小样本疲劳寿命分析问题研究进展

PROGRESS IN SMALL SAMPLE EXPERIMENTS FOR FATIGUE LIFE ANALYSIS

受到试验时间和经费的限制,航空结构疲劳试验通常是小样本或极小样本试验.就基于历史数据的小样本疲劳寿命的研究作了系统回顾,给出了小样本的定义,按研究目的将其分为分布形式确定、参数估计和拟合优度检验3类,并作了简单评述.在此基础上对这一领域的研究趋势进行了展望.

Due to the limit of time and expense, small samples are always used in fatigue experiments of aeronautic structures. The recent studies on fatigue life of small sample experiments based on the historical data are reviewed in this paper. The definition of small sample is given and the methods developed in the recent decade are classified and discussed in cluding distribution determination, parameters estimation and goodness-of-fit test according to the purposes of the researches. Some possible and prospective future research directions are discussed.