综述了多轴蠕变的试验方法,并推荐了基于试验数据评价工程结构蠕变寿命的参考应力法.介绍了目前常用的薄壁管试验、环向缺口圆棒试验、环向缺口薄壁管试验、构件模拟试验、穿孔二向板试验、十字形二向板试验和紧凑拉伸试验等多轴蠕变试验方法;讨论了这些方法的优缺点及其适用范围.在分析欧盟ESIS P10-02缺口圆棒多轴蠕变试验规范的基础上,讨论了如何根据蠕变构件的参考应力、节点应力和失效模式来预测其多轴蠕变断裂寿命.
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