• 제목/요약/키워드: Taguchi DOE

검색결과 40건 처리시간 0.031초

강건성을 고려한 모니터 장식패널 사출품의 휨 최소화 (Warpage Minimization in the Injection Molded Decorating Panel of Monitor by Considering Robustness)

  • 권오관;박종천;김경모
    • 한국CDE학회논문집
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    • 제9권4호
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    • pp.351-360
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    • 2004
  • An optimal robust design methodology has been developed to minimize the warpage in a decorating panel of monitor molded by the plastic injection. For the associated methodology, the Taguchi's Design Of Experiment (DOE) based on orthogonal arrays and Signal-to-Noise Ratio is combined with commercial simulation tools f3r injection molding. An optimal robust design solution is statistically resulted from the computational simulation. The related experiment was done for evaluations of the warpage in the decorating panel part of monitor. This research showed that the warpage under the applied optimal design conditions was comparatively reduced.

실험계획법을 이용한 초소성 성형/확산접합의 공정설계 (Process Design of Superplastic Forming/Diffusion Bonding by Using Design of Experiment)

  • 송재선;강영길;홍성석;권용남;이정환;김용환
    • 소성∙가공
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    • 제16권2호
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    • pp.144-149
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    • 2007
  • The superplastic forming/diffusion bonding(SPF/DB) is widely used in the automotive and aerospace industry because it has great advantage to produce complex, light and strong parts. But the superplastic forming process requires much forming time and generates excessive thinning in the thickness distribution of formed part. It is necessary to minimize trial and error for SPF/DB Process. Finite element analysis using $L_{18}$ orthogonal may table of Taguchi method for 3-Sheet D/B process is carried out. Through the study, effect of process parameters, such as DH region size, thickness and friction coefficient, is evaluated and the optimum condition is derived.

MoldFlow를 이용한 신발 사출금형 러너부 형상 최적화 (Shoemoulds Runner Shape Optimization using MoldFlow)

  • 류미라;서영백;문병주;박흥식
    • 한국정밀공학회:학술대회논문집
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    • 한국정밀공학회 2003년도 춘계학술대회 논문집
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    • pp.1483-1486
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    • 2003
  • Injection mold is a manufacturing process used to produce the various parts of complicated shape at a low cost. Many factors such as, section shape, resin and mold temperature, filling time, etc, affect on the quality of injection part during injection molding process. The precent study, was carried out the shrinkage analysis of shoes injection mold to optimize runner shape based on filling and packing pressure with MoldFlow. Taguchi design and analysis of variance are used to optimize injection mold design.

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다구찌 기법을 이용한 선형 모터의 최적 설계 (Optimum Design of Linear Motor by Using Taguchi Method)

  • 설진수;이우영;임경화
    • 한국소음진동공학회:학술대회논문집
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    • 한국소음진동공학회 2005년도 추계학술대회논문집
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    • pp.192-195
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    • 2005
  • Nanometer operating linear motor is difficult to control the nano-positioning because of the vibration between structures changing of mechanical friction force happened by properties of the vibration and heat caused by operating of a mover. Therefore, it is required to analysis the vibration and heat about a mover. In this paper, we will analyze the property of vibration through analyzing by using FEM a mover of linear motor developed in the non-load situation and suggest the direction of optimal design about a mover by using method of DOE, also try to find the solution to operate the linear motor stabilized through the reducing weight of mover considering the vibration.

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DFSS기법을 이용한 차량 엔진마운팅 시스템 최적화 (The Optimization of Vehicle Engine Mounting System Using DFSS(design for six sigma) Technique)

  • 박운환;송윤철
    • 한국소음진동공학회논문집
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    • 제20권3호
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    • pp.235-241
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    • 2010
  • Engine Mount plays an important role which supports engine, isolates vibration from engine and blocks the vibration from road. Development of engine mount for NVH costs great a deal. So, the cost of development being reduced, the way developed effectively engine mount using DFSS technique is proposed in this paper. CTQ(critical to quality) is vibration and parameter is dynamic stiffness of mounts. The core parameters are selected with TPA(transfer path analysis) technique. It uses design of experiments(DOE) or Taguchi Methods to optimize parameter values and reduce variation. And then, this paper shows the result of improvement for vibration in the developing vehicle.

다구찌 실험계획을 이용한 트랙터 캐빈 프레임의 최적설계 (Optimal Design of Tractor Cabin Frame Using Design of Experiment of Taguchi)

  • 장효성;이부윤
    • 한국산학기술학회논문지
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    • 제16권11호
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    • pp.7377-7384
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    • 2015
  • 농업용 트랙터는 전도 사고 발생 시 운전자를 보호하기 위해 전도보호구조(ROPS: Roll Over Protective Structures)의 역할을 할 수 있어야 한다. 본 연구에서는 ROPS 강도시험 규격을 만족하는 트랙터 캐빈 프레임의 제작 기간과 비용을 줄이기 위해서 유한요소해석과 최적설계를 수행하였다. 해석 결과로부터 얻은 변위와 주 변형률의 크기를 통해 캐빈 프레임의 초기설계안은 ROPS 강도시험에 합격하는 것으로 나타났다. 또한 캐빈 프레임의 경량화 설계안을 도출하기 위하여 다구찌 실험계획을 이용해 최적설계를 수행하였다. 이를 통하여 캐빈 프레임 무게가 초기설계안보다 7% 저감된 최적설계안을 도출하였다.

