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Fatigue Properties of Steels Under Multiaxial Loading
Václavík, Martin ; Svoboda, Jaroslav
Study of combined loading influence to fatigue lifetime of smooth polished specimens made by the material 11523.1. Followed are the stress field changes at various rates of shear and normal loading, and the coherence between the level of particular stress components and specimen fatigue lifetime. Three hypotheses for limit stress computations (HMH, Findley´s and Dang Van's)were verified.
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Stressing optimization under shortened fatigue tests applications
Svoboda, Jaroslav
Paper sumarizes results of works focused on parameter optimization of the Rešet method of shortened fatigue tests that can be successfully applied to fatigue strength evaluation of dynamically stressed real structures. Works are aimed particularly at so called step loading speed, which significantly influences the test results.
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Statistical processingof fatigue tests in LATEX
Balda, Miroslav ; Svoboda, Jaroslav ; Fröhlich, Vladislav
The paper deals with a problem of making up protocols on material fatigue tests containing measured data, their regression, 90% and 95% confidence intervals, a diagram of all these functions, and a table of the processing results. All these steps are done in one computer run in the LATEX environment without any import of external graphics or results. New styles have been developed for the purpose. The system is fast reliable.
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