Ahmet Selamet, a professor of mechanical engineering at The Ohio State University (Columbus, OH), and his students are helping automotive engineers design new types of pipe adapters that fit into an automotive engine's air intake ductwork to reduce vehicle noise. A car's intake and exhaust systems contain branched pipes. "The pipes generate sound just like a flute or other wind instrument," says Selamet. "My investigation includes the basic physics that lead to the formation of whistles as well as understanding the effective devices and strategies to suppress them." Selamet's technique for eliminating noise is the use of various shapes for deflecting wind away from the coupling interfaces. In experiments, his team reduced whistling sound by 30 dB. For more information, call Selamet at (614) 292-4143 or visit the University's web site at www.osu.edu.
What should be the perception of a product’s real-world performance with regard to the published spec sheet? While it is easy to assume that the product will operate according to spec, what variables should be considered, and is that a designer obligation or a customer responsibility? Or both?
Biomimicry has already found its way into the development of robots and new materials, with researchers studying animals and nature to come up with new innovations. Now thanks to researchers in Boston, biomimicry could even inform the future of electrical networks for next-generation displays.
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.