Optimization of processing parameters of a developed new driller system for orthopedic surgery applications using Taguchi method

2014 ◽  
Vol 76 (5-8) ◽  
pp. 1437-1448 ◽  
Author(s):  
Kadir Gok ◽  
Arif Gok ◽  
Yasin Kisioglu
Keyword(s):  
Taguchi Method ◽  
Orthopedic Surgery ◽  
Processing Parameters ◽  
Driller System

Synthesis and Study of Microcapsules with Beeswax Core and Phenol-Formaldehyde Shell Using the Taguchi Method

2021 ◽  
Vol 7 (1) ◽  
pp. 1
Author(s):  
Tejashree Amberkar ◽  
Prakash Mahanwar
Keyword(s):  
Phase Transition ◽  
Transition Temperature ◽  
Taguchi Method ◽  
Phase Change ◽  
Phase Change Material ◽  
Surfactant Concentration ◽  
Phenol Formaldehyde ◽  
Processing Parameters ◽  
Agitation Speed ◽  
Change Material

Phenol-formaldehyde shelled phase change material microcapsules (MPCMs) were fabricated and their processing parameters were analyzed with the Taguchi method. Core to shell ratio, surfactant concentration and speed of mixing are the parameters that were optimized in five levels. The optimized values for the surfactant concentration, core to shell ratio and agitation speed were 3%, 1:1 and 800 rpm, respectively. The obtained microcapsules were spherical in shape. The melting enthalpy of the MPCMs synthesized with optimized processing parameters was 148.93 J/g in 35–62 °C. The obtained temperature range of phase transition temperature can be used for storing different food articles such as chocolate and hot served foods.

Optimization of investment casting parameters for reduction of shrinkage porosity in nickel-based superalloy castings by Taguchi method

2021 ◽  
pp. 2150136
Author(s):  
Peng Zhang ◽  
Guohuai Liu ◽  
Ye Wang ◽  
Shiping Wu ◽  
Zhaodong Wang
Keyword(s):  
Taguchi Method ◽  
Investment Casting ◽  
Signal To Noise Ratio ◽  
Casting Process ◽  
Processing Parameters ◽  
Shrinkage Porosity ◽  
Pouring Temperature ◽  
Nickel Based Superalloy ◽  
Preheating Temperature ◽  
Processing Optimization

In order to improve the castings quality of nickel-based superalloy in investment casting process, especially to reduce the shrinkage porosity, the processing parameters were optimized by numerical simulation and Taguchi method. The effects of processing parameters, such as pouring temperature, pouring time and mold shell preheating temperature, on the shrinkage porosity in the turbine nozzle investment castings prepared by K477 nickel-based superalloy were investigated. The results show that the effects of the mold shell preheating temperature, pouring temperature and pouring time are main influencing factors in turn, which are verified by the evaluation of signal-to-noise ratio and the analysis of variance. Further, based on the processing optimization, a K477 alloy turbine nozzle without shrinkage porosity was prepared with the optimized parameters: pouring temperature of 1450[Formula: see text]C, mold shell preheating temperature of 1050[Formula: see text]C and pouring time of 14 s, respectively.

Optimum processing parameters of sueding fabric comfort by applying the Taguchi method and fuzzy theory

2019 ◽  
Vol 89 (23-24) ◽  
pp. 5165-5176 ◽  
Author(s):  
Chung-Feng Jeffrey Kuo ◽  
Wen-Tsung Lin
Keyword(s):  
Water Vapor ◽  
Taguchi Method ◽  
Thermal Transport ◽  
Fuzzy Theory ◽  
Signal To Noise Ratio ◽  
Processing Parameters ◽  
Optimal Combination ◽  
Fuzzy Approach ◽  
Functional Characteristics ◽  
Water Vapor Transmission

In recent years, as consumers have increasingly higher demands for the functionality of clothing, fabrics with additional functionality have been developed. The state of physical functionality experienced by a wearer under a given environmental condition is greatly influenced by the tactile, thermal and moisture transport properties of the fabric. In modern textiles, finishing is generally used to improve the appearance or other properties of fabrics. Sueding is a common finishing method. In order to meet the requirements of functionality in the process of sueding, the production process must be adjusted according to the features of the fabrics. The main method is the setting of processing parameters. This study focuses on the water vapor transmission and thermal transport, which are the main functional characteristics, and uses the fuzzy approach to acquire the combination of sueding processing parameters to optimize multiple functional characteristics. Firstly, for the main processing parameters of the sueding machine, the Taguchi method is used to obtain an orthogonal array for the experimental design. The measured water vapor transmission and thermal transport data of the fabric are used to calculate the signal-to-noise ratio. An analysis of variance is conducted to obtain the significant factors with a greater impact on functional characteristics. The fuzzy approach is used to analyze and obtain the optimal combination of processing parameters of multiple functional characteristics. This optimal combination of processing parameters is used to set the processing parameters. The reliability and reproducibility of the experiment are verified by confirmation experiments.

