• 한국공작기계학회논문집
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• 제10권3호
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• pp.97-103
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• 2001

This paper has focused on the Optimization of the cutting parameters for urning operation based on the Taguchi method. Four cutting parameters. nemely, cutting speed, feed depth of cut and nose radius are optimized with consideration of the surface roughness. The design and analysis of experiments are conducted to study the performance characteristic. The effects of these parameters on the surface roughness have been investigated using signal-to-noise(S/N) ratio and analy-sis of variance(ANOVA). The experiments have been performed using coated tungsten carbide inserts without any cutting fluid. Experimental results illustrate the effectiveness of this approach.

• 한국경영과학회:학술대회논문집
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• 대한산업공학회/한국경영과학회 2006년도 춘계공동학술대회 논문집
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• pp.1071-1078
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• 2006

Robust design of products or processes is a way to produce products or processes with less variability on condition that the product specification is met, so that the ratio of nonconforming products can be as minimized as possible. In such models as robust parameter design(RPD) originated by Taguchi and response surface methodology(RSM), the variances of noise variables are assumed to be measurable. However, there are circumstances in which the experimenters are unable to measure noise variables or perhaps are not aware of what the noise variables are. In this paper, it is demonstrated through an example that Taguchi's RPD approach can be conducted within the framework of the analysis of variability, with a view to a comparison of the two methods.

• 대한용접접합학회:학술대회논문집
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• 대한용접접합학회 2009년 추계학술발표대회
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• pp.78-78
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• 2009

Glass sealing method is used glass bond as called frit in LCD, PDP process. but new sealing method is need to consider the endurance and economy. This paper present the new glass sealing method using high density gas torch in the furnace and process variable are defined by experiment. Taguchi Robust Experimental Design methods were applied for optimizing these four main processing parameters.

• 한국공작기계학회:학술대회논문집
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• 한국공작기계학회 2000년도 추계학술대회논문집 - 한국공작기계학회
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• pp.242-248
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• 2000

This paper has focused on the optimization of the cutting parameters for turning operation based on the Taguchi method. Four cutting parameters, namely, cutting speed, feed, depth of cut and nose radius are optimized with consideration of the surface roughness. The design and analysis of experiments are conducted to study the performance characteristic. The effects of these parameters on the surface roughness have been investigated using the signal-to-noise (S/N) ratio, analysis of variance (ANOVA). The experiments have been peformed using coated tungsten carbide inserts without any cutting fluid. Experimental results illustrate the effectiveness of this approach.

• 한국정밀공학회지
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• 제21권6호
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• pp.77-83
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• 2004

Cutting by a high speed laser cutting machine is one of most effective technologies to improve productivity. This paper has studied to obtain the cutting characteristics and optimal cutting conditions in a high speed feeding type laser cutting machine by Tacuchi method in design of experiments. A Lf(34) orthogonal array is adopted to study the effect of adjustment parameter. The adjustment parameters consist of cutting speed, laser power, laser output duty and assistant gas pressure. And the quality feature is selected as surface roughness of sheet metal. Variance analysis is performed in order to evaluate the effect of adjustment parameters on the quality feature of laser cutting process.

• 한국생산제조학회지
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• 제23권4호
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• pp.398-402
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• 2014

This paper presents the results of a study on the optimal footpad design for vertical climbing on acrylic surfaces with various curvatures used Taguchi methods. For a climbing robot, the adhesion system plays an important role in the climbing process. Only an appropriate adhesion strength will prevent the robot from falling and allow it to climb normally. Therefore, the footpad is a significant parameter for a climbing robot and should be studied. Taguchi methods were used to obtain a robust optimal design, where the design variables were the flat tacky elastomeric shape, area, thickness, and foam thickness of the footpad. Experiments were conducted using acrylic surfaces with various curvatures. An optimized footpad was selected based on the results of the experiments and analysis, and the stability of the wall-climbing robot was verified.

