Autor: Lech, Adam - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Spectral characteristics of the Arctic ornithogenic tundra vegetation in Hornsund area, SW Spitsbergen
Autorzy:: Zmudczyńska, Katarzyna
Zwolicki, Adrian
Barcikowski, Mateusz
Barcikowski, Adam
Stempniewicz, Lech
Powiązania:: https://bibliotekanauki.pl/articles/2051652.pdf
Data publikacji:: 2009
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: Arctic
Spitsbergen
ornithogenic tundra
radiometric characteristics
spectral reflectance
Źródło:: Polish Polar Research; 2009, 30, 3; 249-262
0138-0338
2081-8262
Pojawia się w:: Polish Polar Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Research of damage to the rear wheel rim in a tipper-truck
Autorzy:: Kubiak, Przemyslaw
Wozniak, Marek
Zakrzewski, Sergiusz
Siczek, Krzysztof
Rylski, Adam
Mrowicki, Adam
Matej, Jan
Deda, Jakub
Knap, Lech
Powiązania:: https://bibliotekanauki.pl/articles/2173686.pdf
Data publikacji:: 2022
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: tipper-truck
rim
tire
failure
wywrotka
obręcz
opona
awaria
Opis:: Serious damage to the inner rim of the rear twin wheel in one dump truck was noted during the operation of the fleet performing transport tasks. It was a drive wheel, and its damage occurred while driving with a load exceeding the permissible value. The examination of selected fragments of the damaged rim surface was conducted visually as well as using a digital microscope with a portable head. The measurements of the Vickers hardness and microscopic observations of the material structure of the sample cut along the thickness of the rim disk were carried out. The drive torque loading of the twin wheels of the tipper-truck rear axle, under their mating with different kinds of road roughness and under various vertical loads of the wheels was calculated. An analysis of stress distributions in the rim modelled using the Finite Element Method was also conducted for several possible scenarios of wheel loading. The damage to the rim was caused by simultaneous action of several factors, such as overloading the car, poor condition of the tires, loading the drive wheel by a part of the vehicle weight and the driving torque, and hitting a wheel on a cavity in a dirt road, causing a temporary relief of one of the tires on a twin wheel.
Źródło:: Bulletin of the Polish Academy of Sciences. Technical Sciences; 2022, 70, 3; art. no. e141000
0239-7528
Pojawia się w:: Bulletin of the Polish Academy of Sciences. Technical Sciences
Dostawca treści:: Biblioteka Nauki

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