Showing papers in "Mechanical Engineering in 2009"
Journal Article•
TL;DR: The International Nanofluid Property Benchmark Exercise (INPBE) as discussed by the authors was held in 1998, where the thermal conductivity of identical samples of colloidally stable dispersions of nanoparticles or "nanofluids" was measured by over 30 organizations worldwide, using a variety of experimental approaches, including the transient hot wire method, steady state methods, and optical methods.
Abstract: This article reports on the International Nanofluid Property Benchmark Exercise, or INPBE, in which the thermal conductivity of identical samples of colloidally stable dispersions of nanoparticles or “nanofluids,” was measured by over 30 organizations worldwide, using a variety of experimental approaches, including the transient hot wire method, steady-state methods, and optical methods. The nanofluids tested in the exercise were comprised of aqueous and nonaqueous basefluids, metal and metal oxide particles, near-spherical and elongated particles, at low and high particle concentrations. The data analysis reveals that the data from most organizations lie within a relatively narrow band (±10% or less) about the sample average with only few outliers. The thermal conductivity of the nanofluids was found to increase with particle concentration and aspect ratio, as expected from classical theory. There are (small) systematic differences in the absolute values of the nanofluid thermal conductivity among the various experimental approaches; however, such differences tend to disappear when the data are normalized to the measured thermal conductivity of the basefluid. The effective medium theory developed for dispersed particles by Maxwell in 1881 and recently generalized by Nan et al. [J. Appl. Phys. 81, 6692 (1997)], was found to be in good agreement with the experimental data, suggesting that no anomalous enhancement of thermal conductivity was achieved in the nanofluids tested in this exercise.
881 citations
Journal Article•
TL;DR: In this paper, the authors discuss sustainable technolkogy is on the minds of engineers, but cost weighs in even heavier than sustainable technology, and propose a solution to the problem.
Abstract: Sustainable technolkogy is on the minds of engineers, but cost weighs in even heavier. By Alan S. Brown
14 citations
TL;DR: In this paper, the authors show that the distances that can separate virtual teams are only the beginning of the distance that separates virtual teams, and that geography is not the end of it.
Abstract: When it comes to the distances that can separate virtual teams, geography is only the beginning.
10 citations
TL;DR: Now that it's a matter of economics as well as political correctness, manufacturers are embracing environmentally friendly practices as discussed by the authors, which is a good sign for the future of green manufacturing practices.
Abstract: Now that it's a matter of economics as well as political correctness, manufacturers are embracing environmentally friendly practices.
9 citations
Journal Article•
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TL;DR: In this paper, the ME curriculum allows only 10 weeks to devote to computer programming, which is why Davic made its choice, and what do yoy teach if the ME can only teach 10 weeks of computer programming?
Abstract: What do yoy teach if the ME curriculum allows only 10 weeks to devote to computer programming ? This is why UC. Davic made its choice.
7 citations
TL;DR: The transfer of R&D resources to low-wage countries may portend major changes for engineers in developed nations as mentioned in this paper, which is a concern for many engineers in the US.
Abstract: The transfer of R&D resources to low-wage countries may portend major changes for engineers in developed nations.
7 citations
TL;DR: Brown et al. as mentioned in this paper layered simple behaviors to create autonomous robots that can interact with the world around them by layering simple behaviors, and they achieved state-of-the-art performance.
Abstract: By layering simple behaviors, engineers are creating autonomous robots that can interact with the world around them. By Alan S. Brown.
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TL;DR: It began 150 years ago this month in Pennsylvania as mentioned in this paper and some forecasts say that it has only decades left to go, while others predict that it will be decades before it ends.
Abstract: It began 150 years ago this month in Pennsylvania. Some forecasts say that it has only decades left to go.
TL;DR: In this article, the authors discuss the potential of immersive simulators to make fundamanental engineering practices more interactive and interactive. But simulators are no longer MERELY the purview of video games.
Abstract: IMMERSIVE, INTERACTIVE SIMULATED ENVIRONMENTS ARE NO LONGER MERELY THE PURVIEW OF VIDEO GAMING. THEY HAVE THE POTENTIAL TO REMAKE FUNDAMENTAL ENGINEERING PRACTICES.
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TL;DR: Some surprising discoveries are made in the quest of practically frictionless mechanical operation this article, and some surprising discoveries have been made in this article. But they are not necessarily related to our work.
Abstract: Some surprising discoveries are made in the quest of practically frictionless mechanical operation.
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TL;DR: In one place issues ranging from regulatory compliance to finance influence the success of a product as mentioned in this paper. Although there is no single tool to guide engineers through it all, people are working on it.
Abstract: IN ONE PLACE Issues ranging from regulatory compliance to finance influence the success of a product. Although there is no single tool to guide engineers through it all, people are working on it. By Jean Thilmany
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TL;DR: In this paper, a program aimed at inspiring under-served children teaches engineers to communicate the essence of their work to motivate them to communicate with their children and to communicate their vision of the future.
Abstract: A program aimed at inspiring under-served children teaches engineers to communicate the essence of their work.
Journal Article•
Journal Article•
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TL;DR: In this article, an examination of an elite athlete has led to a rethinking of the way the fastest runners accelerate and how all of us walk, and how to walk in a race.
Abstract: An examination of an elite athlete has led to a rethinking of the way the fastest runners accelerate-and how all of us walk.
Journal Article•
TL;DR: For instance, Thilmany as mentioned in this paper argues that mass customization is part-way here; when the rest will arrive is anyone's guess, and that customization is only part of the process.
Abstract: Mass customization is part-way here; when the rest will arrive is anyone's guess. By Jean Thilmany, Associate Editor