@article{ramasubramanian_noori_lee_2003, title={Evolution of mechatronics into a graduate degree program in the United States: The NC State University master of science program with mechatronics concentration}, volume={19}, number={4}, journal={International Journal of Engineering Education}, author={Ramasubramanian, M. K. and Noori, M. N. and Lee, G. K.}, year={2003}, pages={519–524} } @article{farer_seyam_ghosh_batra_grant_lee_2003, title={Forming shaped/molded structures by integrating meltblowing and robotic technologies}, volume={73}, ISSN={["0040-5175"]}, DOI={10.1177/004051750307300103}, abstractNote={ A novel system is described that forms three-dimensional (3D) molded nonwoven structures through proper integration of a laboratory scale meltblown unit with a small die and a six-axis robot. The 3D fiberweb structures can be formed by deposition of fibers from the die of the meltblown unit, which is manipulated by the robot, on any desired 3D mold. The mold rotational and surface speeds can be controlled by an additional external axis. The die is connected by two flexible hoses to the melt extruder of the meltblown unit and a hot air supply system. This system directly sprays fibers onto a 3D mannequin mold to produce structures from polypropylene polymers. With varying degrees of success. several robot manipulation algorithms of fiber deposition on the mold are developed to accurately control the basis weight uniformity the fiberwebs. A rule-based control algorithm using a linear variable differential transducer to map the mold contour results in the greatest fiberweb basis weight uniformity. }, number={1}, journal={TEXTILE RESEARCH JOURNAL}, author={Farer, R and Seyam, AM and Ghosh, TK and Batra, SK and Grant, E and Lee, G}, year={2003}, month={Jan}, pages={15–21} } @inproceedings{zhang_lorenc_bernold_lee_1997, title={A computer-controlled multipurpose bridge maintenance robotic system}, booktitle={Computer applications in industry and engineering: Proceedings of the ISCA 10th international conference, San Antonio, Texas, U.S.A., December 10-12, 1997}, publisher={Cary, NC: ISCA}, author={Zhang, T. and Lorenc, S. J. and Bernold, L. E. and Lee, G. K.}, year={1997}, pages={90–93} } @article{reddy_jasper_mcgregor_lee_1997, title={Effects of temperature and salt on dye mixtures in the batch dyeing process}, volume={67}, ISSN={["0040-5175"]}, DOI={10.1177/004051759706700206}, abstractNote={For real-time control, it is usually desirable to formulate a mathematical model of the process to be controlled. Such a model assists in the selection of control parameters and enhances the understanding of the underlying processes. A mathematical model for two-dye mixtures is developed comprising a diffusion based model to account for dye penetration into the fiber and a nonlinear distribution function at the fiber surface based on the Langmuir isotherm. Since the behavior of dyes in mixtures often deviates from their behavior when used alone, the dyeing process cannot be modeled by a simple combination of single dye models. Numerical simulations of the behavior of direct cotton dye mixtures under varying conditions of temperature and salt concentration are also presented, and compared with experiments.}, number={2}, journal={TEXTILE RESEARCH JOURNAL}, publisher={SAGE Publications}, author={Reddy, M and Jasper, WJ and McGregor, R and Lee, G}, year={1997}, month={Feb}, pages={109–117} }