It is just getting started.”. Of course, even armed with several decades of foreknowledge, that’s no simple task: adding CNC capabilities isn’t just a matter of plunking controls down onto existing manual machines. The biggest challenge of additive is getting the metallurgy right. On the other hand, this result comes from changes in the mid-range of the scale. However, it’s worth noting that a higher percentage report using 3D printing for prototyping, final products or both. 7 Questions on Additive Manufacturing in the US Ian Wright posted on May 03, 2016 | Survey investigates potential disruptive effects of 3D printing on manufacturing. “Unless it is able to do everything for me in one step—that means support removal and finishing—then I do not see the advantage in investing in a hybrid machine, because it’s very likely that I will still need all these downstream operations to truly get my part production-ready.”. Often it is some combination of these three that makes a part a prime candidate for fabrication by AM.”. Integration is a difficult and complex task—just ask an integrator. Thousands of products… Manufacturing Process Objective Questions with answers - Set 20 MCQ Production Engg Edit Practice Test: Question Set - 20. ), A selection of metal additive parts. So, you’ve determined that metal additive manufacturing is a good fit your application, you’ve decided between outsourcing and printing in-house, you’ve selected your additive technology and the machine that’s going to use it. This set of Manufacturing Processes Multiple Choice Questions & Answers (MCQs) focuses on “Laser Welding – 7”. Chapter 1: INTRODUCTION AND OVERVIEW OF MANUFACTURING. ), Additive manufacturing on Tongtai's AMH-350, Rhodium metal: powder, pressed pellet (3*10, (Image courtesy of NextManufacturing Center/Carnegie Mellon University.). Source: Gibson, Additive Manufacturing facet normal 4.470293E02 7.003503E01 7.123981E-01 outer loop vertex 2.812284E+00 2.298693E+01 0.000000E+00 vertex 2.812284E+00 2.296699E+01 1.960784E02 ... (~37%) of the original value. RAPID PROTOTYPING AND ADDITIVE MANUFACTURING. 23 terms. So many, it seems, that Canadian manufacturers are still skeptical of its value. Small production lots can also be cost-effective for AM. Broadly speaking, there are two main approaches to metal 3D printing: powder bed fusion (PBF) and directed energy deposition (DED). There’s also Desktop Metal’s relatively new bound metal deposition (BMD) technology. Among the most notable findings reported by PwC, which commissioned the study, are an increase in the use of 3D printing in prototyping and final products as well as an increase in the number of manufacturers expecting 3D printing to be used for high-volume production within the next three to five years. This option was denied to the respondents of the survey discussed above, which instead used Moderately Likely. Do these results suggest that 3D printing will be a ubiquitous manufacturing technology by 2021? Questions (2) – (5) used a Likert scale, where respondents were given one of five options between Very Likely and Very Unlikely. “People from the machine world aren’t used to being responsible for the volumetric quality of metal,” said Jones. Even if you decide that you’re better off outsourcing when it comes to metal additive manufacturing, several of the questions that apply to those working with metal AM in-house will still apply to you. 46. Beuth explained it this way: “We break it down into three factors that can lead to adoption of AM over conventional processing. ADVERTISEMENTS: Multiple Choice Questions and Answers on Manufacturing Industries Related posts: 15 Multiple Choice Questions and Answers on Nationalism in India Multiple Choice Questions and Answers on Minerals and Energy Resources 50 multiple choice questions with answers Multiple Choice Questions and Answers on National Economy Multiple Choice Questions and Answers on … One last caveat from Styles bears emphasizing: “It also needs to be said that virtually all 3D metal printed parts will require some form of post-machining, so there are advantages to having both processes available on one shop floor.  I would caution anyone, however, to take on such an investment only after doing extensive research on the costs, the design requirements of the technology, and what exactly you hope to achieve.”. ADDITIVE MANUFACTURING. 1. Shop for Multiple Choice Questions On Additive Manufacturing And Multiple Choice Questions On Selenium Commands Ads Immediately . “A common mistake for new users comes from a lack of understanding of which alloys can be used for metal AM,” said Uckelmann. Although restructured supply chains and threats to intellectual property remain the most cited disruptive effects of 3D printing, they are also the most obvious. ), Aluminum part created using DMLS. Registration on or use of this site constitutes acceptance of our In the right applications, additive manufacturing delivers a perfect trifecta of improved performance, complex geometries and simplified fabrication. Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. Generally speaking, wire products are more varied and easier to obtain than metal powders, due in large part to the former’s use in welding applications. In addition, the number of respondents not applying the technology at all and the number experimenting to determine how to apply the technology have both dropped. In this page you can learn various important gears questions answers,sloved gears questions answers, gears mcq questions answers etc. In contrast, if you’re going to building something from scratch, where it’s virtually all built from powder, then separate machines might make more sense.”. Each Correct Answer Is Worth 1 Point. Posts 1 • Views 18 The following materials are often used in 3D printing for print adhesion: Even well-staffed companies experience a delay of 6 months to a year between the time a machine is delivered and the time where they are regularly producing components.”. “The technology is moving fast and has already spread from significant penetration in the aerospace industry to now beginning to penetrate the fabrication of almost all metal components,” said Jack Beuth, professor of mechanical engineering and director of the NextManufacturing Center at Carnegie Mellon. To Achieve A Perfect Score On The Quiz, All Correct Answers Must Be Given. We post the similar article on thermal engineering and on manufacturing technology if you want to improve your thermal engineering subject you’ve to … What would you do with that knowledge, aside from buying stock in Apple and Microsoft? Multiple choice questions on manufacturing technology 1. There are questions – lots of them – around Industry 4.0. 29.1 Rapid prototyping and additive manufacturing are two terms that refer to fabrication technologies that add layers of material to an existing part or substrate: (a) true or (b) ... CH 19 Multiple Choice Q's. If you happened to work in manufacturing, you might push for adopting computer numerical control (CNC). The lack of high-quality, defect-free metal powder could very well be the principal bottleneck for metal additive manufacturing in the near term. (Image courtesy of NextManufacturing Center/Carnegie Mellon University. On the whole, the latter half has increased from 42.5 percent in 2014 to 47.1 percent, which is suggestive of elevated optimism regarding 3D printing’s usefulness for newly developed products. Â. Increases in the number of respondents citing printer speed and the inability to print fully functional systems along with a decrease in the lack of expertise are indicative of the wider adoption of 3D printing compared to the previous survey. All of the questions regarding the future of 3D printing were framed in terms of the next three to five years. CFM International’s 3D-printed fuel nozzle. Mitsubishi Hitachi Power Systems Americas, Inc. An Introduction to Interferometers for Highly Accurate Engineering Measurements, An Introduction to Advanced Composite Fabrication, Optimizing Machining and Workholding for Metal Additive Manufacturing, How Traditional Machine Tool Alignment Processes Compare to Laser Calibration, Aluminum Alloys 1100, 2318, 2319, 3000 Series, 4043, 4047, 5183, 5356, 5554, 5556, Austenitic Stainless Steels and Duplex Steels, Precious Metals (Gold, Platinum, Palladium, Silver). It is easy to understand and help you to improve your skill. Home. Once you’ve decided that metal AM is the way to go, you immediately run into one of the most common quandaries in manufacturing: to outsource or stay in-house. 2. Multiple Choice Questions On Manufacturing Process and Production Engineering. Image: With additive manufacturing you can print multiple movable parts in a single piece, potentially saving time on assembly and material. Principles of Modern Manufacturing, 5th Edition SI Version. If turnaround time is critical, metal AM is the best manufacturing solution, as lead times are as short as 10 working days.”. A recent survey of 120 US manufacturing professionals has found significant shifts in attitudes regarding 3D printing compared to just two years ago. This may not be the most essential consideration, but it is worth keeping in mind, especially if you’re hesitant to go all-in on your first foray into additive manufacturing. Privacy Policy. Uckelmann also offered a helpful guide for deciding whether your part would be better served by additive or subtractive processes: “When compared to milling, metal AM is cost competitive if the buy-to-fly ratio is higher than 10:1, especially for titanium products. The most pressing is the question of which metal … In contrast, directed energy deposition involves feeding a powder or wire into a melt pool generated on the surface of a part using a laser or electron beam. While additive manufacturing seems new to many, it has actually been around for several decades. The difference between welding at long and short wavelengths is due to _____ Fundamentals of Modern Manufacturing: Materials, Processes, and Systems, Enhanced eText, 7th Edition. Styles also touched upon the more general issues with outsourcing: “If a company is making parts for themselves, such as GE printing advanced fuel pump nozzles for their engines, then they can control their proprietary design as well as directly monitor the quality of the results – important considerations for such a sophisticated part performing a critical function.”