Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Powiadomienia systemowe

Sesja wygasła!

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Scanning acoustic microscopy for non-destructive tests of electronic components

Sutor A., Winkler G., Bischoff G.

Electron Technology : Internet Journal

2005/2006

Vol. 37/38, nr 7

1-4

Scanning acoustic microscopy (SAM) is an attractive tool in the non-destructive inspection of printed circuit boards, thick film, thin layers and microelectronic packages. For example it permits to detect subsurface delaminations, cracks and pores (air bubbles) for different materials: metals, plastics, ceramics or composites. The examples of different electronic components and circuits observed in SONOSCAN D-9000 ultrasonic microscope with frequencies of transducers between 10 Mhz and MHz and 230 MHz are presented in this paper.

Homogeneous / heterogeneous condensation dynamics in turbulent low pressure turbine flows

Winkler G., Heiler M., Schnerr G. H.

Zeszyty Naukowe. Cieplne Maszyny Przepływowe - Turbomachinery / Politechnika Łódzka

1999

nr 115

445--456

This paper is dedicated to gain a better understanding of condensation phenomena in turbulent transonic environment. A 2-D finite volume code has been developed that does also include three different condensation models: pure homogeneous, pure heterogeneous and simultaneous homogeneous/heterogeneous condensation, as well as imperfect gas effects. To be applicable to a variety of technical problems, the code has been extended by a low Reynolds number two equation turbulence model [2 , 14] . The results show excellent agreement with experiments. (Applications: steam turbine L, tip section of steam turbine Bak).

Controlling of photogrammetric object determination by GPS

Winkler G., Szucs L., Recsei I.

Reports on Geodesy

1999

z. 5/46

47-51