摘要
研究了单轴拉伸颈缩伸长率的测定原理和方法,测定了不同牌号、不同规格的热轧带肋钢筋的颈缩伸长率,测量平均值:HRB335钢筋为27.7％,BSG460钢筋为22.8％,Δδ为3.7％。研究表明,颈缩伸长率测量精度高,具有可比性,满足钢筋检验的要求。
The testing priciple and method of necking extensibility through uniaxial stretch was studied. The necking extensibility in various kinds of hot rolled ribbed steel bar was tested.The average necking extensibility is 27.7 % for HRB335,22.8 % for BSG460,Δδis 3.7 %.The study indicates that the testing method of necking extensibility is of high accuracy and comparability, and it can meet the requirement of hot rolled ribbed steel bar inspection.
出处
《物理测试》
CAS
2002年第6期36-39,共4页
Physics Examination and Testing
关键词
钢筋
拉伸
颈缩伸长率
测定
ribbed bar,stretch,necking extensibility,test
