한국산학기술학회논문지 (Journal of the Korea Academia-Industrial cooperation Society)

  • 제22권1호
  • /
  • Pages.305-312
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  • 2021
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  • 1975-4701(pISSN)
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  • 2288-4688(eISSN)
한국산학기술학회 (The Korea Academia-Industrial cooperation Society)
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미세조직 분석을 통한 잠수함 탈출트렁크 해치 스프링 파손에 관한 연구

A Study on the Breakage of the Hatch Spring of the Submarine Escape Trunk through Microstructure Analysis

  • 투고 : 2020.08.11
  • 심사 : 2021.01.08
  • 발행 : 2021.01.31
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초록

본 연구는 미세조직 분석을 통한 잠수함 탈출 트렁크 해치 스프링 파손부 개선에 관한 내용으로 잠수함 건조 중 발생한 탈출 트렁크 파손에 대한 발생원인 및 개선방안에 대해서 검토 하였다. 탈출 트렁크 스프링 파괴에 대한 원인 규명을 위해서 파손된 제품에서 시편을 채취하여 형광분석기를 이용한 재질의 화학성분을 비교 분석 하였고, 기계적 특성 변화를 검토하기 위해 파손부 주위로 비커스 경도를 측정 하였다. 특히, 스프링 파손부는 광학현미경 및 주사전자현미경을 이용하여 파면을 심층적으로 관찰하여 균열의 시작점 및 전파 경로를 확인하여 파괴에 대한 원인을 규명하고자 하였다. 최종적으로는 스프링 파손 원인 규명을 통한 스프링 형상 설계 방안을 제시하였고, 추가적으로 내부식성 및 내마모성이 우수한 나일론 도장을 도포하여 신규로 개선된 스프링을 제작 하였다. 실제 건조중인 잠수함 트렁크 해치에 부착하여 시험한 결과 기존 제품에 비해 해치 여닫음 시 스프링 간 접촉에 의한 도장 벗겨짐 현상이 감소하여 개선의 효과를 확인 하였다.

This study examines the damage to the submarine's escape trunk hatch spring through microstructure analysis. The cause of the escape trunk's damage during the submarine's construction and its improvement measures were reviewed. To determine the cause of breakage of the escape trunk spring, samples were taken from the damaged product and analyzed for chemical composition, hardness, and microstructure. In particular, the breakage part of the spring was analyzed in-depth by using a scanning electron microscope to determine the cause of corrosion destruction. Finally, a spring shape design method was proposed through the investigation of the cause of spring breakage. In addition, a newly improved spring was produced by applying a nylon coating with excellent corrosion resistance and abrasion resistance. Applying to an actual submarine trunk hatch revealed that the coating peeling phenomenon due to the contact between the springs is significantly improved when the hatch is opened or closed compared to the existing products.

키워드

참고문헌

  1. K. S. Moon, Strategic Utilization of Submarines and countermeasures Against North Korea Threats, Ph.D dissertation, Kyonggi University, Kyonggi, Korea, pp.1-5, 2019.
  2. Naval & Special Ship Design Team, Diving Sys. Design Report, Design Review Report, Daewoo Shipbuilding & Marine Engineering Co.,LTD, Korea, 2009 (in Korea), pp.18.
  3. R. B. Na, J. H. Seo and B. H. Kim, "A study for increasing the safety of gun firing system of patrol killer guided missile from failure mode analysis", Journal of the KIMST, Vol.20, No.2, pp.159-169, 2017. DOI: https://dx.doi.org/10.9766/KIMST.2017.20.2.159
  4. H. S. Chang, K. W. Lee, Y. H. Choi, D. S. Seo, "Reliability analysis and its application based on quality information of submarine installed equipment during building stage", Journal of the Korean Society of Marine Engineering, Vol.41, No.9 pp.934-942, 2017. DOI: https://dx.doi.org/10.5916/jkosme.2017.41.9.934
  5. S. C. Shin, J. W. Park, J. C. Lee, "An SE-Based System Architecture Process for Submarine's Basic Desig", Journal of the Korea Academia-Industrial cooperation Society, Vol.20, No.3 pp.91-99, 2019. DOI: https://doi.org/10.5762/KAIS.2019.20.3.91
  6. S. U. Jung, H. G. Shim, M. J. Choi, "Measures for Improvement of RAM Target Value Setting Methods for Submarine Weapon Systems", Journal of the Korea Academia-Industrial cooperation Society, Vol.21, No.4 pp.419-427, 2020. DOI: https://doi.org/10.5762/KAIS.2020.21.4.419
  7. K. B. Lee and J. H. Kim, "Design of leaf spring with high fatigue life applied to horizontal linear vibrating actuator", Journal of the Korea Academia-Industrial cooperation Society, Vol.13, No.12 pp.5684-5688, 2012. DOI: http://dx.doi.org/10.5762/KAIS.2012.13.12.5684
  8. D. J. Lee, G. G. Kim and S. B. Shin, "Behavior of Global Bending Distortion of Hatch-cover in Container Carrier during Fabrication Process", Journal of the Korean Welding and Joining Society, Vol.28, No.4 pp.41-48, 2010. DOI: http://dx.doi.org/10.5781/KWJS.2010.28.4.041
  9. S. B. Shin, D. J. Lee and J. S. Lee, "A Study on the Predicting Transverse Residual Stress at the Ultra Thick FCA Butt Weldment of Hatch Coaming in a Large Container Vessel", Journal of the Korean Welding and Joining Society, Vol.28, No.4 pp.33-40, 2010. DOI: http://dx.doi.org/10.5781/KWJS.2010.28.4.033
  10. Y. C. Byun and E. S. Kang, "Study on the Disturbance Applied to Launcher Hatch by Ship Motions", Journal of Institute of control, robotics and systems, Vol.19, No.12 pp.1111-1118, 2013. DOI: http://dx.doi.org/10.5302/J.ICROS.2013.13.1907
  11. S. H. Oh and B. L. Choi, "Prediction of Spring Rate and Initial Failure Load due to Material Properties of Composite Leaf Spring", Transactions of the Korean Society of Mechanical Engineers, Vol.38, No.12 pp.1345-1350, 2014. DOI: http://dx.doi.org/10.3795/KSME-A.2014.38.12.1345
  12. N. G. Jeong, "A study on the behavior of the piston with orifice hole in the cylinder of a gas spring", Journal of the Korea Academia-Industrial cooperation Society, Vol.20, No.12, pp.125-130, 2019. DOI: https://doi.org/10.5762/KAIS.2019.20.12.125
  13. B. H. Kim, Microstructure and Their Properties of Heat Resistant Mg Alloys by Squeeze Casting, Ph.D dissertation, Pusan National University, Busan, Korea, pp 50-54, 2012.