提出了全范围裂纹扩展公式,并通过2种材料的裂纹扩展实验,由非线性拟合方法得到了较高精度的拟合结果,从而验证了公式的正确普适性、参数易求性及公式物理意义的明确性,进而可应用到预测不同材料的疲劳裂纹扩展速率.
Make a 3-parameter full range crack growth expressions,from the results of experiments of two materials.It is evident that the 3-parameter formula can effectively,adequately and logically depict the physical characteristics and the phenomenological quantitative laws of the full range of crack growth rate,thus we can predict FCP for various material.