다구찌 방법을 적용한 Off-road 디젤 엔진의 분사조건 및 EGR 율 최적화에 관한 연구 (Study on Optimization of Fuel Injection Parameters and EGR Rate of Off-road Diesel Engine by Taguchi Method)

  • 하형수;안중규;박찬수;강정호
    • 한국자동차공학회논문집
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    • 제22권7호
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    • pp.84-89
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    • 2014
  • Not only the emission regulation of on-road vehicle engine, but also emission regulation of off-road engine have been reinforced. It is the reason of wide application of emission reduction technology for off-road engines. In this study, optimization of engine parameters (Injector hole number, Injection timing and EGR rate) for reduction of NOx and smoke emissions were conducted by using the analysis of sensitivity and S/N ratio of Taguchi method(DOE). As results, this paper shows optimum value of the parameters for NOx and smoke emission reduction. From the result of reproducibility verification, it is final that the prediction value of NOx and smoke has the error of below 10%. Consequently, the method and results of this study will be used for quantitative reference to EGR control mapping in next study.

실험 계획법을 적용한 세라마이드 고함량의 수화 액정형 베시클의 최적설계 (Design Optimization of Hydrated Liquid Crystalline Vesicles Containing a High Content of Ceramide Using DOE)

  • 신주영;진병석
    • 한국응용과학기술학회지
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    • 제39권5호
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    • pp.623-631
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    • 2022
  • 실험 계획법을 활용하여 세라마이드가 고함량으로 함유된 수화 액정형 베시클의 입자 사이즈에 영향을 미치는 인자를 분석하고 혼합물 조성의 최적화를 시도하였다. 베시클 입자 사이즈에 영향을 주는 주요 변수로 제조 온도, 에탄올 양, 초음파 시간을 각각 정하고, 다구찌 방법의 S/N비 산출과 ANOVA 분석을 통해, 이들 변수들이 입자 사이즈에 미치는 영향을 살펴보았다. 또한 혼합물 실험 계획법의 심플렉스 중심 설계에 따라, 베시클 막을 구성하는 세 지질 성분, 인지질(HPC), 콜레스테롤(Chol), 세라마이드(Cer)의 혼합 조성 실험을 수행하였다. 실험에서 얻어진 데이터로부터 회귀분석을 실시하여 모델식을 구하고, 베시클 입자 사이즈를 최소로 만들기 위한 세 지질 성분의 최적 혼합 조성은 HPC(0.6), Chol(0.1), Cer(0.3)으로 구해졌다.

인터넷 전화의 사용자 관점 품질 최적화를 위한 강건 설계 기법 연구 (Robust Design Methodology for Optimizing Perceived QoS of VoIP)

  • 윤협상;최수현;김성준
    • 산업공학
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    • 제22권1호
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    • pp.95-103
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    • 2009
  • During the past few years, design of experiments (DOE) has been gaining acceptance in the telecommunications research community as a mean for designing and analyzing experiments economically and efficiently. In addition, the need for introducing a systematic robust design methodology (i.e., one of the most popular DOE methodologies) to network simulations has been increasing. In this paper, we present an architecture of voice over IP (VoIP) application and the E-Model for calculating the perceived quality of service (QoS). Then, we apply the Taguchi robust design methodology to optimize the perceived QoS of VoIP application, and describe the detailed step-by-step procedures. We have used ns-2 simulator to collect experimental data in which the SN ratio, a robustness measure, is analyzed to determine an optimal design condition. The analysis shows that "initial delay time in playout buffer" is a major control factor for ensuring robust behaviors of the perceived QoS of VoIP. Finally, we verify the proposed optimal design condition using a confirmation experiment.

다구찌법을 이용한 WBK(Wire-woven Bulk Kagome)의 최적설계 (Optimal design of an Wire-woven Bulk Kagome using taguchi method)

  • 최지은;강기주
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2008년도 추계학술대회A
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    • pp.13-19
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    • 2008
  • A Wire-woven Bulk Kagome (WBK) is the new truss type cellular metal fabricated by assembling the helical wires in six directions. The WBK seems to be promising with respect to morphology, fabrication cost, and raw materials. In this paper, first, the geometric and material properties are defined as the main design parameters of the WBK considering the fact that the failure of WBK is caused by buckling of truss elements. Taguchi approach was used as statistical design of experiment(DOE) technique for optimizing the design parameters in terms of maximizing the compressive strength. Normalized specific strength is constant regardless of slenderness ratio even if material properties changed, while it increases gradually as the strainhardening coefficient decreases. Compressive strength of WBK dominantly depends on the slenderness ratio rather than one of the wire diameter, the strut length. Specifically the failure of WBK under compression by elastic buckling of struts mainly depended on the slenderness ratio and elastic modulus. However the failure of WBK by plastic failed marginally depended on the slenderness ratio, yield stress, hardening and filler metal area.

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