Dr. Ed Pope

Composites help needed! This is your chance to help shape future generations of compositeers by sharing some of your hard-earned lessons learned. I’m in the process of updating and expanding the chapter on “Aircraft Applications” for the ASM International Handbook 21, Composites. Here are platforms/technologies I am specifically targeting. If you worked on any of these, or know someone who worked on any of these, or if you have info about already published technical papers or articles in industry publications concerning any of these, please contact me via direct message or leave a comment below. * Boeing 787 AFP fuselage * Airbus Aircraft ATL A350 wing skin * Airbus VARTM A220 wing skin * Northrop Grumman B-21 Raider (long shot but I thought I’d check) * Boeing C-17 * Lockheed Martin F-35 Lightning II (any version, any unique composite applications) * Boeing F/A-18E/F/G co-cured/co-bonded structure * Northrop Grumman Global Hawk bonded wing structure * Cirrus SR22 and/or SF50 * Diamond Aircraft DA42 and/or DA50 RG * Epic Aircraft E1000 GX * Any other platforms/applications that you think should be featured Obviously not looking for anything proprietary or export controlled. This is a great way to get your company’s technology out there for everyone to see as well as passing on valuable lessons for the next generation of engineers who will be designing the next 50 years of composite aircraft structure. Dream big. Work hard. Help others. It’s the #LaminateLife way. And right now, LaminateLife is asking for your help. Inputs/suggestions needed prior to the end of this month. Thank you!! -Gary #composites #advancedmanufacturing #aerospace #flying

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I am thrilled to share the updated paper “PERIDYNAMIC MICROMECHANICS of composites: a review” by Valeriy Buryachenko: https://lnkd.in/grBPxDPq (02.22.2024: 79pp., 319 refs.; 07.27.2024: 89pp., 400 refs). This paper is a good background for joint research of different teams of experts in many multidisciplinary fields such as peridynamic micromechanics.

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I am thrilled to share that the paper Buryachenko V. A. (2024) “Peridynamic micromechanics of composites: a review”. J. Peridyn. Nonloc. Modeling 6, 531–601 (71pp, 378refs) is updated in   https://lnkd.in/gGU-Z9zj  as “Peridynamic micromechanics of composites: a critical review (109pp, 466refs). For the first time, local and nonlocal (strongly nonlocal and weakly nonlocal) micromechanics (called computational analytical micromechanics) of random structure composites are presented as a generalized and unified theory of blocked (or modular) structure so that the experts developing one block need not be experts in other blocks. Moreover, during the development of joint software, each block team can make any corrections in their block software at any step of its development, even without informing the partner teams about these corrections. Coordinating efforts to couple these blocks is only required for profitable team interaction. The modular structure of Peridynamic Micromechanics (PM) is a good background for effective collaboration of different teams in so many multidisciplinary areas as PM.

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The Manufacturing Technology Deployment Group (“MTDG”), which is the parent organization of the National Center for Defense Manufacturing and Machining (NCDMM), who run the America Makes program, is interested in better understanding the adoption, progression, and deployment of Polymer Additive Manufacturing (“PAM”) for industrial and commercial production.  Although polymer AM processes are becoming mature and have provided new insight and opportunities in various fields, key limitations still need to be overcome. Due in part to these limitations many organizations have not adopted and/or expanded the role of polymer additive manufacturing. MTDG is sponsoring a collaborative, in-depth Delphi investigation with persons knowledgeable about polymer additive manufacturing  to examine what barriers are limiting the adoption and progression of PAM as well as what steps need to be taken to accelerate its acceptance and usage in a broadening array of industries providing end-use industrial and commercial product applications.  This Delphi investigation is being undertaken for the benefit of the community at large and the results will be openly available to all participants. To accomplish this collaborative research effort with complete anonymity for the participants, MTDG has contracted with an expert in conducting in-depth Delphi investigations - Chuck Ptacek, an industrial psychologist with 30+ years of experience. To this end, if you are willing to be interviewed, Chuck would like to talk to you regarding your views concerning the adoption and progression of polymer additive manufacturing and will contact you to establish an appropriate time to interview you once he hears from you. Please send Chuck an email to [email protected] indicating your willingness to participate and he will contact you to schedule a mutually agreeable date/time for the interview. You will be helping AM Nation and I will personally appreciate it!   In appreciation, we will send you an executive summary of the final report and answer any questions you might have regarding the results of this in-depth Delphi investigation. Should you have any questions or concerns regarding the nature of this study, please feel free to reach me via email at [email protected]

