simply don’t matter when you do what you love.
Living proofTo test these theories, we met six American entrepreneurs, who run small businesses in Massachusetts, in person. We asked Harold, Shel, Katie, Kim, Paul, and Joanne how they combine their private and professional goals, what challenges they currently have, and what motivates them to keep going. The result? Hours of inspiring video materials for small and medium-sized businesses (and yes, we made them available here!)
From marketing agency owners, through photographers, interior designers, and vintage car dealers – we learned what really defines success for small businesses and how GetResponse can help achieve it. The bottom line is – when done right, running your own business becomes a passion, and passion doesn’t have time frames.
Download our report, keep us inspired and share your story with #getbalance #worklifebalance
SMB Work-Life Balance 2018 ReportGet the report and discover how entrepreneurs and marketers work, their needs and habits when balancing business and life. Printing via GetResponse Blog – Online Marketing Tips https://ift.tt/1Qs2QKR November 30, 2018 at 07:17AM US Army Characterized Continuous 3D Printed Carbon Fiber-Reinforced Thermoplastic Composite Parts11/30/2018
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US Army Characterized Continuous 3D Printed Carbon Fiber-Reinforced Thermoplastic Composite Parts https://ift.tt/2DQnbZk A trio of researchers with the US Army Tank-Automotive Research Development, and Engineering Center (TARDEC) in Michigan recently published a study, titled “Characterization of Continuous Fiber-Reinforced Composite Materials Manufactured Via Fused Filament Fabrication,” that worked to characterize continuous carbon fiber-reinforced thermoplastic composite parts that were 3D printed on a Mark Two 3D printer.
As most 3D printed parts are built from the bottom up, it’s not unusual for out-of-plane material properties to be weaker than in-plane ones. When in-plane printing occurs of continuous fibers, the completed parts can have increased stiffness and in-plane strength, but researchers don’t have a clear idea as to how continuous fiber reinforcements affect an as-manufactured part’s mechanical anisotropy.
The researchers used the nylon-based thermoplastic Onyx by Markforged in their study, along with continuous carbon fiber tow coated with a binder material, and 3D printed several test specimens in order to gain a better understanding of how much of an influence the continuous carbon fiber reinforcement would be: • Group 1: Onyx (in plane, Nylon/Carbon plastic): ID# 1-1, 1-2, 1-3 To make analysis easier, the team only tested specimens with unidirectional fiber orientations. The pure Onyx specimens in the first group were 1.8 mm thick and used as a baseline, while the 0° specimens from Group 2 featured two 0.125 mm layers of Onyx on the roof and floor, along with two Onyx layers on the side walls; the rest was filled with carbon fiber that were “oriented longitudinally in the direction of pull for a tensile test.”
The Group 4 specimens were 3D printed vertically, and were tested for adhesion evaluation between fiber-reinforced layers. Then, the researchers conducted Thermogravimetric Analysis (TGA) and Fourier Transform Infrared (FTIR) Analysis on the Onyx specimens in order to gain a better understanding of the material’s thermal characteristics; tensile testing was also conducted until total specimen failure.
The researchers determined that the materials used in this study have a high degree of mechanical anisotropy, and that others need to consider the 3D anisotropic mechanical properties when they are used in structural applications. In addition, the team also determined that the traditional dog bone-shaped tensile bars they used for the study were not the best choice for specimens manufactured using CFF, mainly because of “the unique fiber placement process and local variations in fiber angle around the curved radii,” and recommend that other researchers use rectangular specimens with bonded tabs, per the ASTM D3039-17 Standard Test Method for Tensile Properties of Polymer Matrix Composite Materials. Co-authors of the paper are Robert J. Hart, PhD, Evan G. Patton, and Oleg Sapunkov. Discuss this research and other 3D printing topics at 3DPrintBoard.com or share your thoughts below. Printing via 3DPrint.com | The Voice of 3D Printing / Additive Manufacturing https://3dprint.com November 30, 2018 at 02:06AM
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MakerFleet: A 3D Printer Farm That Offers Customers Easy Access and Remote Control https://ift.tt/2BHs2dO You may have heard of the concept of a 3D printer farm – multiple 3D printers set up in one location, all working together in a 3D printing factory that can generate hundreds of parts in mere hours. It’s a really cool concept, but not many people have access to that many 3D printers – certainly not the average individual. That’s what recent Harvard graduate Harnek Gulati wants to change, and he’s working to do so with his MakerFleet concept.
