• Title/Summary/Keyword: wpc

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세계석유산업의 현황과 과제

  • Korea Petroleum Association
    • Korea Petroleum Association Journal
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    • no.9 s.220
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    • pp.105-106
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    • 2000
  • 본고는 세계석유산업이 당면한 문제점을 몇 개의 주제로 나누어 제 16차 WPC 정기총회 패널강연회에서 발표ㆍ논의된 내용을 요약한 것이다.

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Quantitative Analysis of Wear Debris for Surface Modification Layer by Ferrography (Ferrography에 의한 표면개질층의 마모분 정량분석)

  • 오성모;이봉구
    • Tribology and Lubricants
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    • v.15 no.3
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    • pp.265-271
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    • 1999
  • Wherever there are rotating equipment and contact between surface, there is wear and the generation of wear particles. The particles contained in the lubricating oil carry detailed and important information about the condition monitoring of the machine. This information may be deduced from particle shape, composition, size distribution, and concentration. Therefore, This paper was undertaken to Ferrography system of wear debris generated from lubricated moving machine surface. The lubricating wear test was performed under different experimental conditions using the Falex wear test of Pin and V-Block type by Ti(C, N) coated. It was shown from the test results that wear particle concentration (WPC) and wear severity Index( $I_{S}$), size distribution in normal and abnormal wear have come out all the higher value by increases sliding friction time. Wear shape is observed on the Ferrogram it was discovered a thin leaf wear debris as well as ball and plate type wear particles. This kind of large wear shape have an important effect not only metals damage, but also seizure phenomenon.

Ferrography에 의한 마멸분 정량분석

  • O, Seong-Mo;Lee, Bong-Gu
    • Transactions of the Korean Society of Mechanical Engineers A
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    • v.24 no.10 s.181
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    • pp.2420-2427
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    • 2000
  • In contacting between surface, there is wear and the generation of wear particles. The particles contained in the lubricating oil carry detailed and important information about the condition monitoring of the machine. Therefore, This paper was undertaken for Ferrography system of wear debris generated from lubricated moving machine surface. The lubricating wear test was performed under different experimental conditions using the Falex wear test of Pin and V-Block type by Ti(C,N) coated. It was shown from the test results that wear particle concentration(WPC) ; wear severity Index(IS) and size\distribution have come out all the higher value by increases sliding friction time. By the Ferrogram a thin leaf wear debris as well as ball and plate type wear particles was observed.

Outlook for Wood Plastic Composite in aspect of Market and Technology (신 목질 복합재료인 합성목재의 전망 - 시장과 기술의 측면에서 -)

  • Han, You-Soo
    • Composites Research
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    • v.19 no.6
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    • pp.38-42
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    • 2006
  • Wood Plastic Composite(WPC) has been introduced as a new constructional material in Europe and North America. The maintenance-free durability against weather was accepted by customers and the environment-friendly merits ignited the abrupt increase of market size. Domestic major companies have kicked off the WPC business at the market of outdoor constructional materials. Due to the high contents of natural wood fiber, the production equipments should be modified to remove the moisture, to prevent thermal degradation and to promote output rates. Materials including functional fillers play a critical role in rheological properties, which affects the physical and mechanical properties of the last products. More research might be performed for synergy effects combined by various academic fields from mechanical and chemical engineering to polymer process and material science.

세계에너지 공급전망

  • Korea Petroleum Association
    • Korea Petroleum Association Journal
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    • no.12 s.34
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    • pp.35-39
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    • 1983
  • 이 자료는 지난 8월 28일부터 9월 2일까지 영국 런던에서 열렸던 제11차 세계석유회의 (WPC)에서 발표된 세계동력회의(WEC)국제집행이사회 의장인 Sven O.Hultin박사의 보고서를 요약, 정리한 것이다. <편집자 주>

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