Effect of split sleeve cold expansion on cracking behaviors of titanium alloy TC4 holes

W. Z. Yan; X. S. Wang; H. S. Gao; Z. F. Yue

doi:10.1016/j.engfracmech.2012.04.008

Effect of split sleeve cold expansion on cracking behaviors of titanium alloy TC4 holes

W. Z. Yan, X. S. Wang, H. S. Gao, Z. F. Yue

School of Mechanics,Civil Engineering and Architecture

Northwestern Polytechnical University Xian

Research output: Contribution to journal › Article › peer-review

67 Scopus citations

Abstract

The effect of split sleeve cold expansion on fatigue behavior of titanium alloy TC4 open hole was investigated by experiment. After cold expansion, fatigue life of titanium alloy TC4 open hole was increased to 1.5-3.0 times. The residual compressive stress drastically retards the crack propagation rate, especially in the short crack stage. Corner crack initiated at the entrance face for cold expanded holes, while face crack initiated at the mid-plane of non-expanded holes. Finite element results showed that the lowest compression stress occurred at the entrance surface, while the largest one occurred near the middle of the hole wall.

Original language	English
Pages (from-to)	79-89
Number of pages	11
Journal	Engineering Fracture Mechanics
Volume	88
DOIs	https://doi.org/10.1016/j.engfracmech.2012.04.008
State	Published - Jul 2012

Keywords

Cold expansion
Crack propagation
Fatigue performance
Finite element

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10.1016/j.engfracmech.2012.04.008

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title = "Effect of split sleeve cold expansion on cracking behaviors of titanium alloy TC4 holes",

abstract = "The effect of split sleeve cold expansion on fatigue behavior of titanium alloy TC4 open hole was investigated by experiment. After cold expansion, fatigue life of titanium alloy TC4 open hole was increased to 1.5-3.0 times. The residual compressive stress drastically retards the crack propagation rate, especially in the short crack stage. Corner crack initiated at the entrance face for cold expanded holes, while face crack initiated at the mid-plane of non-expanded holes. Finite element results showed that the lowest compression stress occurred at the entrance surface, while the largest one occurred near the middle of the hole wall.",

keywords = "Cold expansion, Crack propagation, Fatigue performance, Finite element",

author = "Yan, {W. Z.} and Wang, {X. S.} and Gao, {H. S.} and Yue, {Z. F.}",

year = "2012",

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AU - Yan, W. Z.

AU - Wang, X. S.

AU - Gao, H. S.

AU - Yue, Z. F.

PY - 2012/7

Y1 - 2012/7

N2 - The effect of split sleeve cold expansion on fatigue behavior of titanium alloy TC4 open hole was investigated by experiment. After cold expansion, fatigue life of titanium alloy TC4 open hole was increased to 1.5-3.0 times. The residual compressive stress drastically retards the crack propagation rate, especially in the short crack stage. Corner crack initiated at the entrance face for cold expanded holes, while face crack initiated at the mid-plane of non-expanded holes. Finite element results showed that the lowest compression stress occurred at the entrance surface, while the largest one occurred near the middle of the hole wall.

AB - The effect of split sleeve cold expansion on fatigue behavior of titanium alloy TC4 open hole was investigated by experiment. After cold expansion, fatigue life of titanium alloy TC4 open hole was increased to 1.5-3.0 times. The residual compressive stress drastically retards the crack propagation rate, especially in the short crack stage. Corner crack initiated at the entrance face for cold expanded holes, while face crack initiated at the mid-plane of non-expanded holes. Finite element results showed that the lowest compression stress occurred at the entrance surface, while the largest one occurred near the middle of the hole wall.

KW - Cold expansion

KW - Crack propagation

KW - Fatigue performance

KW - Finite element

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DO - 10.1016/j.engfracmech.2012.04.008

M3 - 文章

AN - SCOPUS:84861187370

SN - 0013-7944

VL - 88

SP - 79

EP - 89

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

ER -

Effect of split sleeve cold expansion on cracking behaviors of titanium alloy TC4 holes

Abstract

Keywords

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