Determination of Plane-Strain Fracture Toughness Using Cracked Round Bar Specimens and their Applicability for Reliability Assessment Calculations

被引：0
|
作者：
Lukac, Janos [1 ]
机构：
[1] Univ Miskolc, Dept Mech Engn, H-3515 Miskolc, Hungary
来源：
11TH INTERNATIONAL CONFERENCE ON THE MECHANICAL BEHAVIOR OF MATERIALS (ICM11) | 2011年 / 10卷
关键词：
linear-elastic plane-strain fracture toughness; crack round bar specimen; elevated temperature; reliability assessment;
D O I：
10.1016/j.proeng.2011.04.415
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The research work aimed to present the usability of the cracked round bar specimen type for the determination of the linear-elastic plain strain fracture toughness values on steels; and to demonstrate the applicability of the testing results for the reliability assessment of structural elements having cracks or crack like defects. Micro-alloyed structural steel and heat resistant steel were tested at elevated temperatures, at 260 degrees C and 410 degrees C, respectively, using small diameter specimens. Four different methods (equations) were used for the evaluation of the tests, and the determined fracture toughness values were compared with each other. Reliability assessment calculations were realised on two structural element models, critical crack sizes and safety factors were determined for all cases. (C) 2011 Published by Elsevier Ltd. Selection and peer-review under responsibility of ICM11
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页数：6
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