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Category: engineering – Page 186

In the new era of generative design in architecture, engineering, and construction, designers and builders will use computers not just to describe buildings, but cocreate them.

Before GPS, if you got lost while driving your car, you had to swallow your pride and stop to ask for directions. With the help of the innate intelligence of Google Maps or Waze, you can let a machine compute the best route so you can concentrate on what’s really important—driving.

In the case of architects, engineers, and contractors, their computers will help navigate the design and construction process, so they can focus on making successful projects and great buildings as a result.

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Careful sample preparation, electron tomography and quantitative analysis of 3D models provides unique insights into the inner structure of reverse osmosis membranes widely used for salt water desalination wastewater recycling and home use, according to a team of chemical engineers.

These reverse osmosis membranes are layers of material with an active aromatic polyamide layer that allows molecules through, but screens out 99 to 99.9 percent of the salt.

“As water stresses continue to grow, better membrane filtration are needed to enhance water recovery, prevent fouling, and extend filtration module lifetimes while maintaining reasonable costs to ensure accessibility throughout the world,” said Enrique Gomez, professor of chemical engineering, Penn State. “Knowing what the material looks like on the inside, and understanding how this microstructure affects water transport properties, is crucial to designing next-generation membranes with longer operational lifetimes that can function under a diverse set of conditions.”

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90% of natural disasters are flood related. Flooding will occur and people will build in areas that can and will flood so how can we change the outcomes in the future? Why not have floating homes that are anchored to their site but rise and lower with the flood with zero damage? I am about to start a new company that can manufacture those homes. If you want to know more contact me directly.

Engineers at Ruhr-Universität Bochum have developed a new statistical model that predicts how likely extreme flood events are in Germany. In contrast to earlier models, they distinguish between several types of floods with different causes, such as heavy rain, snow or spatially extended rain events with long durations. The model improves the assessment of flood risks and to plan appropriate protective measures. The team led by Professor Andreas Schumann from the Institute of Hydrology, Water Resources Management and Environmental Engineering reports on its work in the Bochum science magazine Rubin.

In their model, the hydrologists distinguish between three main types of flood, which stem from different causes: heavy , which lasts one or two days; prolonged rain over four to five days; and snow-related flooding.

In general, annual maximum values are analysed statistically without distinguishing between the different types of flooding. However, this is precisely what is required in order to estimate the likelihood of flooding under consideration of the regional conditions. Brief, localised heavy rain can, for instance, cause rivers to break their banks if their catchment is small, but for large river basins events with long durations are more relevant, which result in an overlay of flood waves from tributaries.

Continue reading “Predicting flood risk better” | >

SpaceX’s CEO shrugs off 20 years of NASA research.

SORRY, ELON. To be ready for human occupants, Elon Musk has long called Mars a “fixer-upper of a planet.” But according to a new NASA-sponsored study, a better description might be a “tear-down.” The scientists behind that project say it’s simply not possible to terraform Mars — that is, change its environment so that humans can live there without life support systems — using today’s technology.

BUILDING AN ATMOSPHERE. Mars has a super thin atmosphere; a human unprotected on the surface of Mars would quickly die, mostly because there’s not enough atmospheric pressure to prevent all your organs from rupturing out of your body (if you survived a little longer, you could also suffocate from lack of oxygen, freeze from low temperatures, or get fried from too much ultraviolet radiation).

This study, published Monday in the journal Nature Astronomy, considers how difficult it would be to increase the atmospheric pressure on the Red Planet enough so that humans can walk on Mars’s surface without a pressurized suit and, ideally, without a breathing apparatus.

Continue reading “Scientists Say We Can’t Terraform Mars. Elon Musk Says We Can” | >

Researchers are paving the way to total reliance on renewable energy as they study both large- and small-scale ways to replace fossil fuels. One promising avenue is converting simple chemicals into valuable ones using renewable electricity, including processes such as carbon dioxide reduction or water splitting. But to scale these processes up for widespread use, we need to discover new electrocatalysts—substances that increase the rate of an electrochemical reaction that occurs on an electrode surface. To do so, researchers at Carnegie Mellon University are looking to new methods to accelerate the discovery process: machine learning.

Zack Ulissi, an assistant professor of chemical engineering (ChemE), and his group are using machine learning to guide electrocatalyst discovery. By hand, researchers spend hours doing routine calculations on materials that may not end up working. Ulissi’s team has created a system that automates these routine calculations, explores a large search space, and suggests new alloys that have promising properties for electrocatalysis.

“This allows us to spend our time asking science questions, like, ‘How do you predict the properties of something,’ ‘What is the thermodynamic model,’ ‘What is the model of the system,’ or ‘How do you represent the system?’” said Ulissi.

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Quantum particles can be difficult to characterize, and almost impossible to control if they strongly interact with each other—until now.

An international team of researchers led by Princeton physicist Zahid Hasan has discovered a state of matter that can be “tuned” at will—and it’s 10 times more tuneable than existing theories can explain. This level of manipulability opens enormous possibilities for next-generation nanotechnologies and quantum computing.

“We found a new control knob for the quantum topological world,” said Hasan, the Eugene Higgins Professor of Physics. “We expect this is tip of the iceberg. There will be a new subfield of materials or physics grown out of this. … This would be a fantastic playground for nanoscale engineering.”

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The German start-up company ELiSE creates the DNA of a technical part. Based on the DNA, automated design processes are used to find the best solution which considers all predefined constraints and which is produced by additive manufacturing. Meet ELiSE at ESA’s Start-ups Zone powered by ESA space solutions at IAC 2018.

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Many congrats to @Enrico Dini 🔝🍾🎉🎉🎉🥇Enrico reached that outcome after an eclectic professional path: a graduate of Civil Engineering at Pisa University, Enrico has spent his entire career in automation and robotics. In 2004, Enrico envisioned the endless potential of the use of additive manufacturing techniques at architectural scale as a means to affordably reach architectural beauty. Since then, Enrico has dedicated his entire professional career in the pursuit of his passion to 3D print beautiful architecture.

At the Digital Concrete 2018 Conference, several awards will be presented. Award categories include: Best Proceedings Paper, Best Presentation, and Best Poster. Each category will have an award encompassing all entries, and one for students only. The awards will be given at the conference closing on Wednesday, 12 September, before lunch.

In addition, two Pioneering Achievement Awards will be given to two pioneers in the field of digital fabrication with concrete, Prof. Behrokh Khoshnevis and Enrico Dini. Information for the two awardees is seen below.

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We have a vacancy for a senior/principal mechanical engineer capable of providing specialist consultancy/mechanical design analysis, research and development support to clients in both space and terrestrial markets.

The role involves leadership of all aspects of multiple mechanism and tribology projects from identification of opportunities and where necessary funding sources, through preparation of winning proposals to execution of the work in-line with cost, schedule and quality requirements.

Working mainly with bespoke, precision mechanical systems, the main purpose of the role is to provide specialist engineering consultancy and research/development support to external clients involved in space and vacuum mechanism development. In addition, the job-holder will be expected to provide conceptual/architectural design and development leadership for in-house devices, new products and test facility developments.

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With threats of sea level rise, storm surge and other natural disasters, researchers from Florida Atlantic University’s College of Engineering and Computer Science are turning to nature to protect humans from nature. They are developing innovative ways to guard coastlines and prevent scouring and erosion from waves and storms using bioinspired materials that mimic mangrove trees found along shores, rivers and estuaries in the tropics and subtropics. Growing from a tangle of roots that twist their way out of the mud, mangrove trees naturally protect shorelines, shelter coastal ecosystem habitats and provide important water filtration. In many cases, these roots trap sediments flowing down rivers and off the land, helping to stabilize the coastline.

Certain root systems even have the ability to dissipate tidal energy through unique hydrological flows and divert the energy of water in different directions reducing risk of coastal damage. Yet, to date, few studies have examined the fluid dynamics such as flow structure and on mangrove roots.

For a study, published in the American Physical Society’s journal, Physical Review Fluids, researchers singled out the red mangrove tree (Rhizophora mangle) from more than 80 different species of mangroves, because of its robust network of roots that can withstand extreme environmental conditions. The red mangrove provided the researchers with an ideal model for bioinspired shoreline applications.

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