Zobrazeno 1 - 10
of 23
pro vyhledávání: '"Hermann Uchtmann"'
Publikováno v:
Bautechnik. 92:403-411
Selbstbohrende Vollgewindeschrauben, die ohne Vorbohrung eingeschraubt werden konnen, haben sich neben ihrer Funktion als Befestigungsmittel im Holzbau auch als leistungsfahige Bauteilverstarkungen und als stabformige Fugungselemente erwiesen. Fur di
Publikováno v:
International Congress on Applications of Lasers & Electro-Optics.
Laser drilling is a conventional technology for drilling cooling holes into turbomachinery components such as turbine blades. The laser drilling process often causes microstructure changes and induces defects such as recast layers and cracks. These e
Publikováno v:
Journal of Structural Chemistry. 43:101-107
Variation of the unit cell parameters of Na2C2O4 is investigated by powder diffractometry in diamond anvils when hydrostatic pressure is increased to 6.5 GPa. Anisotropic distortion of the structure was observed up to about 3.8 GPa, whereupon a trans
Publikováno v:
International Congress on Applications of Lasers & Electro-Optics.
One of the main applications for laser drilling is the manufacturing of cooling holes with diameters of e.g. 500 µm in turbine components such as turbine blades and vanes or combustion chambers. Nowadays, these cooling holes are drilled by using fla
Publikováno v:
The Journal of Chemical Physics. 113:4171-4178
The first experimental study of the spectral dependence of the nucleation of cesium vapor caused by light absorption is carried out in a diffusion cloud chamber. The spectral dependence of the nucleation rate is compared with the absorption and ioniz
Publikováno v:
High Pressure Research. 17:79-99
The effect of pressure on the two polymorphs of [CO(NH3)5NO2]I2 (phase I-orthorhombic, S.G. Pnma; phase II-monoclinic, S.G. C2/m) was studied by X-ray powder diffraction in a diamond anvil cell (DAC). In the presence of the ethanol-methanol-water mix
Autor:
Jürgen Krelle, Habib Ben Bacha, Aref Maalej, Martin Engelhardt, Hermann Uchtmann, Hamed Ben Dhia, Isabell Ulber
Publikováno v:
Desalination. 122:177-183
In this article, the survey, description and perspectives of a new solar-based desalination technique—solar multiple condensation evaporation cycle (SMCEC) — are presented. This technique uses solar energy to heat brackish water and does not poll
Publikováno v:
The Journal of Chemical Physics. 110:11505-11510
The homogeneous nucleation of supersaturated cesium vapor was investigated in a thermal diffusion cloud chamber operating in both the upward and the downward mode. In the upward operating mode, critical supersaturations were measured in the temperatu
Publikováno v:
Atmospheric Research. 46:211-222
The homogeneous nucleation behavior of supersaturated cesium vapor was investigated in a redesigned upward thermal diffusion cloud chamber in the temperature range between 359 K and 554 K. Critical supersaturations as a function of temperature were m
Publikováno v:
International Congress on Applications of Lasers & Electro-Optics.
This paper reports on the analysis of process emissions in order to determine the bore hole diameter during laser percussion drilling. The visible light emitted from the plasma during a laser percussion drilling process is recorded by a high-speed ca