10.1299/jsmeibaraki.2017.25.805
https://www.jstage.jst.go.jp/article/jsmeibaraki/2017.25/0/2017.25_805/_pdf
130006402643
射出成形 CF/PA の疲労強度のバラツキと変動疲労寿命予測
Statistical Distribution of Fatigue Life of Injection Molded Short Carbon Fiber Reinforced Polyamide Composites
ja
abstract
The statistics distribution of fatigue life of a short carbon fiber-reinforced polyamide-6 composite and its stress ratio dependence are examined. A procedure for predicting S-N relationships for different constant values of probability of failure <i>P</i>, i.e. P-S-N curves, is proposed. Fatigue tests are performed at different stress ratios <i>R</i> = 0.1, 10 and <i>R</i> = χ = σ<sub>UTS</sub>/σ<sub>UCS</sub>, respectively. To identify the statistical nature of fatigue life, lognormal and Weibull distributions are fitted to the fatigue data obtained. The plot of fatigue data on a probability paper and the goodness-of-fit tests using the modified Kolmogorov–Smirnov suggest that both lognormal and Weibull distributions are acceptable as the distributions for the static strength data as well as fatigue life data. The P-S-N curves at different stress ratios for different probabilities of failure (10%, 50% and 90%) are constructed not only using the experimental data but also a theory developed in this study, and they are compared to each other to evaluate the accuracy of the theory.
disallow
9000382675038
黒﨑 裕太
KUROSAKI Yuuta
University of Tsukuba
筑波大学
9000382675039
河井 昌道
KAWAI Masamichi
University of Tsukuba
筑波大学
24242683
茨城講演会講演論文集
The Proceedings of Ibaraki District Conference
The Japan Society of Mechanical Engineers
一般社団法人 日本機械学会
2017
2017.25
0
805
false
2017年第25回茨城講演会
oai:japanlinkcenter.org:2003738366
10.1299/jsmeibaraki.2017.25.805
130006402643