公开(公告)号：US06449565B1

公开(公告)日：2002-09-10

申请号：US09286378

申请日：1999-04-05

申请人： Steven E. Budrow ,  Jeffrey R. Davis ,  Kurt A. Plotts

发明人： Steven E. Budrow ,  Jeffrey R. Davis ,  Kurt A. Plotts

IPC分类号： G01L100

CPC分类号： G07C3/00 ,  F05D2220/323

摘要： A method and apparatus for determining the fatigue life of a structure calculate, in real time, the values for the magnitudes of the stress forces imposed at a particular location on the structure, from one or more sensed structural parameters. Also, the associated temperature values of the structure may be calculated or measured. The calculated stress data are continuously examined, in real time, to determine if the direction of their magnitude is increasing or decreasing. If a change in direction is indicated, the previously stored peak data point in the increasing direction is paired with the previously determined peak data point in the decreasing direction to form a cycle pair. The structural fatigue life is then determined, in real time, from this cycle pair.

摘要翻译： 用于确定结构的疲劳寿命的方法和装置实时地计算从一个或多个感测结构参数施加在结构上的特定位置处的应力的大小的值。 此外，可以计算或测量结构的相关温度值。 计算的应力数据被实时连续检查，以确定其幅度的方向是增加还是减小。 如果指示方向改变，则增加方向上先前存储的峰值数据点与先前确定的峰值数据点在减小方向上配对以形成周期对。 然后，实时地从该循环对中确定结构疲劳寿命。