In-situ experimental and numerical investigation on fatigue crack growth in perfluorosulfonic-acid membrane with overloading effect

Liang Cai; Pilin Song; Ibrahim Elbugdady; Tatsuo Sakai; Wei Li

doi:10.1016/j.engfracmech.2024.110175

In-situ experimental and numerical investigation on fatigue crack growth in perfluorosulfonic-acid membrane with overloading effect

Liang Cai, Pilin Song, Ibrahim Elbugdady, Tatsuo Sakai, Wei Li^*

^*Corresponding author for this work

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

Abstract

Fatigue crack growth behavior of perfluorosulfonic-acid membrane is investigated under single overload conditions by in-situ fatigue testing. The results show that the effected range of overload on cyclic plasticity positively correlates with the overload ratio (R_ol), indicating that overload-induced residual stress is aggravated with increase of R_ol. Besides, crack-tip sharpening occurred at higher R_ol can promote cyclic plasticity deformation, thus initially accelerating the crack growth. Moreover, the cyclic plasticity can be used to interpret the post-overload crack growth. Based on plastically dissipated energy, a numerical scheme incorporated with developed elastic-viscoplastic constitutive relationship is established to predict the fatigue crack growth.

Original language	English
Article number	110175
Journal	Engineering Fracture Mechanics
Volume	305
DOIs	https://doi.org/10.1016/j.engfracmech.2024.110175
Publication status	Published - 8 Jul 2024

Keywords

Constitutive modeling
Cyclic plastic zone
In-situ
Plastically dissipated energy
Single overload

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10.1016/j.engfracmech.2024.110175

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title = "In-situ experimental and numerical investigation on fatigue crack growth in perfluorosulfonic-acid membrane with overloading effect",

abstract = "Fatigue crack growth behavior of perfluorosulfonic-acid membrane is investigated under single overload conditions by in-situ fatigue testing. The results show that the effected range of overload on cyclic plasticity positively correlates with the overload ratio (Rol), indicating that overload-induced residual stress is aggravated with increase of Rol. Besides, crack-tip sharpening occurred at higher Rol can promote cyclic plasticity deformation, thus initially accelerating the crack growth. Moreover, the cyclic plasticity can be used to interpret the post-overload crack growth. Based on plastically dissipated energy, a numerical scheme incorporated with developed elastic-viscoplastic constitutive relationship is established to predict the fatigue crack growth.",

keywords = "Constitutive modeling, Cyclic plastic zone, In-situ, Plastically dissipated energy, Single overload",

author = "Liang Cai and Pilin Song and Ibrahim Elbugdady and Tatsuo Sakai and Wei Li",

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T1 - In-situ experimental and numerical investigation on fatigue crack growth in perfluorosulfonic-acid membrane with overloading effect

AU - Cai, Liang

AU - Song, Pilin

AU - Elbugdady, Ibrahim

AU - Sakai, Tatsuo

AU - Li, Wei

PY - 2024/7/8

Y1 - 2024/7/8

N2 - Fatigue crack growth behavior of perfluorosulfonic-acid membrane is investigated under single overload conditions by in-situ fatigue testing. The results show that the effected range of overload on cyclic plasticity positively correlates with the overload ratio (Rol), indicating that overload-induced residual stress is aggravated with increase of Rol. Besides, crack-tip sharpening occurred at higher Rol can promote cyclic plasticity deformation, thus initially accelerating the crack growth. Moreover, the cyclic plasticity can be used to interpret the post-overload crack growth. Based on plastically dissipated energy, a numerical scheme incorporated with developed elastic-viscoplastic constitutive relationship is established to predict the fatigue crack growth.

AB - Fatigue crack growth behavior of perfluorosulfonic-acid membrane is investigated under single overload conditions by in-situ fatigue testing. The results show that the effected range of overload on cyclic plasticity positively correlates with the overload ratio (Rol), indicating that overload-induced residual stress is aggravated with increase of Rol. Besides, crack-tip sharpening occurred at higher Rol can promote cyclic plasticity deformation, thus initially accelerating the crack growth. Moreover, the cyclic plasticity can be used to interpret the post-overload crack growth. Based on plastically dissipated energy, a numerical scheme incorporated with developed elastic-viscoplastic constitutive relationship is established to predict the fatigue crack growth.

KW - Constitutive modeling

KW - Cyclic plastic zone

KW - In-situ

KW - Plastically dissipated energy

KW - Single overload

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U2 - 10.1016/j.engfracmech.2024.110175

DO - 10.1016/j.engfracmech.2024.110175

M3 - Article

AN - SCOPUS:85194429898

SN - 0013-7944

VL - 305

JO - Engineering Fracture Mechanics

JF - Engineering Fracture Mechanics

M1 - 110175

ER -

In-situ experimental and numerical investigation on fatigue crack growth in perfluorosulfonic-acid membrane with overloading effect

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Keywords

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