期刊
MATERIALS & DESIGN
卷 196, 期 -, 页码 -出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2020.109095
关键词
Notch size effect; Fatigue; Life prediction; Critical distance; Weibull distribution
资金
- National Natural Science Foundation of China [11972110, 11672070]
- Sichuan Provincial Key Research and Development Program [2019YFG0348, 2019YFG0350]
- Science and Technology Program of Guangzhou, China [201904010463]
- Opening funds of Key Laboratory of Deep Earth Science and Engineering (Sichuan University), Ministry of Education [DESE201901]
- Fundamental Research Funds for theCentralUniversities [ZYGX2019J040]
Notch and size effects generally show great influence on the fatigue behavior of engineering structures, which plays a vital role during their structural integrity and reliability evaluations. In this study, the influence of notch size effect on fatigue life and critical distance values were investigated. Particularly, a novel method for fatigue life distribution assessment of notched specimens was proposed based on Weibull model and critical distance theory. Experimental data of Al 2024-T351 smooth plate specimens and center hole plate (CHP) specimens with four different notch radii were utilized for model validation and comparison. Results show that all predicted lives of Al 2024-T351 CHP specimens are within the +/- 2 life scatter bands of experimental ones. (c) 2020 The Author(s). Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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