Bitte benutzen Sie diese Referenz, um auf diese Ressource zu verweisen:
doi:10.22028/D291-44360
Titel: | Evaluation of Frequency Effects on Fatigue Life at High Test Frequencies for SAE 1045 Steel Based on Thermography and Electrical Resistance Measurements |
VerfasserIn: | Ziman, Jonas Anton Weber, Fabian Koziol, Janina Otto, Johannes Leon Sauer, Lukas Maximilian Walther, Frank Starke, Peter |
Sprache: | Englisch |
Titel: | Applied Sciences |
Bandnummer: | 15 |
Heft: | 3 |
Verlag/Plattform: | MDPI |
Erscheinungsjahr: | 2025 |
Freie Schlagwörter: | StressLife fatigue life lifetime prediction methods material response resistivity frequency electrical resistance-temperature hysteresis resonant testing S-N curves NDT |
DDC-Sachgruppe: | 500 Naturwissenschaften |
Dokumenttyp: | Journalartikel / Zeitschriftenartikel |
Abstract: | This research provides a method for a reliable fatigue life estimation at high testing frequencies. The investigations are based on the lifetime prediction method StressLifeHCF considering test frequencies of 80 and 260 Hz for normalized SAE 1045 (C45E, 1.1191) steel. Therefore, load increase tests and constant amplitude tests were carried out using a resonant testing rig. To ensure a mechanism-oriented lifetime prediction, the material response to dynamic loading is monitored via temperature and electrical resistance measurements. Due to the higher energy input per time unit, when the test frequency is increased, the heat dissipation also increases. For this reason, a precise differentiation between frequency- and temperature-related effects for adequate fatigue assessment is challenging. To evaluate the temperature’s influence on electrical resistance, an electrical resistance-temperature hysteresis is measured, and the frequency influence is analyzed by considering cyclic deformation curves. In addition to an extension of the fatigue life due to an increased test frequency, the lifetime prediction method was validated for high frequencies. The generated S-N curves show a reliable agreement with the data points from conventional constant amplitude tests. In this context, the temperature correction of the electrical resistance proved to be an important input variable for a reliable lifetime prediction. |
DOI der Erstveröffentlichung: | 10.3390/app15031022 |
URL der Erstveröffentlichung: | https://doi.org/10.3390/app15031022 |
Link zu diesem Datensatz: | urn:nbn:de:bsz:291--ds-443604 hdl:20.500.11880/39685 http://dx.doi.org/10.22028/D291-44360 |
ISSN: | 2076-3417 |
Datum des Eintrags: | 18-Feb-2025 |
Fakultät: | NT - Naturwissenschaftlich- Technische Fakultät |
Fachrichtung: | NT - Materialwissenschaft und Werkstofftechnik |
Professur: | NT - Keiner Professur zugeordnet |
Sammlung: | SciDok - Der Wissenschaftsserver der Universität des Saarlandes |
Dateien zu diesem Datensatz:
Datei | Beschreibung | Größe | Format | |
---|---|---|---|---|
applsci-15-01022-v3.pdf | 4,77 MB | Adobe PDF | Öffnen/Anzeigen |
Diese Ressource wurde unter folgender Copyright-Bestimmung veröffentlicht: Lizenz von Creative Commons