Abstract：Several abnormal situations in measuring the yield strength of metallic materials are discussed，such as specimen slipping，the extensometer failure in measuring Rp0.2，the parallel length errorinmeasuring Rp0.2 when using the displacement method.The characteristics of the test curve under abnormal situations are described.The causes and effects on the test resultsareanalyzed，and preventive measures are put forward. In daily work，we should not blindly believe in the measurement results automatically obtained by the test machine. After each test，we should check whether the test curve is normal or not，and whether the selected yield point on the test curve is normal or not.
出版日期: 2018-04-15
引用本文:
谢洪波. 金属材料屈服强度测量中几种异常情形分析[J]. 物理测试, 2019, 37(2): 23-27.
XIE Hong-bo. Analysis of several abnormal situations in measuring yield strength of metallic materials. PHYSICS EXAMINATION AND TESTING, 2019, 37(2): 23-27.
2019, Vol. 37 