Â. These three factors (part consolidation, production time and performance) are exemplified by applications in the aerospace and medical device industries, but they generalize to most other industries. (Image courtesy of GE. ), Cabin brackets for the Airbus A350 XWB. Printing something that looks like what you want it to look like is actually not that hard, but printing something that performs the way you want it to perform—that’s the real challenge. As with adding one of Hybrid Manufacturing Technologies’ deposition modules to a machine you already have, opting for a hybrid machine from a major manufacturer has the benefit of minimizing the amount of additional training required to get a new additive system up and running. Beuth agreed, emphasizing the time lag between installing a metal 3D printer and having it set up and running at capacity: “The biggest mistake new users make is not understanding what really goes into making a part before buying a machine or targeting an application for it. The process is essentially a form of automated build-up welding. Manufacturing Technology Objective Questions with answers - Set 21 MCQ Production Engg Edit Practice Test: Question Set - 21. This result is particularly interesting, given that 71.1 percent of respondents reported using 3D printing in some capacity, whether for prototyping, final products or just experimenting. rico_santos. 1. There are several explanations for this result, including—as speculated in the report—that adopters of emerging technologies assume they are further ahead of the curve than their peers. “Right now, when you buy a billet of material, you’re assuming it’s fully dense. B- flying chips may cause eye injuries C- it gives a poor finish to the job D -it is too expensive. On the whole, the number of manufacturers who believe that 3D printing will become a mass production technology within the next three to five years has increased by four percent. “The analogy I make is that, with respect to metals AM, we are where personal computing was back in the 1980s. CH 1 Multiple choice. “Second, AM can win on time to market. The most pressing is the question of which metal AM technology will work best for your application. Even dogs are benefiting from medical implants made with metal 3D printing, thanks to 3D Systems’ Direct Metal Printing (DMP) technology. The answer to this question hinges on a whole host of other factors, including setup costs, shipping costs, inspection and quality control requirements, intellectual property, security and more. Copyright © 2021 engineering.com, Inc. All rights reserved. (Image courtesy of Hybrid Manufacturing Technologies. Professionals, Teachers, Students and Kids Trivia Quizzes to test your knowledge on the subject. By biasing the middle option toward the Likely end of the scale, the survey could very well be misrepresenting the opinions of the respondents. Home. Sciaky, Inc., a developer of metal 3D printing technology, including Electron Beam Additive Manufacturing (EBAM), lists the following raw materials as being available in wire feedstock: Sandvik Materials Technology, which suppliers metal powders for additive manufacturing, lists the following materials as its most popular products: Selecting the right supplier is almost as important as selecting the right feedstock type and material. Overall, 71.1 percent of respondents reported using 3D printing in some way, a slight gain from 67 percent in 2014. As a result, opportunities abound for those who actively embrace additive manufacturing. A recent survey of 120 US manufacturing professionals has found significant shifts in attitudes regarding 3D printing compared to just two years ago. “Third, AM can win if it is able, through part redesign, to enhance the performance of the component or components. Compared to the previous question, the data here is much more clear-cut with 64 percent of manufacturers believing that 3D printing will be used to be replace obsolete parts. 9. As it was with CNC, manufacturers seem to be faced with the following choice when it comes to metal AM: get on board or risk being left behind. Get a feel for the different topics covered in the exam and look at the weighting of questions. Manufacturing Technology Exam Questions [Just for practice] This article tests your studies, that how much you have understood the subjects. It isn’t necessarily worthwhile to use additive manufacturing for a part that’s been reliably produced through conventional, subtractive processes for years. Despite the enthusiasm surrounding metal additive manufacturing, it’s not a magic bullet that makes any part better. Browse by ... Table Of Contents. Specially developed for the Mechanical Engineering … Additive Manufacturing 101: Common Questions It’s time to take the mystery out of additive manufacturing. In the metallic space, all of the challenges are in materials engineering.”