• 대한기계학회논문집A
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• 제21권12호
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• pp.2073-2080
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• 1997

Recently, the plane strain puch stretching test(called PSST) has been developed and used successfully in the evaluation of the press formability of automotive steel sheets. In this paper, the optimum punch geometry of the original PSST tool was investigated by the FEM analysis. The puch length, crown and corner radius are chosen to be optimized according to the Taguchi's experiment technique with the $L_4$ orthogonal array.

• 한국복합재료학회:학술대회논문집
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• 한국복합재료학회 2000년도 추계학술발표대회 논문집
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• pp.141-146
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• 2000

It has many variables and factors to design the friction materials for automotive brake pads. In this study, the friction and wear characteristics of automotive blake pads have been studied using 1:l full size dynamo meter. Using conventional manners, it takes a great of time and efforts to know that it affects the each raw materials for friction characteristics. For the purpose of examining the effect of each major raw materials, we used the more convenient Taguchi L9 ($3^4$) orthogonal matrix and 1/5 scale dynamo machine for evaluation of the friction characteristics of composite brake pads.

• 대한기계학회논문집A
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• 제26권4호
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• pp.660-666
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• 2002

It has many variables and factors to design the friction materials for automotive brake pads. The purpose of this study is to develop the proper method for design of low-cost and to know friction characteristics of each raw materials. For the purpose of examining the effect of each major raw materials, we used the Taguchi L9(3$^4$)orthogonal matrix and 1/5 scale dynamo machine for evaluation of the friction characteristics of composite brake pads. By adapting the Taguchi method, it is easy to investigate the influence of each component in complicated composites friction materials. After analyzing the testing results by the Taguchi method, the effect of factors and levels influenced friction behavior was studied.

• Korean Chemical Engineering Research
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• 제50권2호
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• pp.264-269
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• 2012

플라스틱 제품의 다이슬라이드식 사출성형은 기존 사출공법의 부가공정을 삭제하여 제품 생산에 요구되는 비용과 시간을 현저히 줄여준다. 그러나 다이슬라이드식 사출성형은 사출제품의 백화, 수지침투, 기공, 수지넘침 등의 결함들을 해결해야한다. 본 연구에서는 사출성형의 공정파라미터들을 유한요소법과 다구치법을 사용하여 최적화하고자 한다. 사출 성형해석은 Moldflow insight 2010 코드로 해석하며 2차 사출에서는 다단 사출코드를 적용한다. 폴리프로필렌(PP)을 밀폐용기인 냉각수 보조탱크로 성형할 때 사용하는 공정파라미터들은 다구치법의 망소특성과 $L_{16}$ 직교배열을 사용한 실험계획을 통해 최적화된다. 한편 최적값은 유의수준 5% 수준의 분산분석을 통해 타당성을 검증한다. 그리고 최적화 조건에서 성형된 제품과 기존 제품의 치수정확도를 비교한 결과 치수안정성이 5% 이상 개선됨을 확인하였다.

• 한국자동차공학회논문집
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• 제19권1호
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• pp.45-50
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• 2011

Hot-Press-Forming (HPF), an advanced sheet metal forming method using stamping at a high temperature of about $900^{\circ}C$ and quenching in an internally cooled die set, is one of the most successful forming process in producing crash-resistant parts such as pillars and bumpers with complex shape, ultrahigh strength, and minimum springback. To optimize conditions of a forming quality in HPF process and secure a safe product without any failures, such as fractures and wrinkling, the simulations based on the coupled thermo-mechanical analysis for a hot-press-formed lower control arm are applied with Taguchi's orthogonal array experiment. Three factor variables - the friction coefficient, blank shape, and hole location for burring - are selected to be optimized. The most effective condition of a forming quality for a hot-press-formed lower control arm is suggested. The simulation results are confirmed with experimental ones.

• 동력기계공학회지
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• 제15권4호
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• pp.11-18
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• 2011

A Shock absorber is one of the most important components in vehicle suspension systems. In general, many repeated analyses are required for the design of a shock absorber to satisfy the suspension characteristics of a specific automobile, like fluid flow analysis and mechanical analysis. The purpose of this study is to develop a fast design tool for shock absorber designers. One of the efficient solutions for this can be an empirical design method considering phenomenological effects from the shock absorber design variables. In order to extract the shock absorber's experimental characteristics, we used Taguchi method. This method showed that which design variables have major effects for the shock absorber's damping characteristics. This empirical design method also showed the direction of the design changes to satisfy the designer's intension.