プログラムS-N曲線による疲労寿命の推定方法について

概要

論文の詳細を見る
In this report. a convenient method for the estimation of program fatigue life is proposed. The concepts of basic load program, program S-N curve and equivalent load program are introduced. Under some conditions, it is predictable that (1) in log-log diagram, the program S-N curve is parallel to the conventional S-N curve. (2) program S-N curve can be estimated from one program test, in other words, it can be estimated if one point on a program S-N curve is determined experimentally, (3) according to Miner's low, the fatigue life of one type of specimen under a load program coinsides with the fatigue life of another type of specimen under the equivalent load program, and, therefore, the program S-N curve of one type of specimen can be estimated from only one test of another type of specimen under the equivalent load program. To make sure the appropriateness of these predictions, three types of specimen were tested under some series of load programs and equivalent load programs, and it has been observed that the predictions are valid with in the range of the test.
社団法人日本材料学会の論文
1969-04-15