The notched Charpy and Izod impact tests are the most prevalent techniques used to characterize the effects of high impulse loads on ploymeric materials. An analysis method for rubber toughened PVC is suggested to evaluate critical strain energy release rates(Gc) from the Charpy impact energy measurements. An Instrumented Charpy Impact tester was used to extract ancillary information concerning fracture properties in addition to total fracture properties and maximum critical loads. The stress intensity factor Kd was computed for varying amounts of rubber contents from the obtained maximum critical loads and also toughening effects were investigated as well.

Abstract
 1. 서론
  1.1 연구의 배경 및 내용
 2. 기본이론
  2.1 파단에너지로부터 에너지 해방율 (Gc ) 계산
  2.2 동적파괴인성치(Kld) 의 계산
 3. 실험방법 및 절차
  3.1 실험장치
  3.2 실험방법
 4. 실험결과 및 고찰
 5. 결론
 참고문헌

• 최영식
• 박명균