National Repository of Grey Literature 276 records found  beginprevious255 - 264nextend  jump to record: Search took 0.01 seconds. 
Nízkocyklová únava INCONELu 792-5A při 900 °C
Petrenec, Martin ; Obrtlík, Karel ; Man, Jiří ; Polák, Jaroslav
The aim of the present paper is to investigate the low cycle fatigue characteristics of cast nickel base superalloy INCONEL 792-5A in symmetrical total strain cycling at the temperature 900 °C.
View from statistics perspective on fatigue crack growth influenced by constraint effect
Seitl, Stanislav
The issue of the fatigue crack behavior is studied in connectivity on different levels of constraint. The constraint is quantified by using T-stress. The problems are studied on two different forms of specimen (Center cracked plate tension specimen and compact tension specimen) that have different values of T-stress for the same value of the stress intensity factor.
Problems of a limit fatigue stress under combined loading
Balda, Miroslav ; Svoboda, Jaroslav
The theory of fatigue life of structures under combined synchronized harmonic loading has been extended. Limit stress of combined loadding corresponding the fatigue limits has been assembtet from experimental data. They obey both the law of ellipse for in-phaseloading and a bit modified law for out-of-phase loading. A new formula for its exponent has been built.
Fatigue life estimation using strain energy density
Plánička, F. ; Vacek, V. ; Václavík, Martin
A new approach to the fatigue life estimation has been developed. It is based on the cumulation of energy spent on plastic deformations. Theoretical conclusions are supported by experimental results.
An Influence of out-of-phase combined loading
Svoboda, Jaroslav ; Václavík, Martin
The paper deals with a problem of finding a fatigue limit criterion for components subjected to combined out-of-phase loading.
Mesoscopic scale approach for fatigue
Václavík, Martin
Mesoscopis scale approach for fatigue limit criterion of components subjected to multiaxial loading is described in this paper.
The influence of shear and normal stresses ratio on fatigue crack propagation
Václavík, Martin
Experimental discovery and an analytic description the influence of shear and normal stresses ratio on propagation of long fatigue cracks.
Propagation of Fatigue Cracks under Multiaxial Loading
Václavík, Martin
Work is aimed at fatigue properties of the steel 11523.1 specimens under alternating push-pull and torsion. Velicity, direction and inicialization location of a fatigue crack is detected. Results are compared to predicted values acording to various accesses and authors.
Criterion for fatigue strength prediction under combined multiaxial loading
Zemandl, Milan
Criterion for fatigue lifetime predictions and strength under multiaxial combined loading.
Processing of undersampled blade signals
Balda, Miroslav
The paper deals with a method of processing samples of instantaneous positions of blades of a turbine wheel when passing along a sensor attached to the stator of the turbine. The signals are highly undersampled, since the natural frequencies of blades are much higher than the sampling frequency. The paper reveals the way of signal reconstruction based on a priory knowledge of the blade natural frequencies.

National Repository of Grey Literature : 276 records found   beginprevious255 - 264nextend  jump to record:
Interested in being notified about new results for this query?
Subscribe to the RSS feed.