Wszystkie pola: resistance charts - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: The research on characteristic parameters and resistance chart of operation and maintenance trimaran in the sea
Autorzy:: Chen, Y.
Yang, L.
Xie, Y.
Yu, S.
Powiązania:: https://bibliotekanauki.pl/articles/258516.pdf
Data publikacji:: 2016
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: wind power maintenance
trimaran
characteristic parameter
CFD
resistance charts
Opis:: The paper determined the volume ratio of the main hull and side hull and their position characteristic parameter of operation and maintenance trimaran. Numerical simulation technology was used to do the analysis and calculation of trimarans which have different volume ratio of the main and side hull, and on this basis, the paper tried different positions of main and side hull, finally got the trimaran with optimum resistance performance and the chart of trimaran resistance estimation, so as to provide a new way in the selection of feature parameter of offshore wind farm maintenance trimaran and its resistance estimation.
Źródło:: Polish Maritime Research; 2016, S 1; 20-24
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Estimating the Uncertainty of the Result for Tests of Resistance to Environmental Conditions on the Example of the Method of Resistance to Neutral Salt Mist According to EN ISO 9227 / ASTM B117
Autorzy:: Garbacz, Marcin
Powiązania:: https://bibliotekanauki.pl/articles/27311596.pdf
Data publikacji:: 2023
Wydawca:: Instytut Kolejnictwa
Tematy:: neutral salt spray
control charts
within-laboratory reproducibility
interlaboratory reproducibility
bias
metal workpieces
paint coatings
Opis:: Environmental laboratory tests are one of the most frequently performed tests to evaluate materials used, among others, for the construction of rail vehicles. The requirements of the EN ISO/IEC 17025 standard for research laboratories, particularly when evaluating the compliance of materials with the specified requirements, impose on laboratories the need to consider the results of final measurements along with the uncertainties of these results. Due to the complexity of the physical and chemical processes occurring during environmental tests, determining the sources of uncertainty of the measurement result can be very complicated. The article presents one of the methods of estimating the complex uncertainty for environmental tests on the example of corrosion tests using the NORDTEST TR 537 concept of uncertainty estimation. The article presents an exemplary method of uncertainty estimation based on a set of empirical data obtained in an accredited Laboratory for Testing Materials and Structural Elements of the Railway Institute with the use of within-laboratory reproducibility and method bias. Examples of uncertainty estimation depending on the type of tested objects (metal details and paint coatings) and the method of their evaluation after corrosion tests (quantitative and qualitative methods) are presented. The article also briefl y presents the possibilities of interpreting and processing the obtained data as part of the control carried out inside the laboratory on the basis of a simple statistical tool such as Shewhart control charts and the Ishikawa diagram for the method of determining corrosivity in salt chambers, identifying important factors influencing the measurement uncertainty and at the same time showing the complexity the entire research process.
Źródło:: Problemy Kolejnictwa; 2023, 198; 97--117
0552-2145
2544-9451
Pojawia się w:: Problemy Kolejnictwa
Dostawca treści:: Biblioteka Nauki

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