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2021 Vol.34, Issue 6 Preview Page

Research Paper

Structural Stability Analysis of Medical Waste Sterilization Shredder

의료폐기물 멸균분쇄용 파쇄기의 구조적 안정성 분석

Muhammad Muzammil Azad1
,
Dohoon Kim2
,
Salman Khalid3
,
Heung Soo Kim4*
무하마드 무자밀 아자드1
,
김 도훈2
,
살만 칼리드3
,
김 흥수4*
1Graduate Student, Department of Mechanical Engineering, Dongguk University, Seoul, 04620, Korea
2Undergraduate Student, Department of Mechanical, Robotics and Energy Engineering, Dongguk University, Seoul, 04620, Korea
3Research Professor, Department of Mechanical, Robotics and Energy Engineering, Dongguk University, Seoul, 04620, Korea
4Professor, Department of Mechanical, Robotics and Energy Engineering, Dongguk University, Seoul, 04620, Korea
1동국대학교 기계공학과 박사과정
2동국대학교 기계로봇에너지공학과 학사과정
3동국대학교 기계로봇에너지공학과 연구교수
4동국대학교 기계로봇에너지공학과 교수
*Corresponding Author
31 December 2021. pp. 409-415
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Abstract

Medical waste management is becoming increasingly important, specifically in light of the current COVID-19 pandemic, as hospitals, clinics, quarantine centers, and medical research institutes are generating tons of medical waste every day. Previously, a traditional incineration process was utilized for managing medical waste, but the lack of landfill sites, and accompanying environmental concerns endanger public health. Consequently, an innovative sterilization shredding system was developed to resolve this problem. In this research, we focused on the design and numerical analysis of a shredding system for hazardous and infectious medical waste, to establish its operational performance. The shredding machine's components were modeled in a CAD application, and finite element analysis (FEA) was conducted using ABAQUS software. Static, fatigue, and dynamic loading conditions were used to analyze the structural stability of the cutting blade. The blade geometry proved to be effective based on the cutting force applied to shred medical waste. The dynamic stability of the structure was verified using modal analysis. Furthermore, an S-N curve was generated using a high cycle fatigue study, to predict the expected life of the cutting blade. Resultantly, an appropriate shredder system was devised to link with a sterilization unit, which could be beneficial in reducing the volume of medical waste and disposal time, thereof, thus eliminating environmental issues, and potential health hazards.

Keywords
shredder machine
finite element analysis
static analysis
fatigue analysis
dynamic analysis
medical waste sterilization

COVID-19 대유행으로 인해 병원, 진료소, 검역소 및 의료 연구 기관을 포함한 의료 시설에서 매일 수많은 의료 폐기물이 발생함에 따라 의료폐기물 처리가 심각한 문제가 되고 있다. 이전에는 전통적인 소각방법이 사용되었지만 매립지 부족 및 관련 환경 문제로 인해 공중 보건이 위험에 처해 있다. 이런 문제를 극복하기 위해 멸균분쇄용 파쇄기를 개발하였다. 본 연구에서는 유해 및 감염성 의료폐기물에 대한 작동 성능을 결정하기 위해 분쇄용 파쇄 시스템의 설계 및 수치해석을 수행하였다. 파쇄기의 부품은 CAD 소프트웨어를 이용하여 모델링하였으며, ABAQUS를 사용하여 유한요소해석을 수행하였다. 정적, 동적 및 피로하중 조건 하에서 파쇄기 절단 날의 해석을 수행하였으며, 의료 폐기물을 분쇄하는데 필요한 절단력을 기반으로 절단 날의 형상이 효과적임을 입증하였다. 모달 해석을 통해 구조물의 동적 안정성을 검증하였다. 또한, 절단 날의 수명을 예측하기 위해 고주기 피로해석을 통해 S-N 선도를 생성하였다. 이를 통해 적절한 분쇄용 파쇄 시스템이 멸균 장치와 통합되도록 설계하여 의료 폐기물의 양과 처리 시간을 줄임으로써 환경 문제와 잠재적인 건강 위험을 극복하는 방안을 제시하였다.

키워드
분쇄기
유한요소해석
정적해석
피로해석
동적해석
의료폐기물
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Information
  • Publisher :Computational Structural Engineering Institute of Korea
  • Publisher(Ko) :한국전산구조공학회
  • Journal Title :Journal of the Computational Structural Engineering Institute of Korea
  • Journal Title(Ko) :한국전산구조공학회 논문집
  • Volume : 34
  • No :6
  • Pages :409-415
  • Received Date : 2021-10-29
  • Revised Date : 2021-11-04
  • Accepted Date : 2021-11-05
  • DOI :https://doi.org/10.7734/COSEIK.2021.34.6.409
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