Computer Aided Finite Element Simulation of the Developed Driller System for Bone Drilling Process in Orthopedic Surgery

2019 ◽  
Vol 18 (04) ◽  
pp. 583-594 ◽  
Author(s):  
Kadir Gok ◽  
Arif Gok ◽  
Yasin Kisioglu
Keyword(s):  
Finite Element ◽  
Temperature Rise ◽  
Orthopedic Surgery ◽  
Soft Tissues ◽  
Experimental Results ◽  
Drilling Process ◽  
Drill Bit ◽  
Bone Drilling ◽  
Computer Aided ◽  
Driller System

Heat reveals during the bone drilling operations in orthopedic surgery because of friction between bone and surgical drill bit. The heating causes extremely important damages in bone and soft tissues. The heating has a critical threshold and it is known as 47∘C. If bone temperature value exceeds 47∘C, osteonecrosis occurs in bones and soft tissues. Many factors such as surgical drill bit geometry and material, drilling parameters, coolant has important roles for the temperature rise. Many methods are used to decrease the temperature rise. The most effective method among them is to use the coolant internally. Numeric simulations of a new driller system to avoid the overheating during the orthopedic operating processes were performed in this study. The numerical simulation with/without coolant was also performed using the finite element based software. Computer aided simulation studies were used to measure the bone temperatures occurred during the bone drilling processes. The outcomes from the simulations were compared with the experimental results. A good temperature level agreement between the experimental results and FEA simulations was found during the bone drilling process.

A study of multi-quality processing parameter optimization for sueded fabric

2016 ◽  
Vol 87 (4) ◽  
pp. 389-398 ◽  
Author(s):  
Chung-Feng Jeffrey Kuo ◽  
Wen-Tsung Lin
Keyword(s):  
Taguchi Method ◽  
Color Difference ◽  
Processing Parameters ◽  
Quality Characteristics ◽  
Gray Relational Analysis ◽  
Processing Parameter ◽  
Optimum Processing ◽  
Multiple Quality Characteristics ◽  
Response Table ◽  
Fabric Surface

Sueded fabric quality control depends on the processing parameter settings. The quality characteristics considered in this study are surface softness and color difference. The Taguchi method was combined with gray relational analysis (GRA) to optimize the multi-quality sueding processing parameter combinations. First, an orthogonal array is designed by using the design of experiments of the Taguchi method for the major processing parameters of the sueding machine. The signal/noise ratio and analysis of variance are calculated from the measured fabric surface softness and color difference data, significant factors influencing the quality characteristics obtained, and GRA used to remedy the deficiency in the Taguchi method, which is only applicable to single-quality characteristics. The optimum processing parameters of multiple-quality characteristics are obtained from the response table and response diagram of GRA. The quality of suede fabric can be controlled effectively by using the optimum processing parameters to set the processing parameters, and the 95% confidence interval validates the reliability and reproducibility of the experiment.

scholarly journals Optimization of the Cathode Arc Plasma Deposition Processing Parameters of ZnO Film Using the Grey-Relational Taguchi Method

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Shuo-Fu Hsu ◽  
Jyh-Horng Chou ◽  
Chun-Hsiung Fang ◽  
Min-Hang Weng
Keyword(s):  
Electrical Resistivity ◽  
Taguchi Method ◽  
Plasma Deposition ◽  
Optical Transmittance ◽  
Processing Parameters ◽  
Zno Thin Films ◽  
Zno Films ◽  
Arc Plasma ◽  
Cathode Arc ◽  
Grey Relational

We deposited undoped ZnO films on the glass substrate at a low temperature (<70°C) using cathode arc plasma deposition (CAPD) and the grey-relational Taguchi method was used to determine the processing parameters of ZnO thin films. The Taguchi method with an L9 orthogonal array, signal-to-noise (S/N) ratio, and analysis of variance (ANOVA) is employed to investigate the performances in the deposition operations. The effect and optimization of deposition parameters, comprising the Ar : O2gas flow ratio of 1 : 6, 1 : 8, and 1 : 10, the arc current of 50 A, 60 A, and 70 A, and the deposition time of 5 min, 10 min, and 15 min, on the electrical resistivity and optical transmittance of the ZnO films are studied. The results indicate that, by using the grey-relational Taguchi method, the optical transmittance of ZnO thin films increases from 88.17% to 88.82% and the electrical resistivity decreases from5.12×10-3Ω-cm to4.38×10-3Ω-cm, respectively.

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