You might not think of cement as an engineering material because of its brittleness. But a new engineered cement composite developed at the University of Michigan may cause you to think again. Specially coated fibers replace stone aggregate and act as ligaments that tie the cement together under stress. Engineering Professor Victor Li comments: “How the fiber works inside the composite—especially when loading is excessive and the crack starts to break—needs to be just right. it means that fibers don’t come out too easily. Otherwise you don’t have a composite per se. On the other hand you don’t want them bonded too strong. If that was the case you wouldn’t allow the fiber to slide; you would break the fiber. In either case it would return to a brittle material as opposed to the ductile behavior we are looking for.“
Two new technologies from Stratasys, created in partnership with Boeing, Ford, and Siemens, will bring accurate, repeatable manufacturing of very large thermoplastic end products, and much bigger composite parts, onto the factory floor for industries including automotive and aerospace.
These new 3D-printing technologies and printers include some that are truly boundary-breaking: a sophisticated new sub-$10,000, 10-plus materials bioprinter, the first industrial-strength silicone 3D-printing service, and a clever twist on 3D printing and thermoforming for making high-quality realistic models.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies.
You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived.
So if you can't attend live, attend at your convenience.