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Full-Text Articles in Engineering

Evaluation Of The Effects Of Powder Coating Cure Temperatures On The Mechanical Properties Of Aluminum Alloy Substrates, C. Maldonado, D. Diaz, J. Ranallo, R. Painter, W. Dahir, D. Hassouna, B. Gayer, E. Toss, I. Martinez, P. Stoyanov, J. Ogren, E. W. Lee, D. Piatkowski, Omar S. Es-Said Feb 2009

Evaluation Of The Effects Of Powder Coating Cure Temperatures On The Mechanical Properties Of Aluminum Alloy Substrates, C. Maldonado, D. Diaz, J. Ranallo, R. Painter, W. Dahir, D. Hassouna, B. Gayer, E. Toss, I. Martinez, P. Stoyanov, J. Ogren, E. W. Lee, D. Piatkowski, Omar S. Es-Said

Mechanical Engineering Faculty Works

The effects of curing temperature, based on new, low-temperature powder coating methods and traditional high-temperature powder coating methods, were studied. Heat-sensitive aluminum alloys (2024-T3, 6061-T6, and 7075-T6) were subjected to two different heat-treatment cycles, which were based on temperatures of 121 and 204 degrees C. Findings indicate that although both cure temperatures achieved powder coatings adhesion and thickness appropriate for industrial uses, the high-temperature cure treatment negatively affected the mechanical properties.


Abrasiveness Of Boron Carbide Coatings, Matthew Siniawski Jan 2009

Abrasiveness Of Boron Carbide Coatings, Matthew Siniawski

Mechanical Engineering Faculty Works

No abstract provided.


Vapor Generation In A Nanoparticle Liquid Suspension Using A Focused, Continuous Laser, R. A. Taylor, P. E. Phelan, Todd Otanicar, R. J. Adrian, P. S. Prasher Jan 2009

Vapor Generation In A Nanoparticle Liquid Suspension Using A Focused, Continuous Laser, R. A. Taylor, P. E. Phelan, Todd Otanicar, R. J. Adrian, P. S. Prasher

Mechanical Engineering Faculty Works

This letter discusses experimentation with optically induced phase change in nanoparticle liquid suspensions-commonly termed nanofluids. Four different types of nanofluids at five concentrations were exposed to a similar to 120 mW, 532 nm laser beam to determine the minimum laser flux needed to create vapor. Laser irradiance was varied between 0-770 W cm(-2). While the experiments were simple, they involved many complex, interrelated physical phenomena, including: subcooled boiling, thermal driven particle/bubble motion, nanoparticle radiative absorption/scattering, and nanoparticle clumping. Such phenomena could enable novel solar collectors in which the working fluid directly absorbs energy and undergoes phase change in a single …


Computational And Experimental Investigation Of The Flow Structure And Vortex Dynamics In The Wake Of A Formula 1 Tire, John Axerio, Gianluca Iaccarino, Emin Issakhanian, Chris Elkins, John Eaton Jan 2009

Computational And Experimental Investigation Of The Flow Structure And Vortex Dynamics In The Wake Of A Formula 1 Tire, John Axerio, Gianluca Iaccarino, Emin Issakhanian, Chris Elkins, John Eaton

Mechanical Engineering Faculty Works

The flowfield around a 60% scale stationary Formula 1 tire in contact with the ground in a closed wind tunnel was examined experimentally in order to assess the accuracy of different turbulence modeling techniques. The results of steady RANS and Large Eddy Simulation (LES) were compared with PIV data, which was obtained within the same project. The far wake structure behind the wheel was dominated by two strong counter-rotating vortices. The locations of the vortex cores, extracted from the LES and PIV data as well as computed using different RANS models, showed that the LES predictions are closest to the …