Fractal Analysis for Fatigue Crack Growth Rate Response of Engineering Structures with Complex Geometry

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F46747885%3A24620%2F22%3A00010677" target="_blank" >RIV/46747885:24620/22:00010677 - isvavai.cz</a>

Result on the web

<a href="https://www.mdpi.com/2504-3110/6/11/635" target="_blank" >https://www.mdpi.com/2504-3110/6/11/635</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.3390/fractalfract6110635" target="_blank" >10.3390/fractalfract6110635</a>

Result language

angličtina

Original language name

Fractal Analysis for Fatigue Crack Growth Rate Response of Engineering Structures with Complex Geometry

Original language description

A growing fatigue crack in metallic materials and structures exhibits multifractal features that inherit signatures of the crack growth rate behavior of the material. This study exploits the recently established multifractal fatigue crack growth model to quantify the characteristic fatigue crack growth rate response of the AISI 410 martensitic stainless steel using an L-shaped bell crank structure. The objective is to demonstrate that the fatigue crack growth rate response of the material could be established by quantifying the fractality of the growing crack. The fractal approach avoids the need of the crack geometry factor when calculating the crack tip driving force. The fractal analysis of the crack image employs the box-counting algorithm to determine the fractal dimension along the edge of the crack length. The analysis is confined to the power law crack growth rate stage (Paris crack growth regime). Results show that the fatigue crack growth path in the bell crank structure is dictated by the Mode I (opening) component of the crack loading. The distribution of fractal-based fatigue crack growth rate data is within the 99% confidence limit of the median crack growth response by the Paris equation. Thus, the model could be employed for prediction of the fatigue crack growth response of engineering structures where the crack geometry factor is not readily available.

Czech name

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Czech description

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Type

J_imp - Article in a specialist periodical, which is included in the Web of Science database

CEP classification

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OECD FORD branch

10100 - Mathematics

Project

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Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2022

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

FRACTAL AND FRACTIONAL

ISSN

2504-3110

e-ISSN

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Volume of the periodical

6

Issue of the periodical within the volume

11

Country of publishing house

CH - SWITZERLAND

Number of pages

12

Pages from-to

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UT code for WoS article

000882595000001

EID of the result in the Scopus database

2-s2.0-85141798509