Tension-tension fatigue behaviours of notched freestanding pure Ti foils with different thicknesses

Meiqi Yao; Hongyang Wang; Yi Zhao; Jiangbo Sha

doi:10.1016/j.ijfatigue.2018.05.009

Tension-tension fatigue behaviours of notched freestanding pure Ti foils with different thicknesses

Meiqi Yao
, Hongyang Wang
, Yi Zhao
, Jiangbo Sha^*

^*此作品的通讯作者

Beihang University

科研成果: 期刊稿件 › 文章 › 同行评审

3 引用（Scopus）

摘要

This work addresses the mode I fatigue crack propagation behaviours of pure Ti foils using freestanding notched rectangular specimens under tension-tension cyclic loading. Compared to the 50-μm-thick foil, the 30-μm-thick foil exhibited a higher yield strength (σ_y) but a lower fracture toughness (K_Q) and fatigue life (N_f) for the same loading conditions. The Paris constant m decreased from 5.12 to 4.45, when the foil thickness increased from 30 μm to 50 μm. The incomplete self-similarity parameter Z at the crack tip was found to be higher in the 30-μm-thick foils, resulting in a higher Paris constant m than that in the 50-μm-thick foils.

源语言	英语
页（从-至）	65-73
页数	9
期刊	International Journal of Fatigue
卷	114
DOI	https://doi.org/10.1016/j.ijfatigue.2018.05.009
出版状态	已出版 - 9月 2018
已对外发布	是

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@article{0f0b70a1900c459887983e75c5a19252,

title = "Tension-tension fatigue behaviours of notched freestanding pure Ti foils with different thicknesses",

abstract = "This work addresses the mode I fatigue crack propagation behaviours of pure Ti foils using freestanding notched rectangular specimens under tension-tension cyclic loading. Compared to the 50-μm-thick foil, the 30-μm-thick foil exhibited a higher yield strength (σy) but a lower fracture toughness (KQ) and fatigue life (Nf) for the same loading conditions. The Paris constant m decreased from 5.12 to 4.45, when the foil thickness increased from 30 μm to 50 μm. The incomplete self-similarity parameter Z at the crack tip was found to be higher in the 30-μm-thick foils, resulting in a higher Paris constant m than that in the 50-μm-thick foils.",

keywords = "Effective stress intensity factor, Failure analysis, Fatigue crack growth, Tensile loading, Titanium alloys",

author = "Meiqi Yao and Hongyang Wang and Yi Zhao and Jiangbo Sha",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier Ltd",

year = "2018",

month = sep,

doi = "10.1016/j.ijfatigue.2018.05.009",

language = "English",

volume = "114",

pages = "65--73",

journal = "International Journal of Fatigue",

issn = "0142-1123",

publisher = "Elsevier Ltd.",

}

TY - JOUR

T1 - Tension-tension fatigue behaviours of notched freestanding pure Ti foils with different thicknesses

AU - Yao, Meiqi

AU - Wang, Hongyang

AU - Zhao, Yi

AU - Sha, Jiangbo

PY - 2018/9

Y1 - 2018/9

N2 - This work addresses the mode I fatigue crack propagation behaviours of pure Ti foils using freestanding notched rectangular specimens under tension-tension cyclic loading. Compared to the 50-μm-thick foil, the 30-μm-thick foil exhibited a higher yield strength (σy) but a lower fracture toughness (KQ) and fatigue life (Nf) for the same loading conditions. The Paris constant m decreased from 5.12 to 4.45, when the foil thickness increased from 30 μm to 50 μm. The incomplete self-similarity parameter Z at the crack tip was found to be higher in the 30-μm-thick foils, resulting in a higher Paris constant m than that in the 50-μm-thick foils.

AB - This work addresses the mode I fatigue crack propagation behaviours of pure Ti foils using freestanding notched rectangular specimens under tension-tension cyclic loading. Compared to the 50-μm-thick foil, the 30-μm-thick foil exhibited a higher yield strength (σy) but a lower fracture toughness (KQ) and fatigue life (Nf) for the same loading conditions. The Paris constant m decreased from 5.12 to 4.45, when the foil thickness increased from 30 μm to 50 μm. The incomplete self-similarity parameter Z at the crack tip was found to be higher in the 30-μm-thick foils, resulting in a higher Paris constant m than that in the 50-μm-thick foils.

KW - Effective stress intensity factor

KW - Failure analysis

KW - Fatigue crack growth

KW - Tensile loading

KW - Titanium alloys

UR - https://www.scopus.com/pages/publications/85047551637

U2 - 10.1016/j.ijfatigue.2018.05.009

DO - 10.1016/j.ijfatigue.2018.05.009

M3 - Article

AN - SCOPUS:85047551637

SN - 0142-1123

VL - 114

SP - 65

EP - 73

JO - International Journal of Fatigue

JF - International Journal of Fatigue

ER -

Tension-tension fatigue behaviours of notched freestanding pure Ti foils with different thicknesses

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