• 대한안전경영과학회:학술대회논문집
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• 대한안전경영과학회 2000년도 추계학술발표논문집
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• pp.251-254
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• 2000

The critical problem in dealing with multiple characteristics is how to compromise the conflict among the selected levels of the design parameters for each individual characteristic. In this study, First, Methodology using SN ratio optimized by univariate technique is proposed and a parameter design procedure to achieve the optimal compromise among several different response variables is developed. Second, to solve the issue on the optimal design for multiple quality characteristics, this study modelled the expected loss function with cross-product terms among the characteristics and derived range of the coefficients of the terms. The model will be used to determine the global optimal design parameters where there exists the conflict among the characteristics, which shows difference in optimal design parameters for the individual characteristics. Third, this paper propose a decision model to incorporates the values assigned by a group of experts on different factors in weighting decision of characteristic. Using this model, SN ratio of taguchi method for each of subjective factors as well as values of weights are used in this comprehensive method for weighting decision of characteristic.

• 한국산학기술학회논문지
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• 제14권7호
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• pp.3135-3141
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• 2013

본 연구에서는 유한요소해석과 다구찌 방법을 통해 높은 토크 저항력과 결합력을 갖는 클린치 스터드를 설계할 때 이에 영향을 미치는 설계 변수들의 적합한 조건을 도출하였다. 목적함수로 최대성형하중과 소재의 충만율을 고려하였으며 설계변수로 홈 높이, 로브 직경, 로브 높이 그리고 홈 깊이를 선정하였고 이들 제어인자와 마찰을 잡음인자로 하여 직교배열표를 조합하고 실험횟수별 유한요소해석을 통해 성형하중과 충만율을 평가하였다. 그리고 다구찌 방법의 S/N비를 이용하여 시뮬레이션결과를 해석하였고, 이들 해석결과로부터 최적의 조합조건을 제안하였다. 충만율에 가장 큰 영향을 주는 인자는 로브 높이, 홈 높이, 로브 직경 그리고 홈 깊이 순 임을 확인하였다.

• Communications for Statistical Applications and Methods
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• 제8권3호
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• pp.685-696
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• 2001

Robust design is an approach to reducing performance variation of response values in products and processes. In the Taguchl parameter design, the product-array approach using orthogonal arrays is mainly used. However, it often requires an excessive number of experiments. An alternative approach, which is called the combined-array approach, was suggested by Welch et. al. (1990) and studied by others. In these studies, only single response variable was considered. We propose how to simultaneously optimize multiple responses when there are correlations among responses, and when we use the combined-array approach to assign control and noise factors. An example is illustrated to show the difference between the Taguchi's product-array approach and the combined-array approach.

• 한국가스학회지
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• 제10권4호
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• pp.23-28
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• 2006

본 연구에서는 LPG 용기용 가스밸브의 강도 안전성과 몸체의 경량화 해석을 9개의 밸브모델에 대하여 유한요소해석 프로그램 MARC 및 다구찌의 실험적 설계법을 사용하였다. 가스밸브의 몸체에 작용하는 Von Mises 최대응력은 밸브에 작용하는 최대가스압력 $91kg/cm^2$을 적용하여 황동밸브 구조물의 안전성을 고찰하였다. 여기서 최대압력 $91kg/cm^2$은 LPG 가스용기의 안전계수를 고려한 것으로 안전성 해석이나 최적설계를 수행하는데 충분한 작동압력이다. 밸브몸체의 자중량을 줄이기 위해 수행된 해석은 LPG가스의 유동손실을 줄이고, 최적설계에 따라 소재가격을 낮출 수 있기 때문에 설계단계에서 고려해야 할 하나의 주요변수이다. 계산결과에 따르면, 최적설계 밸브모델은 9번이고, 이때의 최적설계 변수는 가스가 통과하는 밸브의 아래쪽 A의 반경 r=10mm, 위쪽 B의 반경 r=6mm, A와 B의 연결부 파이프 길이 l=2 mm로 결정되었다.