Autor: Maj, R. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Assessment of Durability of the Toothed Segment Based on FEM Analysis and Low Fatigue Cycle Test
Autorzy:: Piekło, J.
Maj, M.
Żuczek, R.
Pysz, S.
Powiązania:: https://bibliotekanauki.pl/articles/381408.pdf
Data publikacji:: 2016
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: design life cycle
fatigue analysis
fatigue criteria
low fatigue cycle test
cykl życia
analiza zmęczeniowa
kryteria zmęczeniowe
niskocyklowe badanie zmęczeniowe
Opis:: The development of a novel design for the toothed segment of drive transmission in longwall shearer is expected to significantly reduce the cost of individual components of the feed system and the related work of repair and renovations, increasing at the same time the safety of mine repair teams. The conducted experimental and numerical analysis of the state of stress and strain in the innovative design of the toothed segment has enabled estimating the maximum effort of the developed structure. Based on the results of fundamental mechanical studies of the cast L20HGSNM steel and fatigue tests combined with the numerical stress/strain analysis, the fatigue life curve was plotted for the examined casting of the rack.
Źródło:: Archives of Foundry Engineering; 2016, 16, 4; 113-118
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: The Influence of the Microporosity on the Mechanical Properties of the AlZnMgCu Alloy, Based on the Numerical Analysis and Laboratory Trials
Autorzy:: Pysz, S.
Żuczek, R.
Piekło, J.
Maj, M.
Powiązania:: https://bibliotekanauki.pl/articles/379604.pdf
Data publikacji:: 2017
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: AlZnMgCu alloy
microporosity
mechanical properties
low fatigue cycle test
stop AlZnMgCu
mikroporowatość
właściwości mechaniczne
niskocyklowe badanie zmęczeniowe
Opis:: The ecological meanings clearly indicates the need of reducing of the concentration of the CO₂ in the atmosphere, which can be accomplished through the lowering of the fuel consumption. This fact implies the research for the new construction solutions regarding the reduction of the weight of vehicles. The reduced weight of the vehicle is also important in the case of application of the alternative propulsion, to extend the lifetime of the batteries with the reduction of recharge cycles. The use of cast alloy AlZnMgCu compliant of plastic forming class 7xxx alloy, are intended to significantly reduce the weight of the structures, while ensuring high strength properties. The wide range of the solidification temperature, which is more than 150°C, characterizes this alloy with a high tendency to create the micro and macro porosity. The study presents the relationship between the cooling rate and the area of occurrence and percentage of microporosity. Then the results were linked to the local tensile strength predicted in the simulation analysis. The evaluation of the microporosity was performed on the basis of the CT (computed tomography) and the analysis of the alloy microstructure. The microstructure analysis was carried out on test specimen obtained from the varying wall thickness of the experimental casting. The evaluation of the mechanical properties was prepared on the basis of the static tensile test and the modified low cycle fatigue test (MLCF).
Źródło:: Archives of Foundry Engineering; 2017, 17, 4; 137-142
1897-3310
2299-2944
Pojawia się w:: Archives of Foundry Engineering
Dostawca treści:: Biblioteka Nauki

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