• Title/Summary/Keyword: YOON's test

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Development of finite element analysis program for aluminum alloy sheets (알루미늄 합금 판재 성형성 예측을 위한 유한요소해석 프로그램 개발)

  • Kim S. T.;Moon M. S.;Chung W. J.;Yoon J. W.;Kim Y. G.
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • 2005.10a
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    • pp.291-294
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    • 2005

  • Recently, the usage of aluminum alloy is rapidly increasing in automobile industry to achieve weight reduction for fuel efficiency. However, design of forming process of aluminum is more difficult than steel because of poor formability and severe springback. Since applications of finite element analysis for the design of sheet metal forming process are actively performed, it is required to conduct proper consideration of aluminum material behavior. In this study, a plane stress yield function Yld2000(Yoon et al., 2000), proven to describe well the anisotropic behavior of aluminum alloy, is implemented for FE analysis. One element test is considered to verify the validity of implementation of Yld2000 model. In addition, cylindrical cup drawing test is performed to verify earing shape of a drawn cup.

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A Comparision on Structure Analysis and Load Test of Driving Bogie for Electrical Multiple Unit (전동차 구동대차의 구조해석 및 하중시험 비교 고찰)

  • Kim W.K.;Yoon S.C;Kwon S.T.;Park O.J.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.06a
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    • pp.404-409
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    • 2005

  • This paper describes the result of structure analysis and load test for bogie frame. The purpose of the analysis and test is to evaluate an safety which body structure shall be considered fully sufficient rigidity so as to satisfy proper system function under maximum load. Bogie system consists of bogie frame, suspensions, wheel-sets, braking system and transmission system. Among these component, the bogie frame is most significant component subjected to the vehicle and passenger loads. The evaluation method is used the JIS E 4207 specification throughout the FEM analysis and static load test. The analysis and test results have been very safety and stable for design load conditions.

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Structural Strength Evaluation of a Carbody by Finite Element Analysis and Tests (구조해석 및 시험에 의한 경량화 차체 구조강도 평가)

  • Yoon S.C.;Kim W.K.;Jun C.S.;Kim M.Y.
    • Proceedings of the Korean Society of Precision Engineering Conference
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    • 2005.10a
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    • pp.49-54
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    • 2005

  • This paper describes the result of structure analysis and load test of body structure. The purpose of the analysis and test is to evaluate an safety which body structure shall be considered fully sufficient rigidity so as to satisfy proper system function under maximum load and operating condition. Material of body structure applied an aluminum alloy. Body structure consist of side frame, under frame, roof frame, end frame. Both FEM analysis and load test are based on 'Performance Test Standard for Electrical Multiple Unit, noticed by Ministry of Construction & Transportation, in 2000' and reference code is JIS E 7105. The test results have been very safety and stable fer design load conditions.

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Reference research for application of electrodiagnostic test in facial nerve paralysis (구안괘사(口眼喎斜)에 있어서 전기진단검사법(電氣診斷檢査法)의 유용성(有用性)에 대(對)한 문헌고찰(文獻考察))

  • Yoon, Jong Tae;Kim, Han Sung
    • Journal of Haehwa Medicine
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    • v.9 no.1
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    • pp.259-266
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    • 2000

  • Facial nerve is subject to injury at any point in the course from the cerebral cortex to the motor end plate in the face, so many etiologic varieties of facial paralysis may be encountered, including trauma, viral infection and idiopathic. Author have reviewed the effect of electrodiagnostic test in Bell,s palsy. The electrodiagnostic test is helpful for estimating the prognosis of the Bell's palsy patient.

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Quality of Life in Patients with Multiple Myeloma (다발성 골수종 환자의 삶의 질)

  • Jo, Kwan-Suk;Ban, Ja-Young;Yoon, Jee-Yeon;Kook, Seung-Hye;Yoon, Hyun-Sun;Yoo, Yang-Sook
    • Korean Journal of Adult Nursing
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    • v.28 no.3
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    • pp.314-322
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    • 2016

  • Purpose: The purpose of this study was to identify the quality of life reported by patients with multiple myeloma and secondly to identify the factors that impact the quality of life (QoL). Methods: 189 patients with multiple myeloma completed survey questionnaires. Quality of life was evaluated using European Organization for Research and Treatment of Cancer Quality of Life Questionnaire-Core (EORTC QLQ-C) 30 and Multiple Myeloma (MY) 20. The data were analyzed using the t-test, ANOVA, Kruskal-Wallis test, Duncan test and the Mann-Whitney test. Results: The mean score for each subscale of EORTC QLQ-C30 was 53.35 for global health status, 73.37 for functional scale, and 31.29 for symptom scale. The mean score for each subscale of EORTC QLQ-MY20 was 60.49 for future perspective, 59.78 for body image, 20.25 for disease symptom and 24.99 for side effect of treatment. Quality of life was reported to be significantly lower among females, unemployed, dependence on a sibling for financial support for treatment, a diagnosis of anemia, having treatment, high score on Eastern Coorperative Oncology Group and high grade peripheral neuropathy. Conclusion: The results of the survey can identify characteristics impacting the QoL of patients with multiple myeloma. Developing appropriate educational strategies and nursing interventions would enhance their QoL.

  • https://doi.org/10.7475/kjan.2016.28.3.314 인용 PDF KSCI