• Title/Summary/Keyword: experiment method

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Determination of Optimal Process Condition for the Precision Blanking of Lend Frame (리드프레임 타발 공정의 최적 전단 조건의 선정)

  • Suh E. K.;Lim S. H.;Shim H. B.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • 2001.10a
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    • pp.71-74
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    • 2001
  • Using the Taguchi method, optimum process condition of lead frame blanking has been determined in the point of view of shape of blanked profile. As the main process parameters, clearance, strip holding pressure and bridge width are selected. According to the orthogonal array table, three levels of experiment have been carried out for each factors. The optimal blanking condition is analyzed with the SN ratio. It has been verified that the optimal process condition can be determined with a combination of basic blanking experiment and experiment design method. Both the effect of each factors and gain can be judged in the quantitative manners from the analysis of SN ratio.

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A Study on the Characteristics of the Precision Blanking of Lead Frame (II): Determination of Optimal Process Condition (리드 프레임 타발공정의 전단특성에 관한 연구(II) - 최적 전단 조건의 선정)

  • 서의권;임상헌;심현보
    • Transactions of Materials Processing
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    • v.11 no.2
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    • pp.132-137
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    • 2002
  • Using the Taguchi method, optimum process condition of lead frame blanking has been determined in the point of view of shape of blanked profile. As the main process parameters, clearance, strip holding pressure and bridge width are selected. According to the orthogonal array table, three levels of experiment have been carried out for each factor. The optimal blanking condition is analyzed with the SN ratio. It has been verified that the optimal Process condition can be determined with a combination of basic blanking experiment and experiment design method. Both the effect of each factor and gain can be judged in the quantitative manner from the analysis of SN ratio.

Type-II stepwise progressive censoring

  • Bayat, Mohammad;Torabi, Hamzeh
    • Communications for Statistical Applications and Methods
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    • v.23 no.1
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    • pp.57-70
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    • 2016
  • Type-II progressive censoring is one of the censoring methods frequently used in clinical studies, reliability trials, quality control of products and industrial experiments. Sometimes in Type-II progressive censoring experiments, the failure rate is low so the waiting time to observe the $m^{th}$ failure will be very long; however, the experimenter may have to terminate the experiment before a predetermined time. In this article, if two generalized types of Type-II progressive censoring are reminded, we then make some changes in the removal method of Type-II progressive censoring such that without reducing the deduction quality, the termination time of the experiment decreases. This can be done with decreasing withdraws throughout the steps of the experiment with a special reasonable method. A simulation study is done and the results are tabulated at the end of this article for a comparison between introduced method and Type-II progressive censoring.

Quality Changes in Eleutherococcus senticosus Cortex Processed by Different Pretreatment and Drying Method (전처리 및 건조방법에 따른 가시오갈피생약재의 품질변화)

  • Jeong, Haet-Nim;Lim, Sang-Hyun;Kim, Hee-Yeon;Kim, Kyung-Dae;Park, Yu-Hwa;Ham, Hun-Ju;Lee, Kwang-Jae;Kim, Kyung-Hee;Ahn, Young-Sup
    • Korean Journal of Medicinal Crop Science
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    • v.18 no.2
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    • pp.98-104
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    • 2010
  • Eleuthero(Eleutherococcus senticosus Maxim.) cortex is well known as a herb medicine for tonic. This study was performed to improve the quality of dried E. senticosus cortex. Investigation of quality factor and contents of efficient compounds under different steaming times and drying methods were performed to determine the proper processing and drying conditions of Eleuthero cortex harvested on March in annual stems. The proper steaming time for peeling bark to make high quality Eleuthero cortex took less than 20 mins. Eleutheroside B and E contents among drying methods were significantly different at 5% level DMRT. The $50^{\circ}C$ heat drying was the most advisable condition for drying, when drying and keeping contents of effective compounds.

Computational integral imaging reconstruction method using round-type mapping model (원형 매핑 모델을 사용하는 컴퓨터 직접 영상 재생 방식)

  • Sin, Dong-Hak;Kim, Nam-Woo;Lee, Jun-Jae;Lee, Byeong-Guk
    • Proceedings of the Optical Society of Korea Conference
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    • 2007.07a
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    • pp.259-260
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    • 2007
  • In this paper, we propose a novel computational integral imaging reconstruction (CIIR) method using round-type mapping model. Proposed CIIP method can overcome problems of non-uniformly reconstructed images caused from the conventional method and improve the resoulution of 3-D images. To show the usefulness of the proposed method, both computational experiment and optical experiment are carried out and their results are presented.

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