哈尔滨大电机研究所 关键词] 水轮机转轮；盲孔法；残余应力；焊接接头 [gap=787]Key words: hydroturbine runners; the hole drilling method; residual stress; welding joint
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The scope of the residual stresses determined by the hole drilling method should not exceed one half of the material's yield strength.
钻孔法测量残余应力的范围是应力不超过材料屈服极限的一半。
The theory on the measurement of the residual stresses by the hole drilling method was introduced, and the relationship between the relieved strains and the residual stresses was given.
介绍了小孔释放法测量残余应力的原理，给出释放应变与残余应力之间的关系公式。
The relieved coefficients during the measurement of the residual stresses in the fiber reinforced composites by the hole drilling method were given with conversion of the two coordinate systems.
针对纤维增强复合材料的属性特点，应用坐标系转换原理推导出通孔法测量复合材料残余应力时的应力释放系数公式。
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