The Weibull statistics modified by Bayesian statistics and 4th strength law was adapted to analyze the strength distribution of plastic materials, and then validated by yield strength of Q235 steel.

• 为将Weibull统计应用于塑性材料的强度分布规律分析,利用贝叶斯统计方法和第四强度理论对Weibull统计理论进行修正,并用Q235钢的屈服强度进行验证。