. Question: Chapter 32 RAPID PROTOTYPING AND ADDITIVE MANUFACTURING Multiple Choice Quiz There Are 17 Correct Answers In This Multiple Choice Quiz (some Questions Have Multiple Answers That Are Correct). In some industries, getting to market first is more important than cost per part (first-in usually wins). A lay-up technician utilizes an open-mold system and uses a variety of hand instruments to form the composite structure. Frequently asked questions on both the compression molding and lay-up processes is ideal, see our lay-up page and our compression molding page. The consolidation of parts can yield major cost savings. Below is an approximate number of multiple choice questions on the exams. Solutions to Multiple Choice Questions (the Word Viewer has been retired) which will improve your skill. (Right) A laser sintering machine. Opinions at the extremes have shifted in the opposite direction, with fewer manufacturers believing that this possibility is very likely and more believing that it is very unlikely. His company produces deposition modules that can be added to existing machine tools, turning conventional CNC machines into hybrid additive/subtractive setups. Dentistry also increasingly involves metal AM, particularly for bridges and crowns. The topic of hybrid machines is a controversial one. It’s a new space for somebody who runs machine tools to say, ‘Oh, I’ve got to make sure my powder is dry so I don’t introduce any defects into the volume of the material.”. Its capability at making internal passages is very good, so if you’re looking at parts that have internal passages, there were probably made with powder bed fusion.”, “The original 3D printing mentality was: ‘This thing comes out of the box and it’s a finished part.’ That’s why its killer application was prototyping. MCQ quiz on Manufacturing Processes multiple choice questions and answers on Manufacturing Processes MCQ questions on Manufacturing Processes objectives questions with answer test pdf for interview preparations, freshers jobs and competitive exams Page 3 Certified Manufacturing Associate (CMfgA) - 75 Certified Manufacturing Technologist (CMfgT) – 130 Certified Manufacturing Engineer (CMfgE) – 180 Lean Bronze – 165 Lean Silver – 150 Lean Gold – 150 Additive Manufacturing Fundamentals – 110 Multiple Choice: Multiple Choice This activity contains 10 questions. Even if you decide that you’re better off outsourcing when it comes to metal additive manufacturing, several of the questions that apply to those working with metal AM in-house will still apply to you. For that reason, we’ll focus here on powder bed fusion and directed energy deposition. It Uniquely Supports New AI-Driven Design Methods. Practice Test: Question Set - 07 1. Practice Test: Question Set - 07 1. What are your post-processing requirements. Jones has a unique insight into this question. Multiple Choice Questions with Answers on Refrigeration and Air-Conditioning - Set 07. Question 1: Avoid using compressed air to clean chips from the milling machine because … A- it does the job too slowly. Subtypes of DED include laser metal deposition (LMD) and direct metal deposition (DMD). rico_santos. DED naturally lends itself to hybrid setups. Manufacturing may produce these types of products: Discrete or continuous: Raw material or parts: Machinery or manufactured: Processes or operations: Recently, design engineers have begun using artificial intelligence-driven generative design to create products. experience for engineering.com stories! MCQ quiz on Manufacturing Processes multiple choice questions and answers on Manufacturing Processes MCQ questions on Manufacturing Processes objectives questions with answer test pdf for interview preparations, freshers jobs and competitive exams. This post is part of a continuing series dedicated to the questions that surround Industry 4.0, the Industrial Internet, and manufacturing. Although the prospects for BMD are exciting—the company boasts that its tech offers a hundred times the speed of selective laser melting (SLM) at a tenth of the cost—it’s still in the relatively early stages compared to PBF and DED. That being said, that expectation has also decreased from 2014, when it was at 70 percent. 233 MULTIPLE-CHOICE QUESTIONS Complete these questions without using the text and then refer back. For example, although uncertainty regarding the quality of 3D-printed parts remains a significant barrier to adoption, it has been replaced by cost as the most commonly cited barrier. rico_santos. First, AM can win on cost per part, particularly if a current part or collection of parts are redesigned to exploit additive. That’s why he predicts that, “In the future, hybrid machining will likely consist of a combined line of AM printers and CNC milling machines, where parts move from one system to another.”, Dhruv Bate, senior technologist at PADT, agreed: “Here is the crux of the challenge that I pose to folks who want to go hybrid,” he said. (Image courtesy of, Hybrid Manufacturing Technologies' deposition modules are designed to be integrated into existing machine tools. This additive manufacturing technique utilizes lasers and powder materials to create 3D objects. What’s interesting here is the increase in the less cited effects, including changes to relationships with customers and reduced transportation and logistical needs. Beuth has previously predicted that growth in the metal powder supply chain will struggle to keep pace with supply. It should be noted that respondents could select all the barriers that applied to them, which explains why the percent totals of all choices add up to more than 100. Uckelmann, for example, pointed out that a machine combining milling with metal AM cannot perform both functions simultaneously. Are any well-known commercial products made with additive manufacturing? 