Temat: tip resistance - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Verification of strength resistance of sandy soil using small scale penetrometer tests
Autorzy:: Saleem, Hiba D.
Aldefae, Asad H.
Humaish, Wissam H.
Powiązania:: https://bibliotekanauki.pl/articles/35538646.pdf
Data publikacji:: 2021
Wydawca:: Szkoła Główna Gospodarstwa Wiejskiego w Warszawie. Wydawnictwo Szkoły Głównej Gospodarstwa Wiejskiego w Warszawie
Tematy:: cone penetration
tip resistance
sleeve resistance
relative density
angle of internal friction
Opis:: This study focuses on utilizing cone penetrometer models to determine strength (resistance) of sandy soil and also assessment how the relative density and the angle of friction effects on the measured cone penetration resistance in sandy soil. Simple empirical equations are used also to determine the cone penetration resistance components such as the sleeve resistance and the tip resistance. Simple comparison is performed between the measured and calculated soil strength and well agreement is noticed between them.
Źródło:: Scientific Review Engineering and Environmental Sciences; 2021, 30, 2; 304-314
1732-9353
Pojawia się w:: Scientific Review Engineering and Environmental Sciences
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Research on Changes in Microstructures and Mechanical Properties of Welding Caps as a Result of their Usage During Resistance Spot Welding Process
Autorzy:: Rdzawski, Zbigniew
Kwaśniewski, Paweł
Głuchowski, Wojciech
Łagoda, Marek
Maleta, Marcin
Boczkal, Sonia
Franczak, Krystian
Powiązania:: https://bibliotekanauki.pl/articles/2203749.pdf
Data publikacji:: 2023
Wydawca:: Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:: CuCrZr alloy
resistance spot welding
mechanical properties
microanalysis
tip electrodes
Opis:: Mating electrodes made of copper alloys are commonly used for welding galvanized steel sheets used in the production of car bodies. These alloys are characterized by high mechanical properties, a high level of electrical and thermal conductivity as well as the stability of these properties under changing conditions of current, thermal and mechanical load. Much careful attention was paid to the essence of the ongoing structural changes as well as to the mechanical properties in the welding process (RSW - Resistant Spot Welding) of steel sheets, including high-strength ones. There is a lack of research on structural changes and the related mechanical properties occurring in welding electrodes made of copper alloys caused by the welding process. This study is devoted to these issues and contains a critical review of the research results enabling a better understanding of the relationships between the structure and properties of welding electrodes caused by the cyclic welding process. In order to illustrate the phenomena occurring during the welding process, both in the material to be welded and in the tip electrodes, hardness and structural tests were carried out on electrode samples before and after their exploitation. The data collected in the article supplements a certain lack of information in the literature regarding the microstructural aspects of the welding process of galvanized steel sheets for the production of car bodies. The conducted research may be the starting point for the search for more effective materials for the tip electrodes.
Źródło:: Archives of Metallurgy and Materials; 2023, 68, 1; 295--306
1733-3490
Pojawia się w:: Archives of Metallurgy and Materials
Dostawca treści:: Biblioteka Nauki

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