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💡Are you attending the Advanced Manufacturing for Defense Summit in Pasadena, California? Join us on June 10th for the ASTM Short Course, "Implementing Additive Manufacturing for Critical Aerospace/Defense Applications – Supported by Standards" at the Boeing Satellite Factory. This event is held in collaboration with IDGA. Who is this for? ▪ This mini-workshop is designed for Additive Manufacturing Engineers, Structural Integrity Engineers, and Business Leaders in the #Aerospace and #Defense sectors. It focuses on the implementation of Additive Manufacturing for critical applications, providing direct relevance to these industries. What will you learn? ▪ Gain insights into the latest movements in #AdditiveManufacturing, based on global trends, to guide your business towards the right applications. You'll learn about the standards landscape, key considerations in the use of AM in aerospace and critical applications, and how to leverage digital transformation initiatives to enable industrial scale-up. Another perk: Enjoy an exclusive tour of the Boeing Satellite Factory. ❗Note that the site visit has limited availability. Book now to secure your slot! https://lnkd.in/gsMddyKh Course Instructors: Nicholas Mulé, Boeing; Richard Huff, ASTM International; Mohsen Seifi, ASTM International #AMAIDGA #AdvancedManufacturing

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Certainly! Let's explore how Lockheed Martin's mobility research and development (R&D) programs intersect with the scenarios we discussed earlier: 1. **Assured Autonomy and Systems:** - Lockheed Martin's ATL (Advanced Technology Laboratories) focuses on autonomy, robotics, and artificial intelligence³. Their work in assured autonomy aligns with the adaptability needed for spaceflight and underground living. Autonomous systems can handle resource management, adapt to changing conditions, and operate efficiently in confined spaces. - Overlay: Imagine a diagram showing an autonomous system managing resources in a small space—whether a van, underground shelter, or spacecraft. 2. **Command, Control, and Understanding (C2&U):** - ATL's C2&U research involves understanding complex systems and decision-making³. In close quarters, effective command and control are critical. Whether in a van or a bunker, efficient communication and decision processes matter. - Overlay: Visualize a network connecting van occupants, bunker residents, or astronauts, emphasizing communication hubs and decision nodes. 3. **Spectrum Operations:** - ATL explores spectrum operations, including communication, radar, and electronic warfare³. In confined environments, managing electromagnetic spectrum usage is vital. Vans, bunkers, and spacecraft all rely on communication frequencies. - Overlay: Show overlapping frequency bands representing different systems—van communication, bunker sensors, and spacecraft telemetry. 4. **Cybersecurity:** - ATL's cyber research addresses security threats and vulnerabilities³. In close quarters, protecting data and systems is crucial. Vans, bunkers, and spacecraft all face cyber risks. - Overlay: Depict a shield protecting interconnected devices in various scenarios—van electronics, bunker control systems, and spacecraft avionics. 5. **Hypersonics:** - While hypersonics primarily relate to high-speed flight, the underlying technology has applications in various domains. ATL's hypersonics research contributes to cutting-edge propulsion and materials³. - Overlay: Represent hypersonic airflow around a van, a bunker entrance, and a spacecraft reentering Earth's atmosphere. Remember, Lockheed Martin pioneers advancements in AI-driven technologies, which can enhance all these areas³. Their work contributes to global security and technological transformation. 🚀🌎🔍¹³ Source: Conversation with Copilot, 6/7/2024 (1) Advanced Technology Laboratories | Lockheed Martin. https://lnkd.in/gSWTBnde. (2) . https://lnkd.in/g4JcNp5u.

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Friday company update! The headline: Still waiting on an annealing furnace repair at the lab where I rent access. No ETA known, so I am looking for other annealing furnace options. If anyone has a furnace that can hold 1000 C for an hour in a non-oxidizing atmosphere (nitrogen or argon or vacuum) and would be willing to share, please let me know! Also, my wife has suggested (and I begin to agree) that posting both a tech topic and a company update each week is too much. I will probably dial back to posting only on Mondays, and switching between company updates and tech topics every other week. https://lnkd.in/g539YV98

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⚙️ 𝗗𝗼 𝘆𝗼𝘂 𝗸𝗻𝗼𝘄 𝗵𝗼𝘄 𝘁𝗼 𝗷𝗼𝗶𝗻 𝘁𝗵𝗲 𝗱𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝘁 𝗽𝗮𝗿𝘁𝘀 𝗼𝗳 𝗮 𝗡𝗔𝗦𝗧𝗥𝗔𝗡 𝗺𝗼𝗱𝗲𝗹? The most used joints by far are RBE2 and RBE3. You better not confuse them. I still remember my early days with NASTRAN—when I made a rookie mistake confusing RBE2 and RBE3 elements. Trust me, it wasn’t pretty, I ended up paying with 8 days of my holidays! 🔧 𝗥𝗕𝗘𝟮 𝘃𝘀. 𝗥𝗕𝗘𝟯: 𝗪𝗵𝗮𝘁’𝘀 𝘁𝗵𝗲 𝗗𝗶𝗳𝗳𝗲𝗿𝗲𝗻𝗰𝗲? •   𝗥𝗕𝗘𝟮 (Rigid Body Element 2): RBE2 elements create a rigid connection between nodes. They force all connected nodes to move together as a single rigid body. Mathematically you force the movement of several nodes (dependent) to move like the central node (independent). This is perfect when you need to simulate a stiff connection, like attaching a bracket to a structure. But be careful—using RBE2 can overly stiffen your model and lead to unrealistic stress concentrations. •   𝗥𝗕𝗘𝟯 (Rigid Body Element 3): Unlike RBE2, RBE3 elements distribute loads in a more flexible way, without adding stiffness to the model. Mathematically the move of the central node (dependent) is the weighted average of several nodes (independent). They’re ideal for simulating connections where you want to distribute loads across multiple nodes, like attaching a force to a surface area. RBE3 is great for maintaining realistic deformation while still accurately representing load distribution. 🔍 𝗟𝗲𝘀𝘀𝗼𝗻 𝗟𝗲𝗮𝗿𝗻𝗲𝗱: Each has its place in structural modeling—RBE2 for rigid connections and RBE3 for flexible load distributions. Understanding when to use each is key to accurate simulations. #Engineering #FiniteElementAnalysis #NASTRAN #StructuralAnalysis #RBE2 #RBE3 (*) Image credit: Nader Zamani in his Youtube channel

