The vertical impact crusher is the machine which could produce artifical sand similar to natural aggregates in the site of guarry and pits. FEM was used to analyse the stress and strength of the machine at high rotational speed. The test specimen was made from the same material as the shaft and tension tests were conducted. The Shaft under extreme conditions was analysed to determine maximum stress level and its location from the results. The maximum level of stress and its location could be predicted.

Abstract
 1. 서론
 2. 실험 및 유한요소 해석
  2.1 내장된 차체 테스트
  2.2 내장된 차체 테스트
  2.3 경계조건 및 하중 조건
 3. 결과 및 고찰
 4. 결론
 5. 후기
 6. 참고문헌

• 유정열
• 박명균
• 박세만