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Showing 1 to 20 of 24 for “"Orthogonal Array"”.
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APPLICATION OF TAGUCHI'S ORTHOGONAL ARRAY IN AN EXPERIMENT FOR FORMULATION OF CEMENTITIOUS REPAIR MATERIAL
… mortar with target properties using Taguchi's orthogonal array technique. Each of the eleven factors was studied at two levels. The base formula was taken as follows: CFL = 55.0, CaSO4 = 32.5, OPC = 285.0, CaCO3 = 157.5, Silica sand= 414.6, Resin= 22.5, Casein= 8.0, Low cellulose= 0.75, …
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A Novel Automatic History Matching Method and Upscaling Study of Cyclic Solvent Injection Process for Post-Chops Heavy Oil Reservoirs
… by integrating a population database and orthogonal array with the GA to improve the efficiency and effectiveness of the algorithm. Because of the existence of a population database, the running time with the MGA method was significantly reduced by nearly 75%, compared to that with the GA …
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Feasibility and optimization of dissimilar laser welding components
… materials in industry through applying a Taguchi orthogonal array design as a DOE approach to design the experiments, develop mathematical models and optimize the welding operation. This was achieved by controlling selected welding parameters; laser power, welding speed and focus position, to …
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Ensembles of Adaptive One-Factor at-a-Time experiments : methods, evaluation, and theory
… form of experimentation, namely a single orthogonal array (full and fractional factorial designs), which is equally resource intensive. Comparisons between the two experimental algorithms are conducted using a hierarchical probability meta-model (HPM) and an illustrative case study. The …
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A Method for Systematically Generating Tests from Object-Oriented Class Interfaces
… the commercial white-box testing tool Jtest, Orthogonal Array Testing Strategy (OATS), and test cases generated at random. The five approaches were applied across a sample of eleven java classes selected from java.util.*. Experimental results indicate that the two versions resulting from this …
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Optimization of new semi-automatic TIG welding process for surface quality through taguchi method
… that can influence the weld bead result. Taguchi orthogonal array L9 (Minitab 16) was used to determine the amount of runoff and the analysis of samples. The result for surface roughness was found to be better with an average value of Ra 2.96 µm for single bead and Ra 3.08 µm for padding bead when …
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Fabrication and characterisation of Cobalt Chromium Molybdenum (CoCrMo) foams using slurry method
… slurry method in CoCrMo foam preparation by the orthogonal array L9 method. The slurry of CoCrMo is prepared by the mixing the binder materials and distilled water for an hour. Followed by mixing and stirring the CoCrMo powder for another 1 hour until it becomes slurries. Polyurethane (PU) foam …
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Performance properties optimization of triaxial ceramic-palm oil fuel ash by employing Taguchi design and flower pollination algorithm
… and flexural strength. Mainly, the Taguchi L18 orthogonal array was used as the design of experiment. Primarily, this research successfully attained the POFA layer formation for the triaxial ceramics. It was concluded that POFA could be successfully applied as filler material in triaxial ceramic …
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The Design and analysis of a HA/PLA pedicle screw for spinal fusion
… method was used to create an arranged L18 orthogonal array of a model simultaneously applying a bend and pull-out test. These simulations were used to calculate two objective values for analysis. Artificial neural networks were used to estimate an optimum design which had the lowest surface …
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Development and characterization of electrically conductive thermoplastic based composite materials for fuel cell bipolar plates
… configurations. A full factorial design of L-27 Orthogonal Array (OA) was used as a Design of Experiment (DOE) to evaluate the effect of the filler and the possibility of any interactions between them. The experimental data were interpreted by the Analysis of Variance (ANOVA) to evaluate the …
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Genetic Algorithms, Orthogonal Arrays and Diploid Chromosomes
… of genetic algorithms. The operators exploit the orthogonal arrays of Taguchi method. An operator that uses orthogonal arrays to create initial populations of genetic algorithms was developed. For binary encoded genetic algorithms it was found to be unreliable but is advantageous if it is used in …
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Trophic and Competitive Interactions among Egg Parasitoids of Stink Bugs
… of their coexistence assessed. Third, an L9 orthogonal array (OA) design was used to rank the influence of host egg mass parameters on parasitoid behaviour and development. Finally, the temporal pattern of parasitoid development in H. halys was examined using a DNA-based approach (PCR) and …
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Additive manufactured biodegradable and biocompatible polymeric nanocomposite scaffolds for bone tissue engineering applications
… filaments were optimized using Taguchi’s orthogonal array experimental design method to achieve the optimal mechanical properties and structural integrity. The 3D printed nanocomposite bone tissue scaffolds were characterized to assess their mechanical and biological properties. The …
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Optimised solder interconnections in crystalline silicon (c-Si) photovoltaic modules for improved performance in elevated temperature climate
… finite element modelling (FEM), Taguchi L25 orthogonal array and analytical techniques. The investigated RIFs are operating temperature, material combination and interconnection geometry. Garofalo creep relations and temperature dependent Young’s Modulus of Elasticity are used to model solder …
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STUDIES ON THE ANALYSIS AND THE FATE OF ORGANIC POLLUTANTS IN THE ENVIRONMENT
… chromatographic analysis of phenolic compounds. Orthogonal array designs were applied to the optimization of gas chromatographic analysis of water-containing samples and liquid chromatographic separation of over 30 pesticides. The experimental design method was also used to systematically examine …
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Integrated optimization of hybrid steam-solvent injection in post-CHOPS reservoirs with wormhole networks and foamy oil behaviour under uncertainty
… algorithm (GA) is then integrated with the orthogonal array (OA) and Tabu search (TS) to maximize the objective function by rationalizing the injection and production parameters and simultaneously retarding the displacement front to extend the reservoir life under uncertainty. In a given …
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Row-column factorial designs and mutually orthogonal frequency rectangles
… of the qᵏ factorial design in an m × n array. We say that the design has strength t if each row and column is an orthogonal array of strength t. We denote such a design by Iₖ (m,n,q,t). A frequency rectangle of type FR(m,n;q) is an m × n array based on a symbol set S of size q, such that …
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Hydrothermal liquefaction of spirulina with aqueous phase recirculation
… Based on the Taguchi design concept, an L9 orthogonal array is chosen for the experiments. The results show that the best HTL operating conditions for maximum yield of the oil are a temperature of 320 ℃, a retention time of 60 min, ethanol content of 15 wt.%, and a solid ratio of 20 wt.%. …
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POLYMERIC MEMBRANE DEVICES AND AUTOMATION - DESIGNS FOR INNOVATIVE STUDY IN MICROSCALE ANALYTICAL TECHNIQUES FOR ENVIRONMENTAL ANALYSIS
This dissertation presents the development of miniaturized sample preparation techniques and procedures for environmental analysis. Various applications of the developed techniques are also demonstrated. The miniaturized sample preparation approaches under study comprise of electromembrane …
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