Browsing by Subject "TPS"
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Item Local temperature distributions during Selective Laser Flash Sintering(2020-06-24) Chen, Alex, M.S. in Engineering; Kovar, Desiderio; Beaman, Joseph J.Selective Laser Flash Sintering (SLFS) is the combination of heat application with a laser and an applied electric field to induce flash sintering. The temperatures during this process are relatively unknown due to the rapid process. An understanding of the temperatures during SLFS can lead to more knowledge about the driving mechanisms behind the process. A numerical and an analytical model were developed for laser heat application of yttria-stabilized zirconia during SLFS. The thermal conductivity of yttria-stabilized zirconia and aluminum nitride were measured in powder and pressed pellet form and inputted into the numerical model. Experimental results from thermocouple measurements were compared to simulation. Laser absorptivity was also estimated from experimental results comparing the heating of graphite coated and uncoated YSZ and AlN. The SLFS process was also investigated using thermal and high-speed camerasItem Toyota production system(2011-08) Vyas, Kewalkumar Chandrakant; Nichols, Steve Parks, 1950-; McCann, BruceBackground: There are various manufacturing methods and systems in automobile industries throughout the world. Of these, many practice lean manufacturing methods. The most effective and influential to all of these methods is the “Toyota Production System” (TPS). The TPS was invented by Toyota's founding fathers in 1930 in Japan. The TPS continuously evolves making it a benchmark for the manufacturing, product development or any other sector of industry. It is fully based on “Socio-Technical” systems in a continuously changing manufacturing environment. It is about learn through doing and also about tacit knowledge and not explicit procedural knowledge. Outcome: The Toyota Production System is called “The Toyota Way” and it actually gives you a roadmap or more of a compass to set your direction and helps you steer your own course. Toyota has internally developed simple but effective tools and consistently trains their team members to implement those in all aspects of manufacturing and designing their vehicle. For example, Toyota has developed Kaizen or continuous improvement through which they eliminate waste that adds cost without adding value no matter how small it is. Toyota is known for the quality of their products. Not surprisingly their product is made at a significantly lower price within a given segment of the auto market. It is a result of hard work, innovation, and a Japanese work culture of generations at Toyota all across the world. Conclusions: Through theoretical analysis backed by my personal observations as an employee and from the sales figures of Toyota automobiles, I firmly believe that Toyota backs up its philosophy of long term benefits over short term financial goals. The right processes will produce right results. It is also one of the top companies among their group of long term suppliers as Toyota challenges them and helps them to improve. Initial quality and customer satisfaction surveys of J.D.Powers and Associates for Toyota and Lexus vehicles have won numerous awards since 2001.