MakerFleet is based at Harvard Innovation Labs and consists of 18 3D printers that customers can rent for $2.00, plus $3.50 an hour. Users connect online to any of the 3D printers, and then have full control of the print job, from print settings to the position of the item on the print bed. They can then watch the print in process through MakerFleet’s webcams, and if the MakerFleet staff doesn’t catch a failed print first, the user can cancel it and start another. Local customers can pick up their 3D printed items directly or have them shipped to them. Gulati hopes to eventually expand to a larger network of MakerFleet labs around the world so that they become more local for more people.
MakerFleet isn’t the first service to offer print on demand capabilities; there are large companies like Shapeways that work with a network of manufacturing partners to be able to produce and deliver locally, for example, and of course there is 3D Hubs, which allows customers to order 3D prints from their closest participating 3D printer operator. In a way, MakerFleet is like a massive Hub, with one key difference: customers can watch and control their items being printed. Gulati recently graduated from Harvard with a computer science degree, but MakerFleet is not his first entrepreneurial project. First he created a limited edition series of wooden watches that turned out to be immensely popular; he raised more than $75,000 in less than a month after setting an initial goal of $15,000 on Kickstarter. He realized how difficult it was to manufacture a product for hundreds of people, and that led him to the idea of setting up a factory that could be accessed online. Many individuals who don’t live near Harvard will likely still turn to their local 3D Hubs for their 3D printing needs, but a project like MakerFleet could be useful to small businesses who need more than one 3D printer to produce a product but don’t have the funding or space to establish their own 3D printer farms. MakerFleet is still a new endeavor; Gulati started it in May of 2018 and has a far-reaching vision for reproducing the intitial lab in locations around the world. If he succeeds, MakerFleet could be another new aspect of a world of more distributed manufacturing. Discuss this and other 3D printing topics at 3DPrintBoard.com or share your thoughts below. [Source: American Inno]
Printing via 3DPrint.com | The Voice of 3D Printing / Additive Manufacturing https://3dprint.com November 29, 2018 at 03:57PM U.S. Postal Service Governors Appoint Inspector General https://ift.tt/2KHCncp WASHINGTON – The Governors of the U.S. Postal Service today announced the appointment of Tammy L. Whitcomb as the third Inspector General of the U.S. Postal Service. Printing via USPS News https://ift.tt/2hH9aDC November 29, 2018 at 03:52PM Researchers Qualify 3D Printed Aerospace Brackets and use Thermoelastic Stress Analysis for Testing11/29/2018
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Researchers Qualify 3D Printed Aerospace Brackets and use Thermoelastic Stress Analysis for Testing https://ift.tt/2E5hfwd 3D printed aerospace brackets made from titanium alloys are becoming more common in the design of spacecraft and satellites. Any aerospace component, however, cannot just be 3D printed and stuck onto the spacecraft – it must be tested and qualified to make sure that its mechanical behavior, among other qualities, is acceptable. In a study entitled “Non-Contact Measurement Techniques for Qualification of Aerospace Brackets Made by Additive Manufacturing Technologies,” a team of researchers undertakes a feasibility study of the Thermoelastic Stress Analysis (TSA) on a titanium alloy space bracket made by Electron Beam Melting. The researchers developed a methodology that they implemented on a titatium based-alloy satellite bracket. They first designed a test bench for TSA. In order to define possible deviations between the expected and actual mechanical behavior, they compared TSA results with a Finite Element Analysis evaluated on the CAD model.
They extracted significant interrogation lines in order to gain more sensitivity about the stress trends.
The results of the analysis showed the same trends at larger scales, but smaller unexpected peaks in the TSA data and in the evaluated FEM, due to the particular micro and macro conformation given by the 3D printing process.
Authors of the paper include G. Allevi, M. Cibeca, R. Fioretti, R. Marsili, R. Montanini and G. Rossi. Discuss this and other 3D printing topics at 3DPrintBoard.com or share your thoughts below.
Printing via 3DPrint.com | The Voice of 3D Printing / Additive Manufacturing https://3dprint.com November 29, 2018 at 02:51PM |
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