• Title/Summary/Keyword: taguchi method

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Investigation of Manufacturing Parameters for Non-fibrous Ceramic Brake Pads using Taguchi Method (다꾸치법에 의한 무섬유 세라믹 브레이크 마찰재의 제조변수에 대한 고찰)

  • Yeo Jeong-Gu;Choi Sung-Churl
    • Korean Journal of Materials Research
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    • v.14 no.1
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    • pp.59-66
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    • 2004
  • In the present study, ceramic brake pads without fiber phases were manufactured by the low temperature heat treatment below$ 700 ^{\circ}C$. The manufacturing parameters of ceramic brake pads and those levels were investigated by the analysis results of signal-to-noise ratios, ANOVA based upon the Taguchi method. The ceramic brake pads prepared in the Mg experiment had a friction coefficient of 0.30~0.55 very close to the target coefficient (0.35~0.45) of commercial brake pads utilized in the automobiles. The frictional properties of ceramic brake pads could be stabilized with the adjustment of amounts of lubricating additives. The optimum preparation conditions as well as batch formulations for the fabrication of non-fibrous ceramic brake pads were finally determined using Taguchi method in this study.

A Study on the Improving Diaphgram for Micro Speaker Performance using Taguchi Method (다구찌법을 이용한 마이크로 스피커용 다이아프램의 성능개선에 관한 연구)

  • Hong, D.K.;Woo, B.C.;Ahn, C.H.
    • Proceedings of the KSME Conference
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    • 2004.11a
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    • pp.534-538
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    • 2004
  • On this study, we improved diaphgram for micro speaker performance using Taguchi method in discrete design space. The design of diaphgram has an effect on performance of micro speaker such as, thickness of diaphgram, shape of diaphgram, etc. Therefore this study carried to decide shape of diaphgram and thickness of diaphgram for minimizing 2nd natural frequency of diaphgram using Taguchi method. we showed improved design factors that minimized 2nd natural frequency of diaphgram. Also, 2nd natural frequency of diaphgram for micro speaker is reduced up to 37 percent maintaining twist mode shape. From the results of ANOVA, 2nd natural frequency of diaphgram for micro speaker have an effect on position of the outer curved shape and thickness of diaphgram.

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Analysis of a Vehicle Performance Using Taguchi Method: How does a Torque Converter Affect the Vehicle Performance\ulcorner (다구찌 방법을 이용한 토크 컨버터의 차량 연비 및 가속성능에 미치는 영향 분석)

  • Lee, Chin-Woo;Lim, Won-Sik;Park, Yeong-Il;Lee, Jang-Moo
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.26 no.6
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    • pp.1085-1091
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    • 2002
  • General vehicle is evaluated by its acceleration, fuel economy, NVH (Noise, Vibration and Harshness) and subjective (such as launching feel) performance. The first step to enhance its performance is to know how much each component affects on the vehicle performance. It is very important to know what is the key factor of the component among many specifications. Hydraulic torque converter can be expressed by means of its performance curve (torque ratio and capacity factor). In this paper, the key factor of torque converter, which affect vehicle performance, are explored by using Taguchi method. Moreover, general sensitivity analysis method is compared with Taguchi's experiment.

A study on design optimization of a multistage bollard by Taguchi method (다구찌 방법을 통한 다단식 상하이동형 볼라드의 설계 최적화 연구)

  • Byun, Hong-Seok
    • Journal of Power System Engineering
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    • v.19 no.5
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    • pp.25-31
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    • 2015
  • This study deals with optimal conditions for design parameters of the multistage bollard with up and down installed on the street to protect pedestrians or stop cars. FE simulation and Taguchi method are used to achieve the optimization for the automatic multistage bollard to minimize effective stress caused by the external force. Thickness, height of stage 2, diameter and over-all height which affect its structural strength are chosen as design parameters. According to the experiments combined by orthogonal array, each of the effective stresses is evaluated. And the results are analyzed by using the signal to noise ratio concept of Taguchi method. From their results, the optimal combination of design parameters are proposed.

Optimization of Process Parameters for Mill Scale Recycling Using Taguchi Method (다구찌 방법을 이용한 밀스케일 재활용에 대한 공정변수의 최적화)

  • Baek, Seok-Heum;Joo, Won-Sik;Kim, Chang-Kee;Jeong, Yu-Yeob;Shin, Shang-Woon;Hong, Soon-Hyeok
    • Journal of the Korean Society for Precision Engineering
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    • v.25 no.2
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    • pp.88-95
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    • 2008
  • With society focusing more and more on environmental issues, the recycling of materials of all types has become an important concern. In this paper, optimization method is developed for reducing cost and improving quality in mill scale recycling. An experimental investigation into the process parameter effects is presented to determine the optimum configuration of parameters for performance, quality and cost. Taguchi's optimization approach was used to obtain the optimal parameters. The significant parameters were identified and their effects on mill scale recycling were studied. As a results, a confirmation experiment with the optimal levels of process parameters was carried out in order to demonstrate the effectiveness of the Taguchi method.

