前言本试验是我厂中央试验室金相组在进行《2Cr13叶片晶粒度对性能的影响》课题中提出来的。根据要求,我们对三种不同直径的试样进行了三维光弹性实验应力分析。采用冻结切片法,我们测得了三种情况下的应力集中系数,并与有关的理论资料进行了比较,同时还进行了误差分析,最后给出了三种试样的应力集中系数。 Preface This test is made by the metallographic group of our central laboratory under the topic of “Effect of grain size of 2Cr13 on performance”. On request, we performed three-dimensional photoelastic experimental stress analysis on three different diameter specimens. Using the frozen slice method, we measured the stress concentration factor in three cases, compared with the related theoretical data, and also carried out the error analysis, and finally gave the stress concentration factor of the three samples.