A High Load Clipping Criterion Based on the Probabilistic Extreme Load of Fatigue Spectrum

IF 3.1 2区材料科学 Q2 ENGINEERING, MECHANICAL

Fatigue & Fracture of Engineering Materials & Structures Pub Date : 2025-01-01 DOI:10.1111/ffe.14547

Jing Cao, Zuoting Liu, Hanyu Lin, Weixing Yao

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引用次数: 0

Abstract

The high load with very low occurrence probability in the fatigue load spectrum may introduce the favorable residual stress at the metal structure notch, so it is necessary to clip the high load of spectrum to avoid a dangerous test result. Based on the time-domain extrapolation principle and the extreme value theory, the probability distribution of high load in the whole-life load spectrum was predicted. Considering the dispersion of high load and the influence of high load on the structural fatigue life, a selection criterion of high load clipping level was proposed, which makes the test result under the corresponding clipped spectrum both conservative and authentic. To demonstrate the rationality and practicality of criterion, the transport aircraft load spectrum was extrapolated and the spectral fatigue tests of 2024-T3 aluminum alloy sheet were conducted, providing reference for the design of fatigue test load spectrum of aircraft structure in practical engineering.

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来源期刊

Fatigue & Fracture of Engineering Materials & Structures 工程技术-材料科学：综合

CiteScore

6.30

自引率

18.90%

发文量

256

审稿时长

4 months

期刊介绍： Fatigue & Fracture of Engineering Materials & Structures (FFEMS) encompasses the broad topic of structural integrity which is founded on the mechanics of fatigue and fracture, and is concerned with the reliability and effectiveness of various materials and structural components of any scale or geometry. The editors publish original contributions that will stimulate the intellectual innovation that generates elegant, effective and economic engineering designs. The journal is interdisciplinary and includes papers from scientists and engineers in the fields of materials science, mechanics, physics, chemistry, etc.