When faculty member Leo Castagno of Brigham Young University discovered that many engineering students could write a program in C++ but couldn't tell the difference between a screw and a bolt, he wasn't exactly surprised. "In the traditional engineering curriculum, fasteners are covered in a single class," he says. "But I will tell you that there is a lot more to the technology than a person could possibly imagine." A former engineer and welder himself, Castagno's primary goal is to expose students to more than just pitches and thread counts. So he is expanding a process class that he teaches from just the basics of welding and chip cutting to include joining processes—in a very real-world kind of way. "This isn't a spectator sport, you know," he stresses. "I want to expose students to as many different kinds of fasteners as I can get my hands on." For starters, Penn Engineering has contributed a variety of fasteners to the school, free-of-charge. The idea is for students to gain some hands-on experience with them. Castagno is thrilled. But just in case some students may be contemplating not having to hit any books for the class, he says that the final exam will include at least some theory.
An in-depth survey of 700 current and future users of 3D printing holds few surprises, but results emphasize some major trends already in progress. Two standouts are the big growth in end-use parts and metal additive manufacturing (AM) most respondents expect.
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