Ultrasonic Fatigue Testing of Structural Steel S275JR+AR with Insights into Corrosion, Mean Stress and Frequency Effects

Autor:	Yevgen Gorash, Tugrul Comlekci, Gary Styger, James Kelly, Frazer Brownlie, Lewis Milne
Rok vydání:	2023
Předmět:	ultrasonic fatigue corrosion very high cycle fatigue frequency effect structural steel General Materials Science mean stress correction
Zdroj:	Materials Volume 16 Issue 5 Pages: 1799
ISSN:	1996-1944
DOI:	10.3390/ma16051799
Popis:	There are limited experimental data on VHCF for structural steels for >107 cycles. Unalloyed low-carbon steel S275JR+AR is a common structural material for the heavy machinery in minerals, sand and aggregate applications. The purpose of this research is to investigate the fatigue behaviour in the gigacycle domain (>109 cycles) for S275JR+AR grade steel. This is achieved using accelerated ultrasonic fatigue testing in as-manufactured, pre-corroded and non-zero mean stress conditions. As internal heat generation is a massive challenge for ultrasonic fatigue testing of structural steels which exhibit a pronounced frequency effect, effective temperature control is crucial for implementation of testing. The frequency effect is assessed by comparing the test data at 20 kHz and 15–20 Hz. Its contribution is significant, as there is no overlap between the stress ranges of interest. The obtained data are intended to be applied to the fatigue assessments of the equipment operating at the frequency for up to 1010 cycles over years of continuous service.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a05d2377d71f3131e22cc1d51c1af09 https://doi.org/10.3390/ma16051799 Zobrazit plný text záznamu Plný text ve formátu PDF Plný text ve formátu HTML
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