Dynamic fracture mechanics testing of the HSLA steel

被引：0

作者：

Radakovic, Z ^{[1
]}

Lenkey, GB ^{[1
]}

Sedmak, A ^{[1
]}

机构：

[1] Fac Mech Engn, YU-11000 Belgrade, Yugoslavia

来源：

ECF 12: FRACTURE FROM DEFECTS, VOLS. I-III | 1998年

关键词：

D O I：

暂无

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The high strength low alloyed steel (HSLA) has been tested using instrumented Charpy pendulum in order to assess its impact fracture resistance. Testing was performed at different temperatures (-70 degrees C; -30 degrees C; +20 degrees C), using different energy levels (300 J and 62.5 J) on standard three-point bending specimens with different crack lengths (a/W=0.35 divided by 0.65), having the parallel and perpendicular orientation to rolling. The applied magnetic emission (ME) technique was used to determine initiation of crack propagation. The ME signal was recorded by digital oscilloscope and used to determine initiation of brittle fracture, whereas for ductile fracture the signal was integrated (MF). The representative dynamic fracture property, J(Id), is determined from data obtained from measurements that are handled by a spreadsheet procedure.

引用

页码：1267 / 1272

页数：6