IDENTIFICATION OF FATIGUE DAMAGE OF METAL SHEETS MADE OF MATERIAL DD11 FROM AN ANALYSIS OF VIBRATION SIGNALS
Journal Title: Tribologia - Year 2017, Vol 276, Issue 6
Abstract
This paper presents a method of identifying fatigue cracking of specimens made of material DD11 based on selected characteristics of the vibration signal. Acceleration of vibrations of the free end of a specimen was taken for an analysis of specimen properties during the process of fatigue cracking. Features which enable identification and monitoring of the process of specimen cross-section cracking were indicated for the diagnostic signal. The study was conducted on an original test stand in which the process of the destruction of material cross-section is caused by a specimen’s inertia force. The study results indicated that the presented method of identification of a specimen structure change can be applied to identify the technical condition of a structure in regard to a loss of continuity and structure properties (e.g., mechanical and fatigue cracking). The results of vibration analysis were verified by penetration methods and by microscopic observation.
Authors and Affiliations
Arkadiusz RYCHLIK, Krzysztof LIGIER, Władysław KOZUBEL
Keywords
Related Articles
- EP ID EP254817
- DOI 10.5604/01.3001.0010.8065
- Views 54
- Downloads 0
EVALUATION OF THE LUBRICATION EFFICIENCY OF GREASES ACCORDING TO CRITERION OF WEAR EXPERIMENTALLY DETERMINED AT VARIABLE VALUES OF MOTION PARAMETERS
The results of tribological investigations into the lubrication efficiency of greases in steel sliding pairs working in mixed friction conditions are presented. The lubrication efficiency was evaluated according to the c...
THE EFFECT OF FILLER CONCENTRATION IN GREASE ON THE EFFICIENCY OF THE LUBRICATION OF STEEL SLIDING PAIRS WORKING IN MIXED LUBRICATION
The paper presents the results of preliminary studies into the effect of different fillers (Bi2O3, Sb2O3, CuO, ZnO, TiO2) in calcium grease (Machine Grease 2) on the efficiency of the lubrication of steel sliding pairs....
Mechanizm powstawania białej warstwy w kontekście zużycia narzędzi podczas kształtowania stalowych elementów konstrukcyjnych
Kształtowanie na gorąco lub ciepło elementów stalowych konstrukcyjnych stwarza warunki sprzyjające tworzeniu się na powierzchni narzędzi stalowych tzw. białej warstwy. Tworzenie się białej warstwy w wyniku procesów tribo...
THE EFFECT OF HUMIDITY AND TEMPERATURE OF AIR ON THE STATIC FRICTION COEFFICIENT OF SELECTED METAL–POLYMER SLIDING COUPLES
Environmental conditions significantly affect the value of the coefficient of static friction during co-operation of sliding machine elements. The studies about the influence of temperature on the friction processes can...
ZALEŻNOŚĆ NAPRĘŻENIA STYCZNEGO OD CZASU ŚCINANIA WYBRANYCH KOMPOZYCJI SMAROWYCH
W pracy przedstawiono wyniki badań nad wpływem wypełniaczy wprowadzanych do smarów plastycznych na zmianę wartości naprężenia stycznego powstałych kompozycji smarowych. Wypełniaczami tymi były proszki grafitu, dwusiarczk...