Analysis of two-dimensional fatigue crack propagation in thin aluminum plates using the Paris law modified by a closure concept

Marcel Sato; Lucas S. Moura; Andres F. Galvis; Eder L. Albuquerque; Paulo Sollero

doi:10.1016/j.enganabound.2019.06.008

Analysis of two-dimensional fatigue crack propagation in thin aluminum plates using the Paris law modified by a closure concept

Marcel Sato
, Lucas S. Moura
, Andres F. Galvis
, Eder L. Albuquerque
, Paulo Sollero^*

^*Corresponding author for this work

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

Abstract

A general procedure is applied to analyze fatigue crack propagation in isotropic materials under mixed mode conditions, the Paris law modified by a closure concept. The dual boundary element method (DBEM) provides an stress and strain analysis on the solid, with reliable results for the mechanical fields in the region near to the crack tip. For validating purposes, thin plates made of 2024-T3 aluminum alloy are used with two horizontal notches. Throughout the J-Integral the stress intensity factors (SIFs) can be evaluated and with digital image processing, the displacement information from the experimental tests is obtained. Then, the effect of the crack closure during unloading is considered to attain remarkable numerical results compared to those experimentally collected, showing the feasibility of the proposed model.

Original language	English
Pages (from-to)	513-527
Number of pages	15
Journal	Engineering Analysis with Boundary Elements
Volume	106
Early online date	27 Jun 2019
DOIs	https://doi.org/10.1016/j.enganabound.2019.06.008
Publication status	Published - Sept 2019

Keywords

Boundary element method
Closure model
Digital image correlation
Fatigue crack propagation

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10.1016/j.enganabound.2019.06.008

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title = "Analysis of two-dimensional fatigue crack propagation in thin aluminum plates using the Paris law modified by a closure concept",

abstract = "A general procedure is applied to analyze fatigue crack propagation in isotropic materials under mixed mode conditions, the Paris law modified by a closure concept. The dual boundary element method (DBEM) provides an stress and strain analysis on the solid, with reliable results for the mechanical fields in the region near to the crack tip. For validating purposes, thin plates made of 2024-T3 aluminum alloy are used with two horizontal notches. Throughout the J-Integral the stress intensity factors (SIFs) can be evaluated and with digital image processing, the displacement information from the experimental tests is obtained. Then, the effect of the crack closure during unloading is considered to attain remarkable numerical results compared to those experimentally collected, showing the feasibility of the proposed model.",

keywords = "Boundary element method, Closure model, Digital image correlation, Fatigue crack propagation",

author = "Marcel Sato and Moura, \{Lucas S.\} and Galvis, \{Andres F.\} and Albuquerque, \{Eder L.\} and Paulo Sollero",

year = "2019",

month = sep,

doi = "10.1016/j.enganabound.2019.06.008",

language = "English",

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journal = "Engineering Analysis with Boundary Elements",

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T1 - Analysis of two-dimensional fatigue crack propagation in thin aluminum plates using the Paris law modified by a closure concept

AU - Sato, Marcel

AU - Moura, Lucas S.

AU - Galvis, Andres F.

AU - Albuquerque, Eder L.

AU - Sollero, Paulo

PY - 2019/9

Y1 - 2019/9

N2 - A general procedure is applied to analyze fatigue crack propagation in isotropic materials under mixed mode conditions, the Paris law modified by a closure concept. The dual boundary element method (DBEM) provides an stress and strain analysis on the solid, with reliable results for the mechanical fields in the region near to the crack tip. For validating purposes, thin plates made of 2024-T3 aluminum alloy are used with two horizontal notches. Throughout the J-Integral the stress intensity factors (SIFs) can be evaluated and with digital image processing, the displacement information from the experimental tests is obtained. Then, the effect of the crack closure during unloading is considered to attain remarkable numerical results compared to those experimentally collected, showing the feasibility of the proposed model.

AB - A general procedure is applied to analyze fatigue crack propagation in isotropic materials under mixed mode conditions, the Paris law modified by a closure concept. The dual boundary element method (DBEM) provides an stress and strain analysis on the solid, with reliable results for the mechanical fields in the region near to the crack tip. For validating purposes, thin plates made of 2024-T3 aluminum alloy are used with two horizontal notches. Throughout the J-Integral the stress intensity factors (SIFs) can be evaluated and with digital image processing, the displacement information from the experimental tests is obtained. Then, the effect of the crack closure during unloading is considered to attain remarkable numerical results compared to those experimentally collected, showing the feasibility of the proposed model.

KW - Boundary element method

KW - Closure model

KW - Digital image correlation

KW - Fatigue crack propagation

UR - https://www.scopus.com/pages/publications/85068014030

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DO - 10.1016/j.enganabound.2019.06.008

M3 - Article

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SN - 0955-7997

VL - 106

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EP - 527

JO - Engineering Analysis with Boundary Elements

JF - Engineering Analysis with Boundary Elements

ER -

Analysis of two-dimensional fatigue crack propagation in thin aluminum plates using the Paris law modified by a closure concept

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Keywords

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