Wyniki wyszukiwania - BazTech

Ograniczanie wyników

Znaleziono wyników: 3

Liczba wyników na stronie

Wyniki wyszukiwania

Sortuj według:

Ogranicz wyniki do:

Utiliztion of fractal analysis in bonded joints strength prediction

Kniewald D., Guzanova A., Brezinova J.

Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika

2006

z. 68 [231]

89-94

The contribution deals with evaluation of blasted surfaces assigned for bonding joints formation. It was observed, that surface quality evaluation only by roughness parameter Ra is insufficient. Experimental results shows, there is not direct proportion between surface roughness and bonding joints strength, because surface roughness and surface irregularity are not identical terms. There is presented fractal analysis as a suitable tool for surface irregularity evaluation. Conclusion presents fractal dimension as additional parameter for bonding joints strength prediction.

Temperature changes of substrate surface layers during the peening process

Kniewald D., Brezinova J.

Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika

2002

z. 58 [193]

115-120

Contribution tells about thermal influence of substrate during the shot peening by using measurement with thermocouples and thermo vision technique. For comparison we used temperature characteristics of peening substrates changes during the shot peening by different kind of peening mediums in the process of pneumatic peening. By using thermo vision technique there were measured thermal area extensions.

Roughening process modelling in grit blasting

Kniewald D., Guzanova A.

Zeszyty Naukowe Politechniki Rzeszowskiej. Mechanika

2002

z. 58 [193]

121-128

The contribution deals with modelling of ideal surface. Theoretically presents roughening process in grit blasting. There are two occurrences of particle impact analysed: impact by particle edge mid impact by particle peak. Definition of each surface roughness parameter respectively is probationally applicated in three-dimensional space. Both models are evaluated by mentioned space-applicated roughness parameters. Moreover there are also created bearing curves for both models.