A novel methodology for bending ultrasonic fatigue testing in the VHCF regime

被引：4

作者：

Wan, Jie ^{[1
,2
]}

Zhao, Jiucheng ^{[1
,2
]}

Zhou, Liming ^{[2
]}

Zhang, Shizhong ^{[2
,3
]}

Zhao, Hongwei ^{[1
,2
,3
]}

机构：

[1] Jilin Univ, Minist Educ, Key Lab CNC Equipment Reliabil, Changchun 130025, Peoples R China

[2] Jilin Univ, Sch Mech & Aerosp Engn, Changchun 130025, Peoples R China

[3] Jilin Univ, Chongqing Res Inst, Chongqing 401120, Peoples R China

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 170卷

基金：

中国国家自然科学基金;

关键词：

Bending fatigue; Very-high-cycle fatigue; Ultrasonic fatigue testing; Timoshenko beam; Transfer matrix method; HIGH-CYCLE-FATIGUE; TITANIUM-ALLOY; BEHAVIOR; TI-6AL-4V; SPECIMENS; STRENGTH; BLADES; ENGINE; BEAMS;

D O I：

10.1016/j.ijfatigue.2023.107562

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Deep research on the bending fatigue behaviors of rotor blade materials in the very-high-cycle fatigue (VHCF) regime is necessary for designing the blade. In this study, a new cantilever specimen with variable thickness and the corresponding methodology based on the Timoshenko beam theory and the transfer matrix method are proposed for bending ultrasonic fatigue testing in the VHCF regime. This methodology is applied to achieve the desired second-order stress state and to estimate the stress by displacement. The feasibility and applicability of the methodology are demonstrated by the results of Finite Element Analysis and the experimental results from Ti-6Al-4V specimens.

引用

页数：14

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