This is great stuff and I'd love to read this book. The story about the soldiers on the bridge is particularly intriguing. About thirty years ago, there was a similar story about a Big Ten football stadium that had to be beefed up because students in the upper deck would sway back and forth to a cheer that happened to be very close to the the natural frequency of the structure.
Thanks Rob for sharing such good information i usually collect two to three books and then decide which to read first . After reading your post i have decided that this is going to be my next book . Its aboslutely not strange that Kuprenas wanted to become artist as well because like artist engineers are also creative people they should also think out of the box , both artist and engineer should have knowledge of material, they have imaginary skills ,they have great vision and so on.
TJ, for that reason and a bunch of others, I still prefer paper books. I'm a book lover. Have been since I was a kid. Loved books and magazines. My first library card was a beautiful thing. My first magazine subscription was just as wonderous -- Boy's Life, followed by The Magazine of Fantasy and Science Fiction.
This book is worth just for the clear explanation on Accuracy and Precision. These fundamental definitions are very important as it is important to differentiate between accuracy, precision, resolution etc. Thanks Rob for the info on this book.
Absolutely correct. Do you remember the Ford truck commercial from the 1960's, touting the benefits of "Twin I-Beam" front suspensions? The one where the truck is driven over railroad ties with long poles attached to the cab and the front wheels with two rows of light bulbs bracketing each pole. As the truck is driven over the equally spaced ties, the pole attached to the wheels is smashing lightbulbs like crazy, but the pole attached to the cab rides absolutely level and not a single lightbulb breaks, showing how smooth the ride is. Lee Iococca mentions it in his autobiography, where he asked a Ford engineer how they did it. The engineer's reply was simple: they drove the truck at the speed required to get the suspension to resonate in order to keep the cab of the truck level. If the truck's speed was above or below resonance, the rod attached to the cab also smashed the lightbulbs with abandon. This is analogous to "valve float" where the valves in an internal combustion engine don't fully close when the valve springs reach their resonant frequency.
Engineers at Fuel Cell Energy have found a way to take advantage of a side reaction, unique to their carbonate fuel cell that has nothing to do with energy production, as a potential, cost-effective solution to capturing carbon from fossil fuel power plants.
This is part one of an article discussing the University of Washington’s nationally ranked FSAE electric car (eCar) and combustible car (cCar). Stay tuned for part two, tomorrow, which will discuss the four unique PCBs used in both the eCar and cCars.
Researchers working with additive manufacturing have said multimaterial techniques will allow industry “to fabricate materials with combinations of density, strength, and thermal expansion that do not exist [yet].”
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