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SteBLife, a New Approach for the Accelerated Generation of Metallic Materials’ Fatigue Data

  • The service life of materials and components exposed to repeated mechanical loads is limited, which is why the understanding of the damage evolution and estimating its fatigue life is of high importance for its technical application. This paper shows how temperature and magnetic field measurement methods can be used to describe the cyclic deformation behaviour of metallic materials and to derive parameters from this, which are used in short-term methods to calculate the fatigue life. Within the SteBLife (stepped-bar fatigue life) approach, only three to five fatigue tests with a stepped fatigue specimen are required to determine a complete S–N or Woehler curve with scatter bands for different failure probabilities. If only a trend S–N curve is required, the number of tests can be reduced to a single fatigue test only. In the framework of this paper, these approaches will be presented for normalised SAE 1045 (C45E) and quenched and tempered SAE 4140 (42CrMo4) steels.

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Metadaten
Author:Ruth AcostaORCiD, Haoran WuORCiD, Jochen Tenkamp, Frank Walther, Peter StarkeORCiD
DOI:https://doi.org/10.3390/met10060798
ISSN:2075-4701
Parent Title (English):Metals
Document Type:Article
Language:English
Date of Publication (online):2020/06/16
Year of first Publication:2020
Release Date:2022/05/17
Tag:Fatigue life evaluation; Magnetic-based measurements; SteBLife; Thermography
Volume:10
Issue:6
Article Number:798
Page Number:17
First Page:1
Last Page:17
Dewey Decimal Classification:6 Technik, Medizin, angewandte Wissenschaften / 60 Technik
Licence (German):License LogoCreative Commons - CC BY - Namensnennung 4.0 International
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