Wszystkie pola: ultrasonic vibrations - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Characterization of soil aggregate stability using low intensity ultrasonic vibrations
Autorzy:: Schomakers, J.
Mentler, A.
Steurer, T.
Klik, A.
Mayer, H.
Powiązania:: https://bibliotekanauki.pl/articles/24235.pdf
Data publikacji:: 2011
Wydawca:: Polska Akademia Nauk. Instytut Agrofizyki PAN
Tematy:: soil aggregate
stability
low intensity vibration
ultrasonic vibration
cavitation limit
carbon distribution
tillage
ultrasonic dispersion
ultrasonic method
Źródło:: International Agrophysics; 2011, 25, 2
0236-8722
Pojawia się w:: International Agrophysics
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Ultrasonic-vibration assisted arc-welding of aluminum alloys
Autorzy:: Krajewski, A.
Włosiński, W.
Chmielewski, T.
Kołodziejczak, P.
Powiązania:: https://bibliotekanauki.pl/articles/201701.pdf
Data publikacji:: 2012
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: ultrasonic vibrations
MIG/TIG welding
aluminum alloys
structure
microhardness
Opis:: The structure and hardness of the surface-welds and fusion-welds made on a 2017A aluminum alloy waveguide using the MIG and TIG methods with and without the participation of ultrasonic vibrations were examined. Cross-sections of the fusions and surface-welds thus obtained were observed in a microscope and the hardness distributions were determined. The aim of the study was to analyze the effects of the ultrasonic vibrations applied to the melted metal pool by a vibrating substrate which in our experiments was a waveguide. The interactions of the ultrasonic vibrations with the molten metal during its solidification and also with the heat-affected zone were examined at various phases of the vibration wave. The ultrasonic vibrations affected the structure of a weld. These changes are strongly depended on the wave phase.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2012, 60, 4; 841-852
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Support with mechanical vibrations of welding processes ‒ review of own research
Autorzy:: Krajewski, Arkadiusz
Kołodziejczak, Paweł
Cegielski, Paweł
Grześ, Jarosław
Powiązania:: https://bibliotekanauki.pl/articles/1819229.pdf
Data publikacji:: 2021
Wydawca:: Stowarzyszenie Inżynierów i Techników Mechaników Polskich
Tematy:: spawanie
wibracje mechaniczne
wibracje ultradźwiękowe
wibracje akustyczne
śrutowanie
MIG
MAG
TIG
LW
RW
welding
mechanical vibration
ultrasonic vibration
acoustic vibration
shot-blasting
Opis:: The article discusses the most important original achievements in the use of high-power mechanical vibrations with low and ultrasonic frequency in various welding processes such as (131) MIG, (135) MAG, (141) TIG, (21) RW, (522) LW, (45) diffusion welding and (924) brazing in relation to various basic materials such as structural steel and aluminum alloys. Mechanical vibrations were introduced by means of ultrasonic vibrating systems and using the shot-blasting process, as well as acoustic influence. As part of the comparative research, the structure and hardness analysis of HV0.1 was presented. The obtained results indicate that both low-frequency and ultrasonic frequency vibrations significantly change the properties of the resulting structures affected by mechanical vibrations. The scale of these changes varies depending on the frequency and parameters specific to each of the welding processes used. The obtained results allow us to conclude that the skilful application of mechanical vibrations accompanying welding processes can contribute to the reduction of grain sizes, to change the depth or width of penetration and to lowering hardness in the sensitive heat affected zone area.
Źródło:: Welding Technology Review; 2021, 93, 3; 57--73
0033-2364
2449-7959
Pojawia się w:: Welding Technology Review
Dostawca treści:: Biblioteka Nauki

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