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Echoing the words of Matthew Draper: Are you a small investment casting supplier looking to get qualified to produce parts for the Air Force? ICAM can help with that. Are you an new additive supplier that wants to make parts for INDOPACOM sustainment? ICAM can help with that. Do you need to get a NAVSEA welding qualification complete? ICAM can help with that. Are you an existing supplier that wants to expand the scope of your qualification? ICAM can help with that. Do you want to enter the DIB but CMMC compliance costs are holding you back? ICAM can help with that. Apply now!

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In Oct 2022, Alameda Applied Sciences Corporation (AASC) sold its patented Metal Plasma Thruster (MPT) business to Benchmark Space Systems (BSS), while continuing its development for NASA under SBIR contracts. AASC and Benchmark have now agreed to a new business framework in which Benchmark will continue marketing and sales of the MPT via a non-exclusive license, while AASC will continue its development and sales of the MPT to increase MPT performance, allowing it to address a growing market in Low Earth (LEO) and Very Low Earth (VLEO) orbits. AASC and Benchmark will also develop a Hybrid thruster configuration, where Benchmark's chemical propulsion systems are combined with the MPT, to offer satellite operators a unique capability for rapid collision avoidance combined with the MPT’s small impulse bits, for highly precise attitude control and fine positioning. The chemical and electric propulsion units will share a common avionics platform to provide plug-and-play mobility to satellite operators.  Ryan McDevitt, Benchmark CEO said that the new business relationship allows Benchmark to focus on its primary chemical propulsion product line while benefiting from AASC's sole focus on electric propulsion. Mahadevan Krishnan, President of AASC, welcomed the new arrangement and said he looks forward to serving customers in the burgeoning market for CubeSats and Small Satellites in LEO and VLEO. Together, BSS and AASC aim to provide a unique Hybrid (chemical/electric) mobility capability to satellites.

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🚀 👉 Lockheed Martin New Additive Manufacturing Facility https://bit.ly/3ZwqQn4 👈 🚀 Lockheed Martin Opens New 16,000-square-foot Additive Manufacturing Facility in Texas US Defense firm Lockheed Martin has opened a new 16,000-square-foot additive manufacturing facility. It will be located at the company’s Missiles and Fire Control (MFC) site in Grand Prairie, Texas, which produces the precision-guided M142 High Mobility Artillery Rocket System (HIMARS). 🚀 Additive manufacturing also allows Lockheed Martin to fabricate parts that cannot be produced using conventional manufacturing techniques. One example includes a hydraulic manifold traditionally machined from a large aluminum block. The design freedom afforded by additive manufacturing allowed the firm to unlock more complex geometries. This translated to more direct and better-flowing pathways between hydraulic connections, improving performance and saving weight. 🚀 Lockheed Martin fellow Brian Kaplun stated that 3D printing allows Lockheed Martin to “rapidly iterate and manufacture all of our products, resulting in savings and design freedom for all of our customers.” He added, “AM lives in the digital world and this allows us to support our customers in a far more nimble and responsive fashion than if we were using traditional design and manufacturing methods.” #3DPrinting #additiveManufacturing #aerospace #defence #manufacturing #industry #automotive #medical #prosthetics #healthcare #construction #space #future #now

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Pratt & Whitney recently shared how it has been advancing #metal #additivemanufacturing for the development of the TJ150 engine. By relying on an AM technique called #unitization, Pratt & Whitney engineers have reduced the total part count from over 50 to just a handful. Read more below 👇 #military #engines Mentions: @Chris Johnson @GATORWORKS https://lnkd.in/e__PtviC

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Question for the additive geeks. Does anyone know what data set is used to create the tensile requirements in ASTM standards for additive metals? ASTM F3001 for example. How many tensile bars from how many prints are required to generate the minimum tensile properties? I have been googling for 20 mins and i figure the LinkedIn hive mind is more efficient!

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