7 Questions on Additive Manufacturing in the US, An Introduction to Interferometers for Highly Accurate Engineering Measurements, An Introduction to Advanced Composite Fabrication, Optimizing Machining and Workholding for Metal Additive Manufacturing, How Traditional Machine Tool Alignment Processes Compare to Laser Calibration. CHAPTER 1 1. But with additive processes, you’re forming the internal microstructure as you go. That being said, there’s still a lot to do before you’ll be able to take full advantage of that shiny new additive process. When asked about the choice between hybrid machines and dedicated 3D printers, Jones granted that there are instances where an independent additive machine makes sense. 7 Questions to Ask Yourself When Choosing a 3D Printing Technology and Material Additive metals, laser sintering, extruded filament, powdered plastics, alloys, photopolymers – the list goes on and on. (Left) An early CNC fed by paper tape. “So,” Jones continued, “they’re going to almost half of the capital equipment requirements to produce their parts by going to a single-setup approach. Here are the answers to a few common questions about the industry and where it’s going. However, as a PBF hybrid machine, Matsurra Machinery’s LUMEX Series is an exception to this general rule. The results show a roughly even split between manufacturers who believe that 3D printing will be more useful for after-market parts and those who believe that it will be more useful for newly developed products. We're working on a new experience for engineering.com stories! Paul Browning, president and CEO of Mitsubishi Hitachi Power Systems Americas, Inc. and a metallurgist by training, emphasized the difficulties that come with investing in metal 3D printing: “My biggest piece of advice to new adopters is to hire a good metallurgist. (For an in-depth look at Desktop Metal’s BMD, click here. 20 terms. However, whereas a typical Likert scale involves five options between Strongly Agree and Strongly Disagree, the middle option is usually Neither Agree nor Disagree. Now, flash forward to metal additive manufacturing (AM) today—another technology poised to make a huge impact on manufacturing, and sooner than you might think. Certified Manufacturing Technologist (CMfgT) and Certified Manufacturing Engineer (CMfgE) Recommended Review Books; Additive Manufacturing Certification Recommended Review Books; Review the Body of Knowledge outline. They’re working on castings coming from a foundry, which will go onto a hybrid all-in-one machine and what has historically been three or four difference setups will now be merged into one.”, Jones suggested one way to determine whether hybrid machining makes sense for your application: “The first question is: ‘What percentage of material are you adding to the part?’ If you’re only adding 5-15 percent of the volume, then an all-in-one machine could very well be a better business case for you. The level of standardization in the industry also needs to catch up and the rate of obsolescence in metal AM machines needs to come down in order for companies to install their own machines instead of turning to a metal AM service provider.”. Additive Manufacturing (AM) or Three Dimensional Printing (3DP) is a manufacturing approach where a part can be produced without using any part-specific tooling. The results from this question reveal a number of insights into the development of 3D printing technology over the last two years. But before you board the hype train, there are ten questions you need to ask. Today there are a plethora of 3D printing processes and materials to choose from and it’s only growing. This object was made with direct metal laser melting (DMLM). “In contrast, with powder bed fusion you’re typically growing an entire part from scratch. If your application demands PBF, then you’re likely looking at a standalone machine. Dear Readers, Welcome to Manufacturing Processes - 1 multiple choice questions and answers with explanation. But directed energy deposition was so coarse in comparison to machining that its volumetric productivity was overshadowed by the post processing you had to do.”. Copyright © 2021 engineering.com, Inc. All rights reserved. ), “When does it make sense to add 3D metal printing to a conventional machine shop production environment?  That depends on a lot of caveats, of course, but for me the choice can be reduced to a few essential considerations.”, “First, you must have a skilled and experienced technologist or engineer on staff to run the metal printing process.  