摘要
采用加权非线性回归方法对车轴钢疲劳裂纹扩展速率数据进行处理，并对近门槛区的数据赋予较大的权值，所得结果与试验点吻合较好，可为估算车轴的实际疲劳裂纹扩展寿命提供良好的试验依据。
In this paper,the weighting non-linear regression methold is used to deal with the test data of fatigue crack propagation rate in the axle steel.For the data near threshold zone,the weight is taken to be fifteen times or more. The result is reasonable compared to the test data,and able to estimate the fatigue life for axle.
出处
《铁道学报》
EI
CSCD
北大核心
1995年第2期79-82,共4页
Journal of the China Railway Society
基金
铁道部科技基金
关键词
疲劳裂纹扩展
车轴钢
机车
fatigue crack propagation
axle steel
weighting non-linear regression
