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Wyświetlanie 1-2 z 2
Tytuł:
Impact of the wedge angle on the specific cutting energy of black radish during the exploitation of guillotine knife
Autorzy:
Starek, A.
Kusińska, E.
Powiązania:
https://bibliotekanauki.pl/articles/411422.pdf
Data publikacji:
2016
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
cutting
specific cutting energy
knife wedge angle
place of sampling
orientation of fibers
Opis:
The paper presents the influence of cutting conditions of black radish guillotine knife on specific cutting energy value. The tests were carried out using the texture meter: Texture Analyser TA.XTplus Stable Micro Systems. The structure of the black radish is heterogeneous and, therefore, in order to study the specific cutting energy of black radish its parenchyma was taken from a few specific places. The samples were cut with a longitudinal and transverse orientation of the fibers relative to movement of the working tool. The cutting process was carried at the knives wedge angles: 2.5°; 5°; 7.5°; 10°; 12.5°; 15°, the knives moved at the speed of 0.83 mm·s-1. The results were statistically analyzed using the program Statistica 8.0. The statistical analysis showed the impact of the place of sampling, direction of fibers in the black radish parenchyma samples and knife wedge angle on the specific cutting energy. The black radish parenchyma samples obtained from the core of the top layer showed the highest specific energy of cutting. Furthermore, the specific cutting energy showed higher value when the orientation of fibers was in the transverse direction rather than longitudinal. The highest value of the specific cutting energy was obtained for the cutting knife wedge angle of 15°, and the lowest for the knife with β = 2.5° wedge angle.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2016, 5, 3; 111-122
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Unitary energy in the black radish cutting process
Autorzy:
Starek, A.
Kusińska, E.
Powiązania:
https://bibliotekanauki.pl/articles/411383.pdf
Data publikacji:
2017
Wydawca:
Polska Akademia Nauk. Oddział w Lublinie PAN
Tematy:
unitary cutting energy
knife sharpening angle
cutting velocity
energia jednostkowa cięcia
kąt ostrzenia noża
prędkość cięcia
Opis:
The article presents the methodology and results of measurement of the unitary energy in cutting black radish. The values of the unitary energy of cutting the root parenchyma of black radish sampled in several areas were analysed. To compare the values of the unitary cutting energy related to the differences in the structure of the black radish root, the samples were cut at the longitudinal and transverse orientation of the fibres relative to the movement of the working tool. The cutting process was carried out using knives with a sharpening angle of 5°, 10°, and 15° and cutting velocity values of 100 mm·s-1, 200 mm·s-1, 300 mm·s-1, and 400 mm·s-1. The results obtained were subjected to mathematical analysis in Statistica 8.0 software. The statistical analysis showed a significant correlation between the value of the unitary energy and sampling site, the knife sharpening angle and the velocity of knife movement. The highest value of the unitary cutting energy was obtained at a sharpening angle of β=15° and the lowest value was observed when the knife with the β=5° sharpening angle was used. The unitary cutting energy decreased with the increase in the knife movement velocity.
Źródło:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes; 2017, 6, 2; 103-108
2084-5715
Pojawia się w:
ECONTECHMOD : An International Quarterly Journal on Economics of Technology and Modelling Processes
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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