Autor: Strzelecki, P. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Verification of analytical models of the S-N curve within limited fatigue life
Autorzy:: Strzelecki, P.
Sempruch, J.
Powiązania:: https://bibliotekanauki.pl/articles/279631.pdf
Data publikacji:: 2016
Wydawca:: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
Tematy:: fatigue design
S-N curve
high-cycle fatigue
accelerated method
Opis:: This paper presents analytical methods for determination of the curve for a high-cycle fatigue. It has been found based on qualitative and quantitative verification that the error introduced by these methods can be as large as 3-fold length of the experimental life. In addition, the wrong result can lay on either the safe or the unsafe side with equal probability. Therefore, an analytical-and-experimental (hybrid) method has been proposed. Verification of computed characteristics vs. experimental data demonstrated that the “proprietary” proposal reduced the error. In addition, an approximate error depending on the number of experiments has been determined based on the computations.
Źródło:: Journal of Theoretical and Applied Mechanics; 2016, 54, 1; 63-73
1429-2955
Pojawia się w:: Journal of Theoretical and Applied Mechanics
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Analysis of selected mathematical models of high-cycle S-N characteristics
Autorzy:: Strzelecki, P.
Sempruch, J.
Tomaszewski, T.
Powiązania:: https://bibliotekanauki.pl/articles/298416.pdf
Data publikacji:: 2017
Wydawca:: Uniwersytet Warmińsko-Mazurski w Olsztynie
Tematy:: high-cycle fatigue
S-N curve
fatigue tests
number of specimen
steel strength
Opis:: The paper presents two approaches of determining S-N fatigue characteristics. The first is a commonly used and well-documented approach based on the least squares method and staircase method for limited fatigue life and fatigue limit, accordingly. The other approach employs the maximum likelihood method. The analysis of the parameters obtained through both approaches exhibited minor differences. The analysis was performed for four steel construction materials, i.e. C45+C, 45, SUS630 and AISI 1045. It should be noted that the quantity of samples required in the second approach is significantly smaller than with the first approach, which translates into lower duration and costs of tests.
Źródło:: Technical Sciences / University of Warmia and Mazury in Olsztyn; 2017, 20(3); 227-240
1505-4675
2083-4527
Pojawia się w:: Technical Sciences / University of Warmia and Mazury in Olsztyn
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Comparing guidelines concerning construction of the S-N curve within limited fatigue life range
Autorzy:: Strzelecki, P.
Sempruch, J.
Nowicki, K.
Powiązania:: https://bibliotekanauki.pl/articles/260399.pdf
Data publikacji:: 2015
Wydawca:: Politechnika Gdańska. Wydział Inżynierii Mechanicznej i Okrętownictwa
Tematy:: high-cycle fatigue
S-N curve
fatigue tests
Opis:: The article collates guidelines concerning experimental construction of the S-N fatigue curves within a limited fatigue life range. An attempt is made to compare these guidelines, based on experimental data recorded during rotating bending of a notched specimen made of 42CrMo4. The recorded differences in fatigue life values between the constructed curves reach the maximum of 12.2%. According to the above guidelines, the number of tests in particular test series varies from 6 to 28. Based on the performed analysis a conclusion was made that the increase in the number of tests leads to the increase of accuracy but, on the other hand, remarkably increases the time of the experiment and, consequently, its cost. In this context, it is the research worker who, taking into account a possible future use of the fatigue curve, should individually decide about its accuracy.
Źródło:: Polish Maritime Research; 2015, 3; 67-74
1233-2585
Pojawia się w:: Polish Maritime Research
Dostawca treści:: Biblioteka Nauki

Artykuł

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