Application of Two Independent Measurement Techniques for Determination of Ductile Crack Growth Initiation

被引：8
|
作者：
Z. Radakovic
Gy. B. Lenkey
V. Grabulov
A. Sedmak
机构：
[1] Faculty of Mechanical Engineering,
[2] BAY ZOLTÁN Institute for Logistics and Production Systems,undefined
[3] University of Miskolc,undefined
[4] Military Technical Institute,undefined
来源：
International Journal of Fracture | 1999年 / 96卷 / 2期
关键词：
Crack Initiation; Critical Fracture; Potential Drop; Charpy Impact; Digital Oscilloscope;
D O I：
10.1023/A:1018782517614
中图分类号：
学科分类号：
摘要：
Charpy impact testing of the high strength low-alloyed steel has been performed by simultaneously recording two independent signals. The magnetic emission (ME) and potential drop (PD) techniques were used to determine critical crack initiation properties on standard three-point pre-cracked bending specimens at room temperature. Both signals (ME and PD) were recorded by digital oscilloscope with a high sampling rate and compared, with the purpose of more precise identification of critical fracture mechanics parameters determining the onset of ductile crack growth.
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页码：23 / 28
页数：5
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