西南石油大学学报(自然科学版) ›› 1994, Vol. 16 ›› Issue (1): 60-67.DOI: 10.3863/j.issn.1000-2634.1994.01.010

• 石油机械工程 • Previous Articles     Next Articles

Optimun Relation Curve of A and N in dA/dN Calculation

Zhang Xiaoyu Song Yu   

  1. Department of Mechanical Engineering
  • Received:1900-01-01 Revised:1900-01-01 Online:1994-02-20 Published:1994-02-20

Abstract: Using orthogonal polynomial regression method analyze the possible relation cuves of A and N,and compare the results with different regression powers in dA/dN calculation,this paper determines the optimun relation curve of A and N.

Key words: Fatigue crack, Estimation of fatigue life, Curve fitting

CLC Number: