摘要
SP小冲杆试验法在力学测试中得到了广泛的发展和应用。用SP试验法测得的小试样的载荷-位移-试样厚度变化曲线,通过类比分析以及半解析相结合的方法可以计算材料的特征常数:屈服极限、强度极限、断裂韧性、转变温度和蠕变特性,并且从大量的试验数据、理论模型和有限元计算模型来看,SP试验法测得的结果与相应的大尺寸标准力学测试方法得到的数据有着直接的对应和转换关系。介绍了该试验方法的试验技术、分析方法、研究进展及其应用,并分析了该试验方法目前所存在的一些问题。
Small puneh（SP） test method has been developed and applied widely in mechanical testing. With the SP test method. Variety curve about load-displacement-sample of miniaturized specimens had been gained. Characteristic constant of material could be gained by analogism and analytic method. Such as bended limit, intensity limit, rupture toughness, transition temperature, ereeppage characteristic. The results from SP method and from standard test method were related together with the detailed experimental results and the theory models. Problems, methods, development and application about the standard SP test device were discussed.
出处
《中国测试技术》
2008年第1期10-14,共5页
CHINA MEASUREMENT & TESTING TECHNOLOGY
关键词
小冲杆试验法
性能测试
材料常数
断裂韧性
蠕变特性
Small punch
Capability testing
Constant of material
Rupture toughnes
Creeppage characteristic
