{"id":21199,"date":"2022-06-18T15:27:46","date_gmt":"2022-06-18T07:27:46","guid":{"rendered":"https:\/\/www.meetyoucarbide.com\/?p=21199"},"modified":"2022-06-18T15:27:51","modified_gmt":"2022-06-18T07:27:51","slug":"7-factors-affecting-fatigue-of-metal-materials","status":"publish","type":"post","link":"https:\/\/www.meetyoucarbide.com\/de\/7-factors-affecting-fatigue-of-metal-materials\/","title":{"rendered":"7 Faktoren, die die Erm\u00fcdung von Metallwerkstoffen beeinflussen"},"content":{"rendered":"
Die Erm\u00fcdungsfestigkeit von Metallwerkstoffen ist sehr empfindlich gegen\u00fcber verschiedenen externen und internen Faktoren. Zu den externen Faktoren geh\u00f6ren die Form und Gr\u00f6\u00dfe des Teils, die Oberfl\u00e4chenbeschaffenheit und die Betriebsbedingungen, w\u00e4hrend zu den internen Faktoren die Zusammensetzung des Materials selbst, der organisatorische Zustand, die Reinheit und die Eigenspannung geh\u00f6ren. Feine \u00c4nderungen dieser Faktoren verursachen Schwankungen oder sogar gro\u00dfe \u00c4nderungen in den Erm\u00fcdungseigenschaften von Materialien.<\/p>\n\n\n\n
The influence of various factors on fatigue strength is an important aspect of fatigue research. This research will provide a basis for the reasonable structural design of parts, the correct selection of materials and the rational formulation of various cold and hot machining processes, so as to ensure the high fatigue performance of parts.<\/p>\n\n\n\n
The conventional fatigue strength is measured by carefully machined smooth specimens. However, the actual mechanical parts inevitably have different forms of notches, such as steps, keyways, threads and oil holes. The existence of these notches causes stress concentration, so that the maximum actual stress at the root of the notch is much greater than the nominal stress borne by the part, and the fatigue failure of the part often starts from here.<\/p>\n\n\n\n