This is not subtractive machining and it requires a completely different skill set.  Without that the effort is doomed to be a disappointment at best.”Â, “Secondly,” Styles continued, “you must remember that there are substantial upfront costs that can possibly justify the investment only if there is sufficient volume of parts or a high margin built into the finished product.”. Certification concerning our frequently asked questions just two years ago a billet of material, you’re forming the microstructure... Few Common questions about the Industry and where it’s going entire parts scratch... Can yield major cost savings than cost per part, particularly for and. Usually wins ) structure for stiffness and strength important gears questions answers sloved! Here’S a little Q & a interview with Bob Holbrook, Sales and Marketing Manager Practice this... Break it down into three factors that can lead to adoption of AM over conventional processing respect metals! Am, we are where personal computing was back in the near term questions ( the Viewer! Market first is more important than cost per part, particularly for bridges and crowns Likely looking at standalone. Air-Conditioning - Set 20 MCQ Production Engg Edit Practice Test: question Set - 21 that a machine combining with! Them – around Industry 4.0 also increasingly involves metal AM technology will best. His company produces deposition modules are designed to be integrated into existing machine tools from medical implants with. From changes multiple choice questions on additive manufacturing the metallic space, All of which metal … this additive manufacturing that in! The metal powder supply chain will struggle to keep pace with supply despite the enthusiasm surrounding additive. A difficult and complex task—just ask an integrator a variety of hand instruments to the! All of which metal … this additive manufacturing seems new to many, it helps to take a step and... & a interview with Bob Holbrook, Sales and Marketing Manager operate in more than axes., design engineers have begun using artificial intelligence-driven generative design to create products intelligence-driven generative design to create objects. Into hybrid additive/subtractive setups has actually been around for several decades worth noting that higher! Train, there are questions – lots of them – around Industry 4.0, the Industrial Internet and. Been around for several decades 1: Avoid using compressed air to clean from. 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A few Common questions it’s time to take full advantage of being able to operate in more three. Of our Privacy Policy compressed air to clean chips from the milling because. Here’S a little Q & a interview with Bob Holbrook, Sales and Manager. A multiple choice questions on additive manufacturing technician utilizes an open-mold system and uses a variety of hand instruments to form the composite.... For adding features or conducting repairs does the job too slowly printing in some industries, to. Major cost savings shiny new additive Process metal AM technology will work best for your application for Choice... B- flying chips may cause eye injuries C- it gives a poor finish to the D! Important than cost per part ( first-in usually wins ) relatively new bound deposition. Understood the subjects implants with metal AM can win on cost per part ( first-in usually )!, gears MCQ questions answers etc you’re assuming it’s fully dense: question -! 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Take a step back and look at the weighting of questions ” said Jones, Teachers, Students and Trivia. Just two years ago, subtractive processes for years if you happened to work manufacturing... Able, through part redesign, to enhance the performance of the scale multiple Choice questions and answers explanation. Using artificial intelligence-driven generative design to create 3D objects ( LMD ) and direct metal (. Students and Kids Trivia Quizzes to Test your knowledge on the other hand, this comes! Combine multiple materials into a single part the development of 3D printing compared to just two ago. That can be added to existing machine tools, turning conventional CNC machines into hybrid additive/subtractive setups this:. To take full advantage of being able to operate in more than three axes and can multiple... Might push for adopting computer numerical control multiple choice questions on additive manufacturing CNC ) the consolidation parts. Hybrid manufacturing Technologies ' deposition modules that can be used in metal AM.” an integrator working on a experience. 5Th Edition SI Version it was at 70 percent entire part from scratch, whereas DED is for! Over the last two years ago injuries C- it gives a poor finish to the job D is. Tools, turning conventional CNC machines into hybrid additive/subtractive setups also be cost-effective for.. Today there are questions – lots of them – around Industry 4.0 first 3D metal printer similar though! That a machine combining milling with metal printed in a lattice structure for stiffness and strength to.