Study of Muffler for Rotary Compressor by Taguchi Method Viewpoint (회전형 압축기용 머플러의 연구 (1) : 다꾸찌 기법 관점에서)

  • 박성근
    • Proceedings of the Korean Society for Noise and Vibration Engineering Conference
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    • 1998.04a
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    • pp.542-547
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    • 1998
  • As the concern for a global energy conservation and environmental protection are increasing, it has been more important thing to correspond with CFC depletion. Alternate refrigerants have merit such as lower global warming effect, but also have demerits such as lower efficiency, miscibility, increasing noise and poor reliability problems. Then we have to develop more efficient, silent and robust compressors to satisfying world-wide demand. In this paper, parametric study on rotary compressor muffler for a room air-conditioner was carried out to investigate the effect of important design variables on noise by using Taguchi robust design method with signal-to-noise(S/N) ratio. Taguchi method seems to be helpful for finding optimum value of design variables for noise level. We also applied neural network to find optimal value of design variables.

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Determining the Level of A Noise Factor in Parameter Design for Smaller-the-better Characteristics (망소특성의 파라메타설계에서 잡음인자의 수준결정)

  • Yun, Won Young;Seo, Sun-Keun
    • Journal of Korean Institute of Industrial Engineers
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    • v.39 no.5
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    • pp.367-373
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    • 2013
  • In this article, we deal with a design problem for determining the levels of noise factors in the Taguchi method. First, the proposed levels by Taguchi method is reviewed in case of smaller-the-better performance characteristics. We obtain the optimal levels of noise factors minimizing the mean square error of SN(signal to Noise) ratio and compare the optimal levels with the levels proposed by Taguchi method under the first and second order models. Secondly, the concept of V-optimality is applied to determining the levels of noise factors.

Vibration analysis of honeycomb sandwich composites filled with polyurethane foam by Taguchi Method

  • Aydin, Muhammet R.;Gundogdu, Omer
    • Steel and Composite Structures
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    • v.28 no.4
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    • pp.461-470
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    • 2018
  • In this study, the effect of polyurethane foam filler, in addition to surface layer thickness and core material thickness, on vibration characteristics of sandwich structures was investigated. The manufacturing process was carried out according to the Taguchi method. The natural frequencies and damping ratios of the produced samples were determined experimentally for fixed-free boundary conditions. In addition, solid models were developed for test samples and their finite element analyses were performed with $ANSYS^{(R)}$ to obtain their natural frequencies and mode shapes. An acceptably good agreement was found with the comparison of experimental results with the numerically obtained ones. The most effective parameters on the vibration characteristics of the sandwich structure were determined by the Taguchi method.

A Study on Optimization of Neuro-fuzzy System Parameter using Taguchi Method (다구찌 방법을 이용한 뉴로퍼지 시스템 파라미터의 최적화)

  • 김수영;신성철;고창두
    • Journal of the Society of Naval Architects of Korea
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    • v.40 no.1
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    • pp.69-73
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    • 2003
  • Neuro-Fuzzy System is to combine merits of fuzzy inference system and neural networks. The neuro-fuzzy system applies a information about given input-output data to fuzzy theories and deals these fuzzy values with neural networks, e.g. first, redefines normalized input-output data as membership functions and then executes thses fuzzy information with backpropagation neural networks. This paper describes an innovative application of the Taguchi method for the determination of these parameters to meet the training speed and accuracy requirements. Results drawn from this research show that the Taguchi method provides an effective means to enhance the performance of the neuro-fuzzy system in terms of the speed for learning and the accuracy for recall.

Optimization of Die Design for Tube Cold Extrusion using Taguchi Method (다구치 방법을 이용한 튜브 냉간 압출 금형의 최적화)

  • Lim, S.S.;Lim, S.J.;Choi, H.J.;Cho, C.D.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • 2006.05a
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    • pp.153-158
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    • 2006
  • Nowadays, hollow upper-shaft of monobloc type has been considered for weight reduction and high quality in the automobile industry. To form the upper-shaft under tube cold extrusion, Taguchi method is applied to optimize the die design in this study. Taguchi method for optimum die design is to establish the optimal combination of design parameters and to reduce a number of experiments. Effect of parameters including the die relief, mandrel, die half angle is investigated and analyzed based on FEA analysis using a FEM commercial software MSC_Marc. Furthermore extrusion experiments have been performed to verify the results investigated in the FEM simulations.

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