1,375,831 research outputs found
On the Originality and the Fruitfulness of the Encounter Between Phenomenology and Japanese Philosophy
No full textThe application of Taguchi approach to optimise the processing conditions on bonnet polishing of CoCr
No full textThis paper applied the Taguchi approach to investigate the effects of each polishing
parameter and obtain the optimal processing conditions for CoCr alloy polishing. The polishing medium was 1µm diamond paste with Microcloth(polishing cloth). Surface finish parameter Sa was chosen as criterion for optimization. The experimental result indicates that the optimal polishing condition for CoCr alloy polishing is 5deg of precess angle, 800 rpm of head speed, 0.2mm of tool offset and 1.5 bar of tool pressure. With this optimal condition, a confirmatory experiment was conducted. The surface roughness Sa reduced from initial 24nm to 7nm and reduction ratio was 72.5% which was very close to the estimated ratio 64%
Parameter optimization by Taguchi Methods for finishing advanced ceramic balls using a novel eccentric lapping machine
No full textThe final finishing process of advanced ceramic balls used in hybrid precision bearings constitutes two-thirds of the total manufacturing cost, and hence effective and economic finishing methods and processes are critical to their widespread application. A novel eccentric lapping machine is designed and manufactured. Hot isostatically pressed silicon nitride ball blanks (diameter 13.25 mm) are used to investigate the feasibility of accelerating the ball finishing process while maintaining high surface quality. Taguchi methods are used during the first step of finishing to optimize lapping parameters; the L9 (3(4)) four-parameter, three-level orthogonal array is used to design the experiment. Experimental results reveal that this novel eccentric lapping method is very promising; a material removal rate of 40 mum/h is achievable. The optimum lapping condition is found to be high speed, high load and high paste concentration with 60 mum diamond particles. The analysis of variance shows that the most significant lapping parameter is lapping load, which accounts for 50 per cent of the total, followed by lapping speed (31 per cent); the particle size and paste concentration only account for 12 per cent and 7 per cent respectively. A comparison with previous lapping experiments and the mechanism of material removal are also discussed briefly
A Taguchi method application for the part routing selection in Generalized Group Technology: A case Study
No full textCellular manufacturing (CM) is an important application of group technology (GT) that can be used to enhance both flexibility and efficiency in today’s small-to-medium lot production environment. The crucial step in the design of a CM system is the cell formation (CF) problem which involves grouping parts into families and machines into cells. The CF problem are increasingly complicated if parts are assigned with alternative routings (known as generalized Group Technology problem). In most of the previous works, the route selection problem and CF problem were formulated in a single model which is not practical for solving large-scale problems. We suggest that better solution could be obtained by formulating and solving them separately in two different problems. The aim of this case study is to apply Taguchi method for the route selection problem as an optimization technique to get back to the simple CF problem which can be solved by any of the numerous CF procedures. In addition the main effect of each part and analysis of variance (ANOVA) are introduced as a sensitivity analysis aspect that is completely ignored in previous research.Cellular Manufacturing; generalized Group Technology; route selection problem; Taguchi method; ANOVA; sensitivity analysis
Using Taguchi method to optimize welding pool of dissimilar laser welded components
No full textIn the present work CO2 continuous laser welding process was successfully applied and optimized for joining a dissimilar AISI 316 stainless steel and AISI 1009 low carbon steel plates. Laser power, welding speed, and defocusing distance combinations were carefully selected with the objective of producing welded joint with complete penetration, minimum fusion zone size and acceptable welding profile. Fusion zone area and shape of dissimilar austenitic stainless steel with ferritic low carbon steel were evaluated as a function of the selected laser welding parameters. Taguchi approach was used as statistical design of experiment (DOE) technique for optimizing the selected welding parameters in terms of minimizing the fusion zone. Mathematical models were developed to describe the influence of the selected parameters on the fusion zone area and shape, to predict its value within the limits of the variables being studied. The result indicates that the developed models can predict the responses satisfactorily
Delineamento de experimentos utilizando as tecnicas de Taguchi para formulação de massa ceramica
No full textDissertação (mestrado) - Universidade Federal de Santa Catarina, Centro TecnologicoDesenvolvimento e aplicação das técnicas de delineamento estatístico de experimentos aplicadas à formulação de massa cerâmica para pavimento. Utilização da metodologia de Taguchi em revestimento cerâmico de monoqueima. Estudo de propriedades físico-mecânicas de matérias primas cerâmicas. Otimização da formulação
Ivan Taguchi interviewed by Trent Dyck
No full textIvan Taguchi relates his experience as a Japanese Canadian person growing up in the Okanagan Valley in the 1940s and 1950s
Data for: Internal Loading in Stormwater Ponds as a Phosphorus Source to Downstream Waters
No full textThis dataset supports the journal article "Internal Loading in Stormwater Ponds as a Phosphorus Source to Downstream Waters" by Taguchi et al. (Submitted).
Included are water quality field data, laboratory sediment phosphorus release experiment data, and laboratory sediment phosphorus fractionation data.
This work is licensed under a Creative Commons Attribution 4.0 International License.
The RPBCWD 98-Pond Dataset was produced by the Riley Purgatory Bluff Creek Watershed District and not the dataset authors. Contact www.RPBCWD.org for further information.Stormwater ponds remove phosphorus through sedimentation before releasing captured water downstream. Internal loading can impair net phosphorus removal but is understudied in these highly modified systems. Using a combination of methods, we assessed the prevalence and potential causes of sediment phosphorus release in urban ponds. In a three-year, 98-pond dataset, nearly 40% of ponds had median water column total phosphorus concentrations exceeding the 95% confidence interval for runoff values (0.38 mg/L), suggesting widespread internal loading. In a subsequent intensive monitoring study of four ponds, strong stratification prevented spring and summer diurnal mixing, resulting in persistent hypolimnion anoxia (<1 mg/L dissolved oxygen). Incubated sediment cores from seven ponds demonstrated high anoxic phosphorus release. Sediment analysis revealed high labile organic and redox-sensitive phosphorus fractions with release potential at anoxia onset. Our analyses suggest phosphorus accumulated in stormwater ponds is highly sensitive to internal loading, reducing net removal and contributing to downstream eutrophication.Minnesota Pollution Control AgencyNational Science Foundation (grant number 00039202)Taguchi, Vinicius J; Olsen, Tyler A; Natarajan, Poornima; Janke, Benjamin D; Gulliver, John S; Finlay, Jacques C; Stefan, Heinz G. (2019). Data for: Internal Loading in Stormwater Ponds as a Phosphorus Source to Downstream Waters. Retrieved from the University Digital Conservancy, https://doi.org/10.13020/p338-vx49
An investigation and analysis of Process Parameters for EDM Drilling machine using Taguchi method
No full textNot availabl
Optimization of Parameters of a Planetary Gearbox Using the Taguchi-Grey Relational Analysis
No full textOptimization of parameters of central gears of a planetary gearbox was performed in this study. Since the optimization of multi-performance characteristics is more complex compared to optimization of a single-performance characteristics, the Taguchi-Grey analysis was used. That approach combines the Taguchi orthogonal array L27 with the Grey relational analysis to determine the influence of the material, module and gear width on the safety coefficient of the planetary gearbox. A Grey relational grade obtained from the Grey relational analysis is used as the performance characteristics in the Taguchi method and Analysis of variance (ANOVA). The optimal combination of parameters for the safety coefficient values was obtained, when the value of the Grey relational grade is 1. Based on the ANOVA analysis, it was established that the most influential parameter is the module, then the gear width and the least influential one is the material
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