Căutare Fascicula VIII după Autor "Gheorghieș, Constantin"

Afișează articolele 1-4 of 4

    • Characterization of Materials Surface by X-Ray Reflectivity Measurements 

      Gheorghieș, Constantin; Gheorghieș, Livia; Atanasiu, Valeriu (Universitatea ”Dunărea de Jos” din Galați, 2009)
      The mechanical or physical properties of surface determine a certain behaviour of material in various working conditions. For example, the roughness of surface influences the value of friction coefficient. X-ray reflectivity ...

    • Diffractometry Analysis on Non-Conventional Treated Steels after Tribological Tests 

      Papadatu, Carmen-Penelopi; Gheorghieș, Constantin; Ștefănescu, Ioan (Universitatea ”Dunărea de Jos” din Galați, 2009)
      Two steel grades were subjected to a nitro-carburized thermo-chemical treatment after thermo-magnetic treatments. The contact was studied employing the concept of tribosystem and tribomodel. The structural aspects into ...

    • Preliminary Results on the use of Palm Oil and Shea Butter in Lubrication Process in Food Industry 

      Bike Mbah, Jean Baptiste; Kamga, Richard; Gheorghieș, Constantin; Praisler, Mirela (Universitatea ”Dunărea de Jos” din Galați, 2009)
      In this study, vegetal oils (palm oil and shea butter) are analyzed for their uses in lubrication of mechanical part of machines in food industry. These vegetal oils were analyzed by X-ray diffraction and transmission ...

    • Roughness as Small Surface Defects and Microstructure Changes in the Fatigue Process 

      Mereuță, Valentin; Gheorghieș, Constantin; Palaghian, Liviu (UDJG, 2011)
      Examinations in detail using X-radiation diffraction of the dislocation substructure in fine-grained S355JR steels plate specimen fatigued with constant amplitude were carried out to investigate the correlation between the ...