The boundary element alternating method is applied to two dimensional and axisymmetric racture mechanics problems. Different crack depths are considered with particular emphasis on cracks. Several methods of calculating the stress intensity factor are presented and applied to several practical examples to demonstrate their accuracy.

Abstract
 1. 서론
 2. 응력확대계수
  2.1 변위외삽법(Displacement extrapolation)
  2.2 응력외삽법(Stress extrapolation)
  2.3 변위기울기법(Displacement slope)
  2.4 응력기울기법(Stress slope)
 3. 경계요소 순차근사해석
 4. 수치해석 및 고찰
  4.1 균열이 있는 판재
  4.2 균열이 있는 보
  4.3 원주균열이 있는 둥근 바
  4.4 균열이 있는 실린더
 5. 결론
 참고문헌

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