Dejan Momčilović (Author), Radivoje Mitrović (Author), Ivana Atanasovska (Author), Tomaž Vuherer (Author)

Abstract

This paper describes the influence of corrosion on stress concentration factor and crack initiation at shaftflange transition section. The case study of hydraulic turbine shaft failure is used as the basis for this research. The quantification of the stress concentrators was accomplished by the usage of Theory of critical distances (TCD) in the prediction of high-cycle fatigue behavior in machine parts and systems. The stresses obtained by Finite Element Analysis, was used as an entry values for application of Theory of critical distances. The TCD represents a major extension of linear elastic fracture mechanics, allowing it to be used for short cracks as well as for stress concentrations of arbitrary geometry. Presented methodology is particular valid for machine parts of non-standard dimensions. The significance of results presented in this paper is that TCD and developed methodology can be used in preventing failures in power industry.

Keywords

fatigue;fracture;turbine shaft;theory of critical distances;

Data

Language: English
Year of publishing:
Typology: 1.01 - Original Scientific Article
Organization: UM FS - Faculty of Mechanical Engineering
UDC: 539.431
COBISS: 16586518 Link will open in a new window
ISSN: 1821-1259
Views: 734
Downloads: 42
Average score: 0 (0 votes)
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Other data

Secondary language: Unknown
Secondary keywords: korozija;utrujenost materiala;
URN: URN:SI:UM:
Type (COBISS): Not categorized
Pages: str. 231-236
Volume: ǂVol. ǂ4
Issue: ǂno. ǂ4
Chronology: 2012
Keywords (UDC): mathematics;natural sciences;naravoslovne vede;matematika;physics;fizika;physical nature of matter;fizikalna zgradba snovi;strength;resistance to stress;trdnost;trdnost pri obremenitvah;
ID: 1439292