초록 ▼

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 structur

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.

대표청구항 ▼

1. A method for determining, in real time, the fatigue life of at least a portion of a structure, comprising the steps of:determining the stress forces imposed on at least a portion of the structure; determining, from the determined stress forces, a cycle pair comprising a pair of high and low peak

1. A method for determining, in real time, the fatigue life of at least a portion of a structure, comprising the steps of:determining the stress forces imposed on at least a portion of the structure; determining, from the determined stress forces, a cycle pair comprising a pair of high and low peak magnitude values of the determined stress forces; and determining the fatigue life of at least a portion of the structure from the determined cycle pair.