複合材構造の疲労強度に関する確率的保証方法(<小特集>信頼性工学小特集)

概要

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The objective of this study was to investigate the probabilistic certification method for the fatigue strength of composite structures systematically and then to propose the use of the combination of the scatter factor of life and the scatter factor of fatigue strength. The equations to express the mutual relationship between these two scatter factors and the combination of both factors were derived. Moreover, some calculation examples of the scatter factors were given by using the typical scatter parameters of fatigue life and fatigue strength obtained from the test results of the composite structures provide an appropriate estimate of the central tendency of fatigue life, (2) the distribution form of fatigue life is the log-normal or two-parameter Weibull distribution, (3) the scatter parameters of fatigue life are known and independent of stress, (4) the shape of the S-N curve is linear on semi-logarithmic or double-logarithmic graph paper, and (5) the slope of the S-N curve is known.
社団法人日本材料学会の論文
1987-09-15