Life cycle engineering connects the engineers who grapple with the efficiencies of production processes, machine design, and process chains with the industrial ecologists who develop more over-arching methods of environmental assessment. In a recent issue of the Journal of Industrial Ecology, experts explore the latest research on sustainable manufacturing and how life cycle engineering is being used to reduce environmental impact.
A team of researchers at Louisiana Tech Univ. has developed an innovative method for using...
Printing whole new organs for transplants sounds like something out of a sci-fi movie, but the...
Materials like solid gels and porous foams are used for padding and cushioning, but each has its...
In May 2014, a private company in China, WinSun, printed 10 full-size houses using 3-D printers in the space of a day. The process utilized quick-drying cement and construction water to build the walls layer-by-layer. The company used a system of four 10-m-by-6.6-m-high printers with multi-directional sprays to create the houses.
Imagine your religious beliefs lied between you and your life. This is what happened in mid-April to Julie Penoyer, a 50-year-old U.K. heart patient and Jahovah’s Witness. Following her religious beliefs, her request when undergoing open-heart surgery was to not receive donated blood products.
MIT engineers have fabricated a new elastic material coated with microscopic, hairlike structures that tilt in response to a magnetic field. Depending on the field’s orientation, the microhairs can tilt to form a path through which fluid can flow; the material can even direct water upward, against gravity. Researchers say structures may be used in windows to wick away moisture.
Traditional lithography is based on a simple principle: Oil and water don’t mix. The method, first developed by an actor in Bavaria in 1796, used a smooth piece of limestone on which an oil-based image was drawn and overlayed with gum arabic in water. During printing, the ink was attracted to the oil, and was repelled by the gum.
The global 3-D scanning market is estimated to grow from $2.06 billion in 2013 to $4.08 billion by 2018, at a CAGR of 14.6% from 2013 to 2018, according to a MarketsandMarkets report. Recent trends in the industry show 3-D scanning as improving, with a huge demand. And 3-D scanning with services like reverse engineering, rapid prototyping and quality inspection, makes it suitable for most verticals.
Scientists at Northwestern Univ. have developed a new technique for creating non-equilibrium systems, which experience constant changes in energy and phases, such as temperature fluctuations, freezing and melting, or movement. The method, which involves injecting energy through oscillations to force particles to self-assemble under non-equilibrium conditions, should help us understand the fundamentals of this mysterious topic.
Marilyn Minus, a materials expert and assistant professor at Northeastern Univ., is exploring directed self-assembly methods using carbon nanotubes and polymer solutions. So far, she’s used the approach to develop a polymer composite material that is stronger than Kevlar yet much lighter and less expensive. Minus is now expanding this work to incorporate more polymer classes: flame retardant materials and biological molecules.
A research group based in Japan has developed a new methodology that can easily and precisely control the timing, structure, and functions in the self-assembly of pi-conjugated molecules, which are an important enabling building block in the field of organic electronics. One of the key steps is keeping these molecules in a liquid form at room temperature.
Experiments aimed at devising new types of photodetectors have been triggered by the increasing use of optoelectronic devices. Researchers in China have proposed a new type of infrared photodetector made from zinc oxide and silicon. Its nanoporous nature, synthesized by a simple sol-gel method, allows it to be responsive to infrared wavelengths.
In wind farms across North America and Europe, sleek turbines equipped with state-of-the-art technology convert wind energy into electric power. But tucked inside the blades of these feats of modern engineering is a decidedly low-tech core material: balsa wood.
Imagine a material with the same weight and density as aerogel—a material so light it's called “frozen smoke”—but with 10,000 times more stiffness. This material could have a profound impact on the aerospace and automotive industries as well as other applications where lightweight, high-stiffness and high-strength materials are needed.
Researchers have developed a technique that might be used to produce "soft machines" made of elastic materials and liquid metals for potential applications in robotics, medical devices and consumer electronics. Such an elastic technology could make possible robots that have sensory skin and stretchable garments that people might wear to interact with computers or for therapeutic purposes.
Lawrence Livermore National Laboratory researchers have developed a new and more efficient approach to a challenging problem in additive manufacturing—using selective laser melting, namely, the selection of appropriate process parameters that result in parts with desired properties.
Thirty years have passed since 3-D printers first appeared, but only recently have they hinted at a new era of manufacturing. The first working 3-D printer was created in 1984 by Chuck Hull of 3D Systems Corp. This early device, based on stereolithography, gave way to the first truly practical 3-D printing technology patented by the Massachusetts Institute of Technology in 1993.
The humble sewing machine could play a key role in creating "soft" robotics, wearable electronics and implantable medical systems made of elastic materials that are capable of extreme stretching. New stretchable technologies could lead to innovations including robots that have human-like sensory skin and synthetic muscles and flexible garments that people might wear to interact with computers or for therapeutic purposes.
Against the backdrop of today’s burgeoning 3-D printing landscape, with an ever-increasing number of machines popping up, MIT Media Lab spinout Formlabs has carved out a precise niche. Combining a highly accurate (but usually expensive) light-based printing technique with engineering ingenuity, the Formlabs team invented a high-resolution 3-D laser printer, called the Form 1, that’s viewed as an affordable option for professional users.
At this year’s IEEE International Conference on Robotics and Automation, a research team introduced a new wrinkle on the idea of printable robots: bakable robots. In two new papers, the researchers demonstrate the promise of printable robotic components that, when heated, automatically fold into prescribed 3-D configurations.
Although the potential uses for graphene seem limitless, there has been no easy way to scale up from microscopic to large-scale applications without introducing defects. Researchers in Chicago and Korea have recently developed a supersonic spray system that produces very small droplets of graphene which disperse evenly, evaporate rapidly, and reduce aggregation tendencies. And, to the researchers’ surprise, it also eliminates defects.
WinSun, a private company located in eastern China, has printed 10 full-size houses using a 3-D printer in the space of a day. The process utilizes quick-drying cement and construction water to build the walls layer-by-layer. The company used a system of four 10-m-by-6.6-m-high printers with multi-directional sprays to create the houses.
Thirty years have passed since 3-D printers first appeared, but only recently have they hinted at a new era of manufacturing. The first working 3-D printer was created in 1984 by Chuck Hull of 3D Systems Corp. This early device, based on stereolithography, gave way to the first truly practical 3-D printing, or “3DP”, technology patented by the Massachusetts Institute of Technology in 1993.
For nearly a century, electrophoretic deposition (EPD) has been used as a method of coating material by depositing particles of various substances onto the surfaces of various manufactured items. Since its earliest use, EPD has been used to deposit a wide range of materials onto surfaces. This process works well, but is limited. EPD can only deposit material across the entire surface and not in specific, predetermined locations, until now.
Nanoengineering researchers at Rice Univ. and Nanyang Technological Univ. in Singapore have unveiled a potentially scalable method for making one-atom-thick layers of molybdenum diselenide—a highly sought semiconductor that is similar to graphene but has better properties for making certain electronic devices like switchable transistors and light-emitting diodes.
Using an inexpensive inkjet printer, Univ. of Utah electrical engineers produced microscopic structures that use light in metals to carry information. This new technique, which controls electrical conductivity within such microstructures, could be used to rapidly fabricate superfast components in electronic devices, make wireless technology faster or print magnetic materials.
Using an inexpensive 3-D printer, biomedical engineers have developed a custom-fitted, implantable device with embedded sensors that could transform treatment and prediction of cardiac disorders. An international team has created a 3-D elastic membrane made of a soft, flexible, silicon material that is precisely shaped to match the heart’s epicardium, or the outer layer of the wall of the heart.
Engineers at Oregon State Univ. have developed a new approach toward sustainable manufacturing that begins on the factory floor and tries to encompass the totality of manufacturing issues, including economic, environmental and social impacts. This approach, they say, builds on previous approaches that considered various facets of sustainability in a more individual manner.
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