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Just finished L2 : Modules for Civil Aeronautics

The unique and world-class research facilities and expertise at the U.S. Army Engineer Research and Development Center (ERDC), served as proving grounds for construction materials that may ultimately be deployed in the Arctic and other cold environments. A team comprised of engineers from the ERDC Geotechnical and Structures Laboratory (GSL) and the Cold Regions Research Engineering Laboratory (CRREL) recently conducted several full-scale placements of JetCon JC400 rapid-setting concrete to better understand how the material works in cold weather. The test, which was part of the Office of the Under Secretary of Defense for Research and Engineering’s Foreign Comparative Testing program. JetCon JC400 is manufactured in South Korea. The testing was conducted in the CRREL Frost Effects Research Facility where ambient temperatures were held at approximately 25 degrees Fahrenheit. Placements were instrumented with temperature sensors at locations and depths within the test slab. Core samples were extracted for strength testing, and overall stiffness was evaluated with a heavy weight deflectometer. “The testing is expected to be incorporated into tactics, techniques and procedures, or TTPs, for using JetCon JC400 in subfreezing temperatures,” said Will Carruth, P.E., a GSL research civil engineer. “Use of an accelerator — aluminum sulfate — was shown to be effective at mitigating the effects of the cold temperatures, which otherwise would have slowed the set time.” Carruth said leveraging CRREL’s cold weather testing capabilities was a crucial component to the project. “[CRREL] possessed the technical knowledge and experience needed to properly investigate placing rapid-setting concrete in cold temperatures as well as the required facilities,” he said. JetCon JC400 previously performed well under simulated aircraft traffic in temperate climates but had not been evaluated in sub-freezing temperatures. While initial laboratory testing was helpful, laboratory samples lack the thermal mass to allow the hydration process to initiate, which is needed to properly represent the curing conditions of a larger concrete repair. The temperature data collected will also inform a modeling effort that will give users the ability to predict set time based on the temperatures of the ambient air, mix water, dry materials and the ground surrounding the repair. United States Department of Defense Office of the Under Secretary of Defense for Research and Engineering US Army US Army Corps of Engineers #concrete #materials #arctic #environment #geotechnical #engineer #engineers #engineering #civilengineering #structuralengineering #science #innovation #technology #research #researchanddevelopment #PowerofERDC

We're taking a DEEP DIVE with advanced #manufacturing technology to Modernize our Nation's Infrastructure - one of top 10 USACE #researchanddevelopment priorities! This week our U.S. Army Engineer Research and Development Center (ERDC) Geotechnical and Structures Laboratory team is happy to highlight a new #partnership with Virginia Tech focused on novel underwater additive friction stir deposition (#AFSD) technology. With much of our #USACE critical civil works #infrastructure having important components that require #repair that are #underwater - we're focused on ways we can do more inspection and repair in the field and in-the-wet conditions. These repairs are often costly and challenging due to requirements to work in-the-dry. The new project, led by Dr. Hang Yu, will focus on how this novel technology can be applied for in-situ repairs for everything from #corrosion to #fatigue cracking. #innovation #materialsscience #scienceandtechnology #hokies Zackery McClelland

Automated testing of pipes and their parts according to the HRN EN 877:2022 standard is currently being carried out with the new equipment of the Laboratory of Materials Protection at the Faculty of Mechanical Engineering and Naval Architecture, University of Zagreb, in accordance with the test conditions from point 5_7_2_7. The test consists of 1500 cycles of alternating hot and cold water passes according to the individual program of one cycle as follows: a) 30 l (+/- 1 l) of water at a temperature of 93 °C (+/- 2 °C) over a period of 1 min, at a constant rate of flow; b) rest and drain period of 1 min; c) 30 l (+/- 1 l) of water at a temperature of 15 °C (+/- 5 °C) over a period of 1 min, at a constant rate of flow; d) rest and drain period of 1 min. The new equipment additionally completed the possibilities of laboratory tests and was co-financed by the European Regional Development Fund under the Operational Program Competitiveness and Cohesion 2014–2020". Project name: Development of anti-corrosion protection system for multi-purpose pipes, grant number KK_01_1_1_07_0045. Project partner: Ferro-Preis d.o.o.

The word "engineer" has its roots in the Latin word "ingeniator," meaning a contriver or deviser. The term evolved over time and gained prominence during the Middle Ages. In medieval Europe, an "engine" referred to a military machine or mechanical device. By the 14th century, the term "engineer" began to be associated with those who constructed military engines and siege weaponry. As technology progressed, the role of engineers expanded beyond military applications to include civil engineering, mechanical engineering, and other specialized fields. During the Industrial Revolution in the 18th and 19th centuries, the term became more widely used to describe professionals involved in designing and building machinery and infrastructure. Today, "engineer" encompasses a broad range of disciplines and plays a crucial role in shaping modern society through technological innovation.

The word ‘engineer’ was originally associated with ‘military engineering’. It was only when the word was used to refer to public works which were non-military works that the term ‘civil engineer’ was introduced. Initially all engineering was covered under the term ‘civil engineering’ as opposed to ‘military engineering’. Gradually, with the increasing size and complexity of projects, other disciplines of engineering emerged over the years. With them their codes of practice also developed to cover the new materials and technologies. #civilengineering #civilengineer #structural #engineeringexcellence #history

At Soto Consulting Engineers, we are proud of the ???????????????????????? ???????????? our company possesses. We believe these skills are essential for fostering a thriving Australian defence industry. ???????? ?????? ?????????? ????????????? ???????????????????? ?????????????????????? → We have a deep understanding of the design and performance of mechanical systems, and an ability to ensure these systems are reliable, efficient and meet the rigorous requirements of the naval industry. The benefits of this skill set include enhanced?operational capabilities and reduced maintenance expenses for naval vessels. ??????????????????????????????????????????? → We are mindful of the harsh environments in which naval vessels operate. Therefore, our expertise in structural engineering allows us to design resilient and sturdy ships that endure extreme conditions. This fosters the safety and longevity of naval vessels, which contributes to mission success, and delivers major advantages to the defence industry. ???????????? ?????????????? ???????????????? → Our team utilises advanced finite element analysis techniques to simulate and analyse complex structural and mechanical systems. The defence industry will benefit from this expertise as SOTO can pinpoint potential weaknesses, streamline processes to reduce weight and enhance overall performance. ?????????????? ??????????????????→ At SOTO, we create detailed 3D models and simulations of the complex systems. The models can be utilised for virtual prototyping, system integration testing and training purposes. The models benefit the defence sector through identifying potential issues early in the development process as well as helping to visualise design concepts. Our expertise in mechanical and structural engineering, along with our ability to adapt finite element analysis and complex modeling, equips us to address challenges and innovate solutions. We are confident in our capacity to help naval contractors craft reliable, efficient and compliant vessels, all while managing low material and manufacturing costs. These transferable skills are what positions SOTO as a prepared SME for the defence sector. ???? ?????? ?????????????? ??????????! #EverythingEngineered #DefenceReady #TransferableSkills #SOTO #EngingeeringExcellence #AustralianDefence #Shipbuilding #NavalCompliance

Thanks, Shelley Tingle, for pulling together this featurette on Dr. Yan Ding and the other the other features scheduled to appear on ERDC's LinkedIn platform this week. Happy Engineers Week! #engineer #engineers #engineering #science #innovation #technology #research #researchanddevelopment

Structural Engineers: Scientists or Soldiers? My whole family has a military background. Dad: Retired Air Force Sergeant. Mum: She teaches in the Air Force. Cousins: Deployed with the UN to help Haiti after the earthquake The military thrives on discipline and structure. And while I respect that, I’ve learned one thing… Structural engineers shouldn’t always follow rigid rules. We’re also scientists. Scientists experiment. They question, test, and tweak. And that’s what we should be doing. Take advice from senior engineers, sure. But also listen to other perspectives. Test. Experiment. Find YOUR best solution. Not every problem has one answer. Sometimes the "right" way for one project might not work for another. Be curious. Don’t settle. Don’t be a puppet—be a problem-solver. PS: Just found this photo from 2010—back in the concrete lab at uni, molding cylindrical test specimens for compressive strength tests. Funny how those early days shaped so much of what I do now! Repost for others ??

From the ancient pyramids of Egypt to the complex Roman road networks to the Great Wall of China, humans have long sought to build momentous structures to show our dominance on the planet. All these amazing feats couldn’t have been possible without an adept knowledge of the basic principles of physics and mathematics. Little wonder civil engineering is regarded as one of the oldest engineering disciplines, second only to military engineering.