期刊
SCRIPTA MATERIALIA
卷 58, 期 11, 页码 1014-1017出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2008.01.039
关键词
fatigue; gigacycle fatigue; ultrasonic fatigue testing; high-strength steel; size effect
Ultrasonic fatigue testing was conducted for high-strength steel, employing enlarged specimens with a straight section. The results showed good agreement with conventional servohydraulic fatigue test results, demonstrating the validity of ultrasonic fatigue testing using these enlarged specimens under conditions where fish-eye fractures occur. When the results were compared with those using conventional specimens, specimen size effects were clearly observed: enlarged specimens showed lower fatigue strength due to appearance of larger inclusions in the fish-eye fracture origin. (c) 2008 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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