Ljubica Milović (Author), Tomaž Vuherer (Author), Zoran Radaković (Author), Blagoj Petrovski (Author), Miodrag D. Janković (Author), Milorad Zrilić (Author), Darko Daničić (Author)

Abstract

The structural integrity and operational safety of welded pressure vessels primarily depends on the behaviour of weldments. In spite of all efforts in material production and improvements in welding techniques, including strict codes, requirements and directives, the crack occurrence in welded structures cannot be completely excluded. This is why fracture mechanics analysis is inevitable in the structural integrity assessment of all welded structures. Examples of practical application of fracture mechanics parameters in cracked pressure vessel structural integrity are considered. This paper shows the determination of parameters of the fatigue crack for constituents of welded joints produced of high strength low alloyed steel Nionikral-70 (yield strength 700 MPa). Results have shown that the position of notch and crack initiation affect the values of the stress intensity range of fatigue threshold ?Kth and parameters in the Paris' equation.

Keywords

HSLA jekla;rast razpoke;HSLA steel;crack growth rate;fatigue threshold;Paris' law;

Data

Language: English
Year of publishing:
Typology: 1.08 - Published Scientific Conference Contribution
Organization: UM FS - Faculty of Mechanical Engineering
UDC: 620.172.24: 669.15
COBISS: 16027414 Link will open in a new window
ISSN: 1451-3749
Views: 1265
Downloads: 26
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Other data

Secondary language: Serbian (cirilic)
Secondary title: Određivanje parametara zamornog rasta prsline kod zavarenih spojeva od HSLA čelika
URN: URN:SI:UM:
Type (COBISS): Not categorized
Pages: str. 183-187
Volume: ǂVol. ǂ11
Issue: ǂno. ǂ3
Chronology: 2011
ID: 1439061