The economy is so bad right now that even our trash is worthless. Experts estimate that prices for recycled paper, metal and plastics have dropped 50 to 70 percent, or not even worth the while to ship them across the Pacific to China, which has imported more than 70 percent of the materials used in its recycling industry. Scrap copper peaked at $8,000 a ton in 2007, and it now brings $3,000. Some sources say paper is even down as much as 80 percent.
Recycled American scrap has been sitting in ships in Chinese ports, or scrap yards. Increasingly that recycled material will go into landfills. From a design engineering standpoint, it makes that old claim of designing products that are “recyclable” even less tenable. Even stuff that has had real value, like PET soda bottles, or high-density polyethylene milk bottles, is now struggling to find markets. So what’s happening to plastic car interiors, or engineering materials in washing machines or computers? It’s certainly not part of a tenable, economic recycling stream at least now - if it ever was.
Interviews I had with a great engineering team at a Massachusetts company this week reminded me that we really have to make decisions for ourselves about what makes sense from an environmental point of view. Just saying we specified a bioplastic, for example, doesn’t make it a good environmental choice. Or saying that we used a “recyclable” material doesn’t mean we did a good turn for the environment. We need to consider factors like how much energy did it take to ship those sub assemblies I specified? Would it have been better environmentally to have paid 5 percent more and bought from a local supplier? I’m sure there are a whole series of issues like that. And that kind of thinking is very different from the kind of marketing spin you often hear.
A recent report sponsored by the American Chemistry Council (ACC) focuses on emerging gasification technologies for converting waste into energy and fuel on a large scale and saving it from the landfill. Some of that waste includes non-recycled plastic.
Capping a 30-year quest, GE Aviation has broken ground on the first high-volume factory for producing commercial jet engine components from ceramic matrix composites. The plant will produce high-pressure turbine shrouds for the LEAP Turbofan engine.
Seismic shifts in 3D printing materials include an optimization method that reduces the material needed to print an object by 85 percent, research designed to create new, stronger materials, and a new ASTM standard for their mechanical properties.
A recent study finds that 3D printing is both cheaper and greener than traditional factory-based mass manufacturing and distribution. At least, it's true for making consumer plastic products on open-source, low-cost RepRap printers.
For industrial control applications, or even a simple assembly line, that machine can go almost 24/7 without a break. But what happens when the task is a little more complex? That’s where the “smart” machine would come in. The smart machine is one that has some simple (or complex in some cases) processing capability to be able to adapt to changing conditions. Such machines are suited for a host of applications, including automotive, aerospace, defense, medical, computers and electronics, telecommunications, consumer goods, and so on. This discussion will examine what’s possible with smart machines, and what tradeoffs need to